Action not permitted
Modal body text goes here.
Modal Title
Modal Body
CERTFR-2026-AVI-0193
Vulnerability from certfr_avis
De multiples vulnérabilités ont été découvertes dans le noyau Linux de Red Hat. Elles permettent à un attaquant de provoquer un déni de service à distance, une atteinte à l'intégrité des données et un contournement de la politique de sécurité.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
| Vendor | Product | Description | ||
|---|---|---|---|---|
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.4 aarch64 | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux for Power, little endian - 4 years of support 10.0 ppc64le | ||
| Red Hat | Red Hat Enterprise Linux | Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 10.0 s390x | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.6 aarch64 | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.4 aarch64 | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 10.0 s390x | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support 10.0 s390x | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux for x86_64 - Extended Update Support 10.0 x86_64 | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.4 ppc64le | ||
| Red Hat | Red Hat Enterprise Linux | Red Hat Enterprise Linux for Real Time 8 x86_64 | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux Server - AUS 9.6 x86_64 | ||
| Red Hat | Red Hat Enterprise Linux | Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.6 s390x | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support 9.4 aarch64 | ||
| Red Hat | Red Hat Enterprise Linux | Red Hat Enterprise Linux for x86_64 - Extended Update Support 10.0 x86_64 | ||
| Red Hat | Red Hat Enterprise Linux | Red Hat Enterprise Linux for x86_64 - 4 years of updates 10.0 x86_64 | ||
| Red Hat | Red Hat Enterprise Linux Server | Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.4 ppc64le | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.6 x86_64 | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support 10.0 ppc64le | ||
| Red Hat | Red Hat Enterprise Linux Server | Red Hat Enterprise Linux Server - AUS 9.6 x86_64 | ||
| Red Hat | Red Hat Enterprise Linux | Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.4 x86_64 | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.6 ppc64le | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support 9.4 s390x | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux for ARM 64 - Extended Update Support 10.0 aarch64 | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux for ARM 64 - 4 years of updates 10.0 aarch64 | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.4 x86_64 | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux for Real Time 8 x86_64 | ||
| Red Hat | Red Hat Enterprise Linux | Red Hat Enterprise Linux for Power, little endian - 4 years of support 10.0 ppc64le | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support 9.4 ppc64le | ||
| Red Hat | Red Hat Enterprise Linux | Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.6 x86_64 | ||
| Red Hat | Red Hat Enterprise Linux Server | Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.6 ppc64le | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.4 s390x | ||
| Red Hat | Red Hat Enterprise Linux | Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.4 s390x | ||
| Red Hat | Red Hat Enterprise Linux | Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.4 aarch64 | ||
| Red Hat | Red Hat Enterprise Linux | Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.6 aarch64 | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support 9.6 ppc64le | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.6 x86_64 | ||
| Red Hat | Red Hat Enterprise Linux | Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.6 s390x | ||
| Red Hat | Red Hat Enterprise Linux | Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.4 aarch64 | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.6 aarch64 | ||
| Red Hat | Red Hat Enterprise Linux | Red Hat Enterprise Linux for Power, little endian - Extended Update Support 10.0 ppc64le | ||
| Red Hat | Red Hat Enterprise Linux | Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.4 s390x | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support 9.6 s390x | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 10.0 s390x | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.4 ppc64le | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.6 ppc64le | ||
| Red Hat | Red Hat Enterprise Linux | Red Hat Enterprise Linux for Real Time for NFV 8 x86_64 | ||
| Red Hat | Red Hat Enterprise Linux Server | Red Hat Enterprise Linux Server - AUS 9.4 x86_64 | ||
| Red Hat | Red Hat Enterprise Linux | Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.6 aarch64 | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.6 s390x | ||
| Red Hat | Red Hat Enterprise Linux | Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.6 ppc64le | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support 10.0 aarch64 | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux Server - AUS 9.4 x86_64 | ||
| Red Hat | Red Hat Enterprise Linux | Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.6 x86_64 | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux for Power, little endian - Extended Update Support 10.0 ppc64le | ||
| Red Hat | Red Hat Enterprise Linux | Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 10.0 s390x | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux for Real Time for NFV 8 x86_64 | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 10.0 x86_64 | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support 9.6 aarch64 | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 9.6 x86_64 | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.4 s390x | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 9.4 x86_64 | ||
| Red Hat | Red Hat Enterprise Linux | Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.4 ppc64le | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.6 s390x | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.4 x86_64 | ||
| Red Hat | Red Hat Enterprise Linux | Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.4 x86_64 | ||
| Red Hat | Red Hat Enterprise Linux | Red Hat Enterprise Linux for ARM 64 - 4 years of updates 10.0 aarch64 | ||
| Red Hat | Red Hat Enterprise Linux | Red Hat Enterprise Linux for ARM 64 - Extended Update Support 10.0 aarch64 | ||
| Red Hat | Red Hat CodeReady Linux Builder | Red Hat Enterprise Linux for x86_64 - 4 years of updates 10.0 x86_64 |
References
| Title | Publication Time | Tags | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.4 aarch64",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for Power, little endian - 4 years of support 10.0 ppc64le",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 10.0 s390x",
"product": {
"name": "Red Hat Enterprise Linux",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.6 aarch64",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.4 aarch64",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 10.0 s390x",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support 10.0 s390x",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for x86_64 - Extended Update Support 10.0 x86_64",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.4 ppc64le",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for Real Time 8 x86_64",
"product": {
"name": "Red Hat Enterprise Linux",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux Server - AUS 9.6 x86_64",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.6 s390x",
"product": {
"name": "Red Hat Enterprise Linux",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support 9.4 aarch64",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for x86_64 - Extended Update Support 10.0 x86_64",
"product": {
"name": "Red Hat Enterprise Linux",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for x86_64 - 4 years of updates 10.0 x86_64",
"product": {
"name": "Red Hat Enterprise Linux",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.4 ppc64le",
"product": {
"name": "Red Hat Enterprise Linux Server",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.6 x86_64",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support 10.0 ppc64le",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux Server - AUS 9.6 x86_64",
"product": {
"name": "Red Hat Enterprise Linux Server",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.4 x86_64",
"product": {
"name": "Red Hat Enterprise Linux",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.6 ppc64le",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support 9.4 s390x",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for ARM 64 - Extended Update Support 10.0 aarch64",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for ARM 64 - 4 years of updates 10.0 aarch64",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.4 x86_64",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for Real Time 8 x86_64",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for Power, little endian - 4 years of support 10.0 ppc64le",
"product": {
"name": "Red Hat Enterprise Linux",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support 9.4 ppc64le",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.6 x86_64",
"product": {
"name": "Red Hat Enterprise Linux",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.6 ppc64le",
"product": {
"name": "Red Hat Enterprise Linux Server",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.4 s390x",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.4 s390x",
"product": {
"name": "Red Hat Enterprise Linux",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.4 aarch64",
"product": {
"name": "Red Hat Enterprise Linux",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.6 aarch64",
"product": {
"name": "Red Hat Enterprise Linux",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support 9.6 ppc64le",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.6 x86_64",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.6 s390x",
"product": {
"name": "Red Hat Enterprise Linux",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.4 aarch64",
"product": {
"name": "Red Hat Enterprise Linux",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.6 aarch64",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for Power, little endian - Extended Update Support 10.0 ppc64le",
"product": {
"name": "Red Hat Enterprise Linux",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.4 s390x",
"product": {
"name": "Red Hat Enterprise Linux",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support 9.6 s390x",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 10.0 s390x",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.4 ppc64le",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.6 ppc64le",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for Real Time for NFV 8 x86_64",
"product": {
"name": "Red Hat Enterprise Linux",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux Server - AUS 9.4 x86_64",
"product": {
"name": "Red Hat Enterprise Linux Server",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.6 aarch64",
"product": {
"name": "Red Hat Enterprise Linux",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.6 s390x",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.6 ppc64le",
"product": {
"name": "Red Hat Enterprise Linux",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support 10.0 aarch64",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux Server - AUS 9.4 x86_64",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.6 x86_64",
"product": {
"name": "Red Hat Enterprise Linux",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for Power, little endian - Extended Update Support 10.0 ppc64le",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 10.0 s390x",
"product": {
"name": "Red Hat Enterprise Linux",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for Real Time for NFV 8 x86_64",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 10.0 x86_64",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support 9.6 aarch64",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 9.6 x86_64",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.4 s390x",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 9.4 x86_64",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.4 ppc64le",
"product": {
"name": "Red Hat Enterprise Linux",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.6 s390x",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.4 x86_64",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.4 x86_64",
"product": {
"name": "Red Hat Enterprise Linux",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for ARM 64 - 4 years of updates 10.0 aarch64",
"product": {
"name": "Red Hat Enterprise Linux",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for ARM 64 - Extended Update Support 10.0 aarch64",
"product": {
"name": "Red Hat Enterprise Linux",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
},
{
"description": "Red Hat Enterprise Linux for x86_64 - 4 years of updates 10.0 x86_64",
"product": {
"name": "Red Hat CodeReady Linux Builder",
"vendor": {
"name": "Red Hat",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2025-68349",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-68349"
},
{
"name": "CVE-2025-40294",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-40294"
},
{
"name": "CVE-2025-37882",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-37882"
},
{
"name": "CVE-2025-39933",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-39933"
},
{
"name": "CVE-2025-40271",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-40271"
},
{
"name": "CVE-2025-40269",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-40269"
},
{
"name": "CVE-2025-40168",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-40168"
},
{
"name": "CVE-2025-39760",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-39760"
},
{
"name": "CVE-2025-38383",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38383"
},
{
"name": "CVE-2023-53762",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-53762"
},
{
"name": "CVE-2025-38415",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38415"
},
{
"name": "CVE-2025-38349",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38349"
},
{
"name": "CVE-2025-38730",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38730"
},
{
"name": "CVE-2025-38051",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38051"
},
{
"name": "CVE-2025-40304",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-40304"
}
],
"initial_release_date": "2026-02-20T00:00:00",
"last_revision_date": "2026-02-20T00:00:00",
"links": [],
"reference": "CERTFR-2026-AVI-0193",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-02-20T00:00:00.000000"
}
],
"risks": [
{
"description": "D\u00e9ni de service \u00e0 distance"
},
{
"description": "Atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es"
},
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans le noyau Linux de Red Hat. Elles permettent \u00e0 un attaquant de provoquer un d\u00e9ni de service \u00e0 distance, une atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es et un contournement de la politique de s\u00e9curit\u00e9.",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans le noyau Linux de Red Hat",
"vendor_advisories": [
{
"published_at": "2026-02-16",
"title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:2761",
"url": "https://access.redhat.com/errata/RHSA-2026:2761"
},
{
"published_at": "2026-02-16",
"title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:2759",
"url": "https://access.redhat.com/errata/RHSA-2026:2759"
},
{
"published_at": "2026-02-17",
"title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:2821",
"url": "https://access.redhat.com/errata/RHSA-2026:2821"
},
{
"published_at": "2026-02-17",
"title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:2766",
"url": "https://access.redhat.com/errata/RHSA-2026:2766"
}
]
}
CVE-2025-38730 (GCVE-0-2025-38730)
Vulnerability from cvelistv5
Published
2025-09-04 15:33
Modified
2026-10-15 22:02
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
io_uring/net: commit partial buffers on retry
Ring provided buffers are potentially only valid within the single
execution context in which they were acquired. io_uring deals with this
and invalidates them on retry. But on the networking side, if
MSG_WAITALL is set, or if the socket is of the streaming type and too
little was processed, then it will hang on to the buffer rather than
recycle or commit it. This is problematic for two reasons:
1) If someone unregisters the provided buffer ring before a later retry,
then the req->buf_list will no longer be valid.
2) If multiple sockers are using the same buffer group, then multiple
receives can consume the same memory. This can cause data corruption
in the application, as either receive could land in the same
userspace buffer.
Fix this by disallowing partial retries from pinning a provided buffer
across multiple executions, if ring provided buffers are used.
References
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-38730",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-15T21:52:58.598362Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-15T22:02:28.527Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"io_uring/net.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "3b53dc1c641f2884d4750fc25aaf6c36b90db606",
"status": "affected",
"version": "c56e022c0a27142b7b59ae6bdf45f86bf4b298a1",
"versionType": "git"
},
{
"lessThan": "fe9da1812f8697a38f7e30991d568ec199e16059",
"status": "affected",
"version": "c56e022c0a27142b7b59ae6bdf45f86bf4b298a1",
"versionType": "git"
},
{
"lessThan": "21a4ddb0f5e933f372808c10b9ac704505751bb1",
"status": "affected",
"version": "c56e022c0a27142b7b59ae6bdf45f86bf4b298a1",
"versionType": "git"
},
{
"lessThan": "2eb7937b5fc7fcd90eab7bebb0181214b61b9283",
"status": "affected",
"version": "c56e022c0a27142b7b59ae6bdf45f86bf4b298a1",
"versionType": "git"
},
{
"lessThan": "41b70df5b38bc80967d2e0ed55cc3c3896bba781",
"status": "affected",
"version": "c56e022c0a27142b7b59ae6bdf45f86bf4b298a1",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"io_uring/net.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.4"
},
{
"lessThan": "6.4",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.103",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.44",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.15.*",
"status": "unaffected",
"version": "6.15.11",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.16.*",
"status": "unaffected",
"version": "6.16.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.17",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.103",
"versionStartIncluding": "6.4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.44",
"versionStartIncluding": "6.4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.15.11",
"versionStartIncluding": "6.4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.16.2",
"versionStartIncluding": "6.4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.17",
"versionStartIncluding": "6.4",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/net: commit partial buffers on retry\n\nRing provided buffers are potentially only valid within the single\nexecution context in which they were acquired. io_uring deals with this\nand invalidates them on retry. But on the networking side, if\nMSG_WAITALL is set, or if the socket is of the streaming type and too\nlittle was processed, then it will hang on to the buffer rather than\nrecycle or commit it. This is problematic for two reasons:\n\n1) If someone unregisters the provided buffer ring before a later retry,\n then the req-\u003ebuf_list will no longer be valid.\n\n2) If multiple sockers are using the same buffer group, then multiple\n receives can consume the same memory. This can cause data corruption\n in the application, as either receive could land in the same\n userspace buffer.\n\nFix this by disallowing partial retries from pinning a provided buffer\nacross multiple executions, if ring provided buffers are used."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The vulnerability is reached through the io_uring submission/registration syscall interface (`io_uring_setup`, `IORING_REGISTER_PBUF_RING`/`IORING_UNREGISTER_PBUF_RING`, SQE submission), which requires local access to the machine. Per kernel scoring guidance io_uring is a local attack surface, even though the socket data that triggers the partial-transfer state can come from a peer.\nAC:L - The attacker controls every element of the sequence \u2014 it owns both ends of the socket (socketpair or loopback TCP), so it decides exactly when a short `MSG_WAITALL` read occurs and when the remainder is delivered, and it issues the `IORING_UNREGISTER_PBUF_RING` in between. This is deterministic ordering rather than a race, and heap grooming of the freed `io_buffer_list` slot is standard and attacker-influenced.\nPR:L - Only an ordinary unprivileged local user account is needed; creating an io_uring instance, registering/unregistering a provided buffer ring, and creating sockets require no capabilities and no user-namespace tricks. No `CAP_*` check exists anywhere on the path.\nUI:N - The attacking process performs all steps itself within its own io_uring instance and sockets. No victim action or interaction is required.\nS:U - The corruption is of kernel heap memory belonging to the same kernel security authority, giving a classic local privilege escalation. No VM, IOMMU, or other security-authority boundary is crossed.\nC:H - The stale `req-\u003ebuf_list` is dereferenced after `kfree()`, and in the `IOBL_INC` path `bl-\u003ebuf_ring`, `bl-\u003ehead` and `bl-\u003emask` are all read from the reclaimed object and used to dereference an attacker-chosen address, yielding an arbitrary kernel read primitive. Additionally the buffer-aliasing half of the bug leaks one socket\u0027s received data into a buffer owned by another connection.\nI:H - `io_kbuf_commit()` writes `bl-\u003ehead += nr` into freed memory, and `io_kbuf_inc_commit()` performs `buf-\u003elen -= this_len; buf-\u003eaddr += this_len` through a fully attacker-controlled pointer, giving an arbitrary read-modify-write that is readily leveraged into control-flow hijack and root escalation. The bug also silently corrupts application data across sockets sharing a buffer group.\nA:H - Using a freed `struct io_buffer_list` and dereferencing its stale `buf_ring` pointer reliably produces an oops/panic (KASAN use-after-free, wild pointer write), and the attacker can repeat it at will to bring the system down."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T12:04:20.617Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/3b53dc1c641f2884d4750fc25aaf6c36b90db606"
},
{
"url": "https://git.kernel.org/stable/c/fe9da1812f8697a38f7e30991d568ec199e16059"
},
{
"url": "https://git.kernel.org/stable/c/21a4ddb0f5e933f372808c10b9ac704505751bb1"
},
{
"url": "https://git.kernel.org/stable/c/2eb7937b5fc7fcd90eab7bebb0181214b61b9283"
},
{
"url": "https://git.kernel.org/stable/c/41b70df5b38bc80967d2e0ed55cc3c3896bba781"
}
],
"title": "io_uring/net: commit partial buffers on retry",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-38730",
"datePublished": "2025-09-04T15:33:27.691Z",
"dateReserved": "2025-04-16T04:51:24.033Z",
"dateUpdated": "2026-10-15T22:02:28.527Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2025-39933 (GCVE-0-2025-39933)
Vulnerability from cvelistv5
Published
2025-10-04 07:30
Modified
2026-10-21 12:37
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
smb: client: let recv_done verify data_offset, data_length and remaining_data_length
This is inspired by the related server fixes.
References
| URL | Tags | |
|---|---|---|
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-39933",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-10T20:40:59.041091Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-11T18:44:07.641Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/smb/client/smbdirect.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "f23d5c6b7540ec9b1e73a8ea3b2ae9045248d728",
"status": "affected",
"version": "f198186aa9bbd60fae7a2061f4feec614d880299",
"versionType": "git"
},
{
"lessThan": "241e58de23e7c1bbb9bee526c17d9a0f2a90fbad",
"status": "affected",
"version": "f198186aa9bbd60fae7a2061f4feec614d880299",
"versionType": "git"
},
{
"lessThan": "581fb78e0388b78911b0c920e4073737090c8b5f",
"status": "affected",
"version": "f198186aa9bbd60fae7a2061f4feec614d880299",
"versionType": "git"
},
{
"lessThan": "f57e53ea252363234f86674db475839e5b87102e",
"status": "affected",
"version": "f198186aa9bbd60fae7a2061f4feec614d880299",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/smb/client/smbdirect.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.16"
},
{
"lessThan": "4.16",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.16.*",
"status": "unaffected",
"version": "6.16.9",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.17",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.160",
"versionStartIncluding": "4.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.114",
"versionStartIncluding": "4.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.16.9",
"versionStartIncluding": "4.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.17",
"versionStartIncluding": "4.16",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: let recv_done verify data_offset, data_length and remaining_data_length\n\nThis is inspired by the related server fixes."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 9.4,
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:N - The vulnerable code parses `smbdirect_data_transfer` headers received directly from a remote SMB server over RDMA, and iWARP/RoCEv2 are routable over ordinary IP networks (soft-iWARP/soft-RoCE need no special hardware). A malicious, compromised, or spoofed SMB Direct peer reaches `recv_done()` purely over the network.\nAC:L - The attacker writes `data_offset`/`data_length` as plain header fields in a single crafted data-transfer message; there is no race, no memory-layout precondition, and the out-of-bounds read is deterministic and repeatable at an offset of the attacker\u0027s choosing.\nPR:N - `recv_done()` switches to `SMBDIRECT_EXPECT_DATA_TRANSFER` as soon as the unauthenticated transport-level SMBD negotiate completes, so the malformed packet is processed before SMB2 NEGOTIATE/SESSION_SETUP and before any signing or encryption is established \u2014 the peer needs no credentials on the client.\nUI:N - Once an SMB Direct mount exists (including automounts, fstab, DFS referrals, and automatic reconnects), a hostile or compromised server can send the crafted frame at any time and the client processes it automatically in its receive-completion and demultiplex paths. No administrator or user action is required at the moment of attack.\nS:U - The out-of-bounds access, the disclosed data, and the resulting fault are all confined to the client kernel\u0027s own security authority; no hypervisor, IOMMU, or sandbox boundary is crossed.\nC:H - The unvalidated 32-bit `data_offset` makes `copy_to_iter()` read from an attacker-chosen address up to 4 GiB past a ~2 KB receive-buffer slab object, and the inflated `data_length` keeps that buffer at the queue head so `offset` advances on each call \u2014 allowing a remote peer to stream out large amounts of kernel memory, which is then delivered to userspace as SMB response/file content.\nI:L - There is no out-of-bounds write, but the client assembles and parses SMB2 responses built from out-of-bounds kernel memory, so connection state, file metadata, and page-cache contents returned to applications are driven by data the attacker caused the kernel to read from outside the intended buffer.\nA:H - A large `data_offset` faults on unmapped memory or a vmalloc guard page in the demultiplex/softirq path, and an inflated `data_length` desynchronizes `reassembly.data_length` so `_get_first_reassembly()` returns NULL and is immediately dereferenced \u2014 either way an oops (full panic with `panic_on_oops`) that tears down the mount."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T12:37:36.746Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/f23d5c6b7540ec9b1e73a8ea3b2ae9045248d728"
},
{
"url": "https://git.kernel.org/stable/c/241e58de23e7c1bbb9bee526c17d9a0f2a90fbad"
},
{
"url": "https://git.kernel.org/stable/c/581fb78e0388b78911b0c920e4073737090c8b5f"
},
{
"url": "https://git.kernel.org/stable/c/f57e53ea252363234f86674db475839e5b87102e"
}
],
"title": "smb: client: let recv_done verify data_offset, data_length and remaining_data_length",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-39933",
"datePublished": "2025-10-04T07:30:57.496Z",
"dateReserved": "2025-04-16T07:20:57.148Z",
"dateUpdated": "2026-10-21T12:37:36.746Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2025-40168 (GCVE-0-2025-40168)
Vulnerability from cvelistv5
Published
2025-11-12 10:46
Modified
2026-09-02 12:49
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
smc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match().
smc_clc_prfx_match() is called from smc_listen_work() and
not under RCU nor RTNL.
Using sk_dst_get(sk)->dev could trigger UAF.
Let's use __sk_dst_get() and dst_dev_rcu().
Note that the returned value of smc_clc_prfx_match() is not
used in the caller.
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-40168",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-16T19:59:59.004592Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-16T20:00:14.873Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/smc/smc_clc.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "3f119c37aa293af41400cccb3d89fab8dcf774b0",
"status": "affected",
"version": "a046d57da19f812216f393e7c535f5858f793ac3",
"versionType": "git"
},
{
"lessThan": "4f5f52a5842937f945582a93cb9daed9ea526fee",
"status": "affected",
"version": "a046d57da19f812216f393e7c535f5858f793ac3",
"versionType": "git"
},
{
"lessThan": "326e5cf301d0bec0a672aa834d8254c4f9df6255",
"status": "affected",
"version": "a046d57da19f812216f393e7c535f5858f793ac3",
"versionType": "git"
},
{
"lessThan": "d26e80f7fb62d77757b67a1b94e4ac756bc9c658",
"status": "affected",
"version": "a046d57da19f812216f393e7c535f5858f793ac3",
"versionType": "git"
},
{
"lessThan": "235f81045c008169cc4e1955b4a64e118eebe61b",
"status": "affected",
"version": "a046d57da19f812216f393e7c535f5858f793ac3",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/smc/smc_clc.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.11"
},
{
"lessThan": "4.11",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.187",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.156",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.108",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.17.*",
"status": "unaffected",
"version": "6.17.3",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.187",
"versionStartIncluding": "4.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.156",
"versionStartIncluding": "4.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.108",
"versionStartIncluding": "4.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.17.3",
"versionStartIncluding": "4.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18",
"versionStartIncluding": "4.11",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match().\n\nsmc_clc_prfx_match() is called from smc_listen_work() and\nnot under RCU nor RTNL.\n\nUsing sk_dst_get(sk)-\u003edev could trigger UAF.\n\nLet\u0027s use __sk_dst_get() and dst_dev_rcu().\n\nNote that the returned value of smc_clc_prfx_match() is not\nused in the caller."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 8.1,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:N - The vulnerable read is performed by the SMC listen worker while parsing a CLC Proposal message received over TCP from a remote peer (smc_listen_work \u2192 smc_listen_find_device \u2192 smc_listen_prfx_check \u2192 smc_clc_prfx_match), and the peer controls the fields that select and drive the code path. Any host running an AF_SMC listener is exposed to unauthenticated remote connections.\nAC:H - The attacker fully controls one side of the race (when the CLC Proposal arrives and thus when the stale dst-\u003edev is dereferenced), but the other side requires the route\u0027s net_device to be concurrently torn down via dst_dev_put()/free_netdev(), which a remote attacker cannot induce or time.\nPR:N - The CLC handshake is the first exchange on the connection and SMC performs no authentication before smc_clc_prfx_match() runs, so an unauthenticated remote attacker reaches the bug with no credentials of any kind.\nUI:N - Triggering requires only that the attacker complete a TCP handshake with the SMC option and send a CLC Proposal; no action by any local user or administrator is needed.\nS:U - The use-after-free is confined to kernel memory (the net_device slab and the in_dev/inet6_dev structures it points at) within the kernel\u0027s own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The freed net_device is dereferenced and its ifa_list/addr_list walked, and since a reclaimed slab can be groomed with attacker-controlled data this yields an arbitrary kernel-memory read primitive; the match/no-match outcome is additionally returned to the peer as SMC_CLC_DECL_DIFFPREFIX, forming a remotely observable oracle on freed memory contents.\nI:H - A use-after-free of a net_device is a heap-corruption primitive: the reclaimed object\u0027s contents are attacker-influencable via heap spraying and the code follows pointers out of it, which can be groomed into an arbitrary write and control-flow hijack.\nA:H - Dereferencing the freed net_device and walking a bogus in_dev/inet6_dev address list reliably produces a kernel oops, panic, or an unbounded list walk, crashing the system."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-02T12:49:28.040Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/3f119c37aa293af41400cccb3d89fab8dcf774b0"
},
{
"url": "https://git.kernel.org/stable/c/4f5f52a5842937f945582a93cb9daed9ea526fee"
},
{
"url": "https://git.kernel.org/stable/c/326e5cf301d0bec0a672aa834d8254c4f9df6255"
},
{
"url": "https://git.kernel.org/stable/c/d26e80f7fb62d77757b67a1b94e4ac756bc9c658"
},
{
"url": "https://git.kernel.org/stable/c/235f81045c008169cc4e1955b4a64e118eebe61b"
}
],
"title": "smc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match().",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-40168",
"datePublished": "2025-11-12T10:46:51.422Z",
"dateReserved": "2025-04-16T07:20:57.176Z",
"dateUpdated": "2026-09-02T12:49:28.040Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2025-39760 (GCVE-0-2025-39760)
Vulnerability from cvelistv5
Published
2025-09-11 16:52
Modified
2026-06-11 18:44
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
usb: core: config: Prevent OOB read in SS endpoint companion parsing
usb_parse_ss_endpoint_companion() checks descriptor type before length,
enabling a potentially odd read outside of the buffer size.
Fix this up by checking the size first before looking at any of the
fields in the descriptor.
References
| URL | Tags | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8 Version: 842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8 Version: 842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8 Version: 842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8 Version: 842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8 Version: 842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8 Version: 842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8 Version: 842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8 |
||
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2025-11-03T17:43:09.952Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
}
],
"title": "CVE Program Container"
},
{
"affected": [
{
"defaultStatus": "unknown",
"product": "SIMATIC CN 4100",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V5.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-12T12:06:50.172Z",
"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"shortName": "siemens-SADP"
},
"references": [
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-032379.html"
}
],
"x_adpType": "supplier"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-39760",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-10T20:41:07.917785Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-11T18:44:09.050Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/usb/core/config.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "5c3097ede7835d3caf6543eb70ff689af4550cd2",
"status": "affected",
"version": "842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8",
"versionType": "git"
},
{
"lessThan": "058ad2b722812708fe90567875704ae36563e33b",
"status": "affected",
"version": "842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8",
"versionType": "git"
},
{
"lessThan": "b10e0f868067c6f25bbfabdcf3e1e6432c24ca55",
"status": "affected",
"version": "842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8",
"versionType": "git"
},
{
"lessThan": "5badd56c711e2c8371d1670f9bd486697575423c",
"status": "affected",
"version": "842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8",
"versionType": "git"
},
{
"lessThan": "9512510cee7d1becdb0e9413fdd3ab783e4e30ee",
"status": "affected",
"version": "842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8",
"versionType": "git"
},
{
"lessThan": "4fe6f472f0beef4281e6f03bc38a910a33be663f",
"status": "affected",
"version": "842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8",
"versionType": "git"
},
{
"lessThan": "9843bcb187cb933861f7805022e6873905f669e4",
"status": "affected",
"version": "842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8",
"versionType": "git"
},
{
"lessThan": "cf16f408364efd8a68f39011a3b073c83a03612d",
"status": "affected",
"version": "842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/usb/core/config.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.35"
},
{
"lessThan": "2.6.35",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.241",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.190",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.149",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.103",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.43",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.15.*",
"status": "unaffected",
"version": "6.15.11",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.16.*",
"status": "unaffected",
"version": "6.16.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.17",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.241",
"versionStartIncluding": "2.6.35",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.190",
"versionStartIncluding": "2.6.35",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.149",
"versionStartIncluding": "2.6.35",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.103",
"versionStartIncluding": "2.6.35",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.43",
"versionStartIncluding": "2.6.35",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.15.11",
"versionStartIncluding": "2.6.35",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.16.2",
"versionStartIncluding": "2.6.35",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.17",
"versionStartIncluding": "2.6.35",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: core: config: Prevent OOB read in SS endpoint companion parsing\n\nusb_parse_ss_endpoint_companion() checks descriptor type before length,\nenabling a potentially odd read outside of the buffer size.\n\nFix this up by checking the size first before looking at any of the\nfields in the descriptor."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-11T21:35:43.805Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/5c3097ede7835d3caf6543eb70ff689af4550cd2"
},
{
"url": "https://git.kernel.org/stable/c/058ad2b722812708fe90567875704ae36563e33b"
},
{
"url": "https://git.kernel.org/stable/c/b10e0f868067c6f25bbfabdcf3e1e6432c24ca55"
},
{
"url": "https://git.kernel.org/stable/c/5badd56c711e2c8371d1670f9bd486697575423c"
},
{
"url": "https://git.kernel.org/stable/c/9512510cee7d1becdb0e9413fdd3ab783e4e30ee"
},
{
"url": "https://git.kernel.org/stable/c/4fe6f472f0beef4281e6f03bc38a910a33be663f"
},
{
"url": "https://git.kernel.org/stable/c/9843bcb187cb933861f7805022e6873905f669e4"
},
{
"url": "https://git.kernel.org/stable/c/cf16f408364efd8a68f39011a3b073c83a03612d"
}
],
"title": "usb: core: config: Prevent OOB read in SS endpoint companion parsing",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-39760",
"datePublished": "2025-09-11T16:52:29.045Z",
"dateReserved": "2025-04-16T07:20:57.126Z",
"dateUpdated": "2026-06-11T18:44:09.050Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2025-38383 (GCVE-0-2025-38383)
Vulnerability from cvelistv5
Published
2025-07-25 12:53
Modified
2026-05-11 21:26
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
mm/vmalloc: fix data race in show_numa_info()
The following data-race was found in show_numa_info():
==================================================================
BUG: KCSAN: data-race in vmalloc_info_show / vmalloc_info_show
read to 0xffff88800971fe30 of 4 bytes by task 8289 on cpu 0:
show_numa_info mm/vmalloc.c:4936 [inline]
vmalloc_info_show+0x5a8/0x7e0 mm/vmalloc.c:5016
seq_read_iter+0x373/0xb40 fs/seq_file.c:230
proc_reg_read_iter+0x11e/0x170 fs/proc/inode.c:299
....
write to 0xffff88800971fe30 of 4 bytes by task 8287 on cpu 1:
show_numa_info mm/vmalloc.c:4934 [inline]
vmalloc_info_show+0x38f/0x7e0 mm/vmalloc.c:5016
seq_read_iter+0x373/0xb40 fs/seq_file.c:230
proc_reg_read_iter+0x11e/0x170 fs/proc/inode.c:299
....
value changed: 0x0000008f -> 0x00000000
==================================================================
According to this report,there is a read/write data-race because
m->private is accessible to multiple CPUs. To fix this, instead of
allocating the heap in proc_vmalloc_init() and passing the heap address to
m->private, vmalloc_info_show() should allocate the heap.
References
Impacted products
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"mm/vmalloc.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "ead91de35d9cd5c4f80ec51e6020f342079170af",
"status": "affected",
"version": "8e1d743f2c2671aa54f6f91a2b33823f92512870",
"versionType": "git"
},
{
"lessThan": "5c966f447a584ece3c70395898231aeb56256ee7",
"status": "affected",
"version": "8e1d743f2c2671aa54f6f91a2b33823f92512870",
"versionType": "git"
},
{
"lessThan": "5c5f0468d172ddec2e333d738d2a1f85402cf0bc",
"status": "affected",
"version": "8e1d743f2c2671aa54f6f91a2b33823f92512870",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"mm/vmalloc.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.9"
},
{
"lessThan": "6.9",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.37",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.15.*",
"status": "unaffected",
"version": "6.15.6",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.16",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.37",
"versionStartIncluding": "6.9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.15.6",
"versionStartIncluding": "6.9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.16",
"versionStartIncluding": "6.9",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/vmalloc: fix data race in show_numa_info()\n\nThe following data-race was found in show_numa_info():\n\n==================================================================\nBUG: KCSAN: data-race in vmalloc_info_show / vmalloc_info_show\n\nread to 0xffff88800971fe30 of 4 bytes by task 8289 on cpu 0:\n show_numa_info mm/vmalloc.c:4936 [inline]\n vmalloc_info_show+0x5a8/0x7e0 mm/vmalloc.c:5016\n seq_read_iter+0x373/0xb40 fs/seq_file.c:230\n proc_reg_read_iter+0x11e/0x170 fs/proc/inode.c:299\n....\n\nwrite to 0xffff88800971fe30 of 4 bytes by task 8287 on cpu 1:\n show_numa_info mm/vmalloc.c:4934 [inline]\n vmalloc_info_show+0x38f/0x7e0 mm/vmalloc.c:5016\n seq_read_iter+0x373/0xb40 fs/seq_file.c:230\n proc_reg_read_iter+0x11e/0x170 fs/proc/inode.c:299\n....\n\nvalue changed: 0x0000008f -\u003e 0x00000000\n==================================================================\n\nAccording to this report,there is a read/write data-race because\nm-\u003eprivate is accessible to multiple CPUs. To fix this, instead of\nallocating the heap in proc_vmalloc_init() and passing the heap address to\nm-\u003eprivate, vmalloc_info_show() should allocate the heap."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-11T21:26:54.489Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/ead91de35d9cd5c4f80ec51e6020f342079170af"
},
{
"url": "https://git.kernel.org/stable/c/5c966f447a584ece3c70395898231aeb56256ee7"
},
{
"url": "https://git.kernel.org/stable/c/5c5f0468d172ddec2e333d738d2a1f85402cf0bc"
}
],
"title": "mm/vmalloc: fix data race in show_numa_info()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-38383",
"datePublished": "2025-07-25T12:53:24.578Z",
"dateReserved": "2025-04-16T04:51:24.010Z",
"dateUpdated": "2026-05-11T21:26:54.489Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2025-68349 (GCVE-0-2025-68349)
Vulnerability from cvelistv5
Published
2025-12-24 10:32
Modified
2026-10-15 01:09
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
NFSv4/pNFS: Clear NFS_INO_LAYOUTCOMMIT in pnfs_mark_layout_stateid_invalid
Fixes a crash when layout is null during this call stack:
write_inode
-> nfs4_write_inode
-> pnfs_layoutcommit_inode
pnfs_set_layoutcommit relies on the lseg refcount to keep the layout
around. Need to clear NFS_INO_LAYOUTCOMMIT otherwise we might attempt
to reference a null layout.
References
| URL | Tags | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: fe1cf9469d7bcb6af27e42eb555a41b0135bce4a Version: fe1cf9469d7bcb6af27e42eb555a41b0135bce4a Version: fe1cf9469d7bcb6af27e42eb555a41b0135bce4a Version: fe1cf9469d7bcb6af27e42eb555a41b0135bce4a Version: fe1cf9469d7bcb6af27e42eb555a41b0135bce4a Version: fe1cf9469d7bcb6af27e42eb555a41b0135bce4a Version: fe1cf9469d7bcb6af27e42eb555a41b0135bce4a Version: fe1cf9469d7bcb6af27e42eb555a41b0135bce4a |
||
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-68349",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-16T19:27:27.700810Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-16T19:27:54.246Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"affected": [
{
"defaultStatus": "unknown",
"product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "V3.1.6",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "V3.1.7",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "V3.1.6",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "V3.1.7",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "V3.1.6",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "V3.1.7",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "V3.1.6",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "V3.1.7",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "V3.1.6",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "V3.1.7",
"versionType": "custom"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-15T01:09:54.275Z",
"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"shortName": "siemens-SADP"
},
"references": [
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"
},
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-457936.html"
}
],
"x_adpType": "supplier"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/nfs/pnfs.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "084bebe82ad86f718a3af84f34761863e63164ed",
"status": "affected",
"version": "fe1cf9469d7bcb6af27e42eb555a41b0135bce4a",
"versionType": "git"
},
{
"lessThan": "b6e4e3a08c03200cc4b8067ec8ab3172a989d6fc",
"status": "affected",
"version": "fe1cf9469d7bcb6af27e42eb555a41b0135bce4a",
"versionType": "git"
},
{
"lessThan": "104080582ae0aa6dce6c6d75ff89062efe84673b",
"status": "affected",
"version": "fe1cf9469d7bcb6af27e42eb555a41b0135bce4a",
"versionType": "git"
},
{
"lessThan": "f718f9ea6094843b8c059b073af49ad61e9f49bb",
"status": "affected",
"version": "fe1cf9469d7bcb6af27e42eb555a41b0135bce4a",
"versionType": "git"
},
{
"lessThan": "59947dff0fb7c19c09ce6dccbcd253fd542b6c25",
"status": "affected",
"version": "fe1cf9469d7bcb6af27e42eb555a41b0135bce4a",
"versionType": "git"
},
{
"lessThan": "ca2e7fdad7c683b64821c94a58b9b68733214dad",
"status": "affected",
"version": "fe1cf9469d7bcb6af27e42eb555a41b0135bce4a",
"versionType": "git"
},
{
"lessThan": "38694f9aae00459ab443a7dc8b3949a6b33b560a",
"status": "affected",
"version": "fe1cf9469d7bcb6af27e42eb555a41b0135bce4a",
"versionType": "git"
},
{
"lessThan": "e0f8058f2cb56de0b7572f51cd563ca5debce746",
"status": "affected",
"version": "fe1cf9469d7bcb6af27e42eb555a41b0135bce4a",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/nfs/pnfs.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.10"
},
{
"lessThan": "4.10",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.248",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.198",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.160",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.120",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.63",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.17.*",
"status": "unaffected",
"version": "6.17.13",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.248",
"versionStartIncluding": "4.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.198",
"versionStartIncluding": "4.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.160",
"versionStartIncluding": "4.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.120",
"versionStartIncluding": "4.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.63",
"versionStartIncluding": "4.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.17.13",
"versionStartIncluding": "4.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.2",
"versionStartIncluding": "4.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.19",
"versionStartIncluding": "4.10",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSv4/pNFS: Clear NFS_INO_LAYOUTCOMMIT in pnfs_mark_layout_stateid_invalid\n\nFixes a crash when layout is null during this call stack:\n\nwrite_inode\n -\u003e nfs4_write_inode\n -\u003e pnfs_layoutcommit_inode\n\npnfs_set_layoutcommit relies on the lseg refcount to keep the layout\naround. Need to clear NFS_INO_LAYOUTCOMMIT otherwise we might attempt\nto reference a null layout."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.5,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:N - The NFSv4.1+ pNFS client state is driven by network replies from its metadata and data servers; a malicious or compromised pNFS server can return layout-state errors that lead to the client crash.\nAC:L - The server controls layout ranges, data-server replies, and stateid-error timing, allowing it to establish a pending layoutcommit and then invalidate the last layout segment without relying on an uncontrollable race.\nPR:N - The attacker needs no account or capability on the client; CAP_SYS_ADMIN is required only for the victim\u0027s initial NFS mount, and ordinary deployments may use unauthenticated AUTH_SYS server communication.\nUI:N - In a pre-mounted pNFS or NFS-root deployment, automated writes and kernel writeback can complete the trigger sequence without human action at exploitation time.\nS:U - The resulting failure affects the NFS client kernel within its existing security authority and does not cross a virtualization, sandbox, or IOMMU boundary.\nC:N - The stale flag causes a direct NULL dereference of the absent layout rather than an out-of-bounds read, use-after-free access, or information-disclosure primitive.\nI:N - The defect does not provide an attacker-controlled write or corrupt adjacent memory; execution faults while attempting to traverse the layout segment list through a NULL layout pointer.\nA:H - The NULL dereference occurs in kernel writeback and can produce an oops or panic, taking the client system or critical kernel functionality out of service."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T12:10:59.666Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/084bebe82ad86f718a3af84f34761863e63164ed"
},
{
"url": "https://git.kernel.org/stable/c/b6e4e3a08c03200cc4b8067ec8ab3172a989d6fc"
},
{
"url": "https://git.kernel.org/stable/c/104080582ae0aa6dce6c6d75ff89062efe84673b"
},
{
"url": "https://git.kernel.org/stable/c/f718f9ea6094843b8c059b073af49ad61e9f49bb"
},
{
"url": "https://git.kernel.org/stable/c/59947dff0fb7c19c09ce6dccbcd253fd542b6c25"
},
{
"url": "https://git.kernel.org/stable/c/ca2e7fdad7c683b64821c94a58b9b68733214dad"
},
{
"url": "https://git.kernel.org/stable/c/38694f9aae00459ab443a7dc8b3949a6b33b560a"
},
{
"url": "https://git.kernel.org/stable/c/e0f8058f2cb56de0b7572f51cd563ca5debce746"
}
],
"title": "NFSv4/pNFS: Clear NFS_INO_LAYOUTCOMMIT in pnfs_mark_layout_stateid_invalid",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-68349",
"datePublished": "2025-12-24T10:32:41.253Z",
"dateReserved": "2025-12-16T14:48:05.300Z",
"dateUpdated": "2026-10-15T01:09:54.275Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2025-38349 (GCVE-0-2025-38349)
Vulnerability from cvelistv5
Published
2025-07-18 07:53
Modified
2026-10-03 10:55
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
eventpoll: don't decrement ep refcount while still holding the ep mutex
Jann Horn points out that epoll is decrementing the ep refcount and then
doing a
mutex_unlock(&ep->mtx);
afterwards. That's very wrong, because it can lead to a use-after-free.
That pattern is actually fine for the very last reference, because the
code in question will delay the actual call to "ep_free(ep)" until after
it has unlocked the mutex.
But it's wrong for the much subtler "next to last" case when somebody
*else* may also be dropping their reference and free the ep while we're
still using the mutex.
Note that this is true even if that other user is also using the same ep
mutex: mutexes, unlike spinlocks, can not be used for object ownership,
even if they guarantee mutual exclusion.
A mutex "unlock" operation is not atomic, and as one user is still
accessing the mutex as part of unlocking it, another user can come in
and get the now released mutex and free the data structure while the
first user is still cleaning up.
See our mutex documentation in Documentation/locking/mutex-design.rst,
in particular the section [1] about semantics:
"mutex_unlock() may access the mutex structure even after it has
internally released the lock already - so it's not safe for
another context to acquire the mutex and assume that the
mutex_unlock() context is not using the structure anymore"
So if we drop our ep ref before the mutex unlock, but we weren't the
last one, we may then unlock the mutex, another user comes in, drops
_their_ reference and releases the 'ep' as it now has no users - all
while the mutex_unlock() is still accessing it.
Fix this by simply moving the ep refcount dropping to outside the mutex:
the refcount itself is atomic, and doesn't need mutex protection (that's
the whole _point_ of refcounts: unlike mutexes, they are inherently
about object lifetimes).
References
| URL | Tags | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: f2451def095c1743adcfcb0cb5dadc86034e162a Version: a1f93804449d13f97dabd4b996817de4bf1ed67a Version: 58c9b016e12855286370dfb704c08498edbc857a Version: 58c9b016e12855286370dfb704c08498edbc857a Version: 58c9b016e12855286370dfb704c08498edbc857a Version: 58c9b016e12855286370dfb704c08498edbc857a Version: 5.15.209 ≤ Version: 6.1.175 ≤ |
||
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-38349",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-10T20:41:09.643913Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-11T18:44:09.366Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/eventpoll.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "263f5de8302a6f2f136d392e5d3f8b1edf922857",
"status": "affected",
"version": "f2451def095c1743adcfcb0cb5dadc86034e162a",
"versionType": "git"
},
{
"lessThan": "b0821ec902d39062356cb644c16e17a705d1c9f5",
"status": "affected",
"version": "a1f93804449d13f97dabd4b996817de4bf1ed67a",
"versionType": "git"
},
{
"lessThan": "521e9ff0b67c66a17d6f9593dfccafaa984aae4c",
"status": "affected",
"version": "58c9b016e12855286370dfb704c08498edbc857a",
"versionType": "git"
},
{
"lessThan": "6dee745bd0aec9d399df674256e7b1ecdb615444",
"status": "affected",
"version": "58c9b016e12855286370dfb704c08498edbc857a",
"versionType": "git"
},
{
"lessThan": "605c18698ecfa99165f36b7f59d3ed503e169814",
"status": "affected",
"version": "58c9b016e12855286370dfb704c08498edbc857a",
"versionType": "git"
},
{
"lessThan": "8c2e52ebbe885c7eeaabd3b7ddcdc1246fc400d2",
"status": "affected",
"version": "58c9b016e12855286370dfb704c08498edbc857a",
"versionType": "git"
},
{
"lessThan": "5.15.222",
"status": "affected",
"version": "5.15.209",
"versionType": "semver"
},
{
"lessThan": "6.1.178",
"status": "affected",
"version": "6.1.175",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/eventpoll.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.4"
},
{
"lessThan": "6.4",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.222",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.178",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.99",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.39",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.15.*",
"status": "unaffected",
"version": "6.15.7",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.16",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.222",
"versionStartIncluding": "5.15.209",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.178",
"versionStartIncluding": "6.1.175",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.99",
"versionStartIncluding": "6.4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.39",
"versionStartIncluding": "6.4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.15.7",
"versionStartIncluding": "6.4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.16",
"versionStartIncluding": "6.4",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\neventpoll: don\u0027t decrement ep refcount while still holding the ep mutex\n\nJann Horn points out that epoll is decrementing the ep refcount and then\ndoing a\n\n mutex_unlock(\u0026ep-\u003emtx);\n\nafterwards. That\u0027s very wrong, because it can lead to a use-after-free.\n\nThat pattern is actually fine for the very last reference, because the\ncode in question will delay the actual call to \"ep_free(ep)\" until after\nit has unlocked the mutex.\n\nBut it\u0027s wrong for the much subtler \"next to last\" case when somebody\n*else* may also be dropping their reference and free the ep while we\u0027re\nstill using the mutex.\n\nNote that this is true even if that other user is also using the same ep\nmutex: mutexes, unlike spinlocks, can not be used for object ownership,\neven if they guarantee mutual exclusion.\n\nA mutex \"unlock\" operation is not atomic, and as one user is still\naccessing the mutex as part of unlocking it, another user can come in\nand get the now released mutex and free the data structure while the\nfirst user is still cleaning up.\n\nSee our mutex documentation in Documentation/locking/mutex-design.rst,\nin particular the section [1] about semantics:\n\n\t\"mutex_unlock() may access the mutex structure even after it has\n\t internally released the lock already - so it\u0027s not safe for\n\t another context to acquire the mutex and assume that the\n\t mutex_unlock() context is not using the structure anymore\"\n\nSo if we drop our ep ref before the mutex unlock, but we weren\u0027t the\nlast one, we may then unlock the mutex, another user comes in, drops\n_their_ reference and releases the \u0027ep\u0027 as it now has no users - all\nwhile the mutex_unlock() is still accessing it.\n\nFix this by simply moving the ep refcount dropping to outside the mutex:\nthe refcount itself is atomic, and doesn\u0027t need mutex protection (that\u0027s\nthe whole _point_ of refcounts: unlike mutexes, they are inherently\nabout object lifetimes)."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The vulnerability is reached purely through local syscalls \u2014 `epoll_create1()`/`epoll_ctl()` to build the epoll set and concurrent `close()` calls to trigger the release paths. No remote or adjacent network input is involved.\nAC:L - The attacker creates and controls both sides of the race, closing the epoll fd in one thread while closing a monitored file in another (pinnable to separate CPUs), and a lost attempt is completely benign so the race can be retried indefinitely until won.\nPR:L - Only the ability to issue ordinary syscalls as any unprivileged user is required; epoll needs no capability and is permitted even inside restrictive seccomp sandboxes and containers.\nUI:N - The attacker performs every step itself in its own threads; no victim action, mount, or file open by another user is needed.\nS:U - The corrupted `struct eventpoll` and the resulting compromise are both within the kernel of the same system, the standard local privilege-escalation scope.\nC:H - The use-after-free on a `kmalloc-256` object lets the attacker reclaim the freed `eventpoll` with a chosen object and have the racing `mutex_unlock()` dereference attacker-controlled `wait_list`/`owner` fields, yielding a read primitive usable for arbitrary kernel memory disclosure.\nI:H - The in-flight `mutex_unlock()` performs spinlock and list writes into the freed-and-reallocated object and feeds an attacker-controlled `next-\u003etask` pointer into `wake_q_add()`/`try_to_wake_up()`, giving write and control-flow-hijack primitives suitable for privilege escalation.\nA:H - Even unweaponized, the use-after-free on `ep-\u003emtx` corrupts slab memory and reliably produces a kernel oops/panic, and it can be triggered repeatedly by any local user."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-03T10:55:26.241Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/263f5de8302a6f2f136d392e5d3f8b1edf922857"
},
{
"url": "https://git.kernel.org/stable/c/b0821ec902d39062356cb644c16e17a705d1c9f5"
},
{
"url": "https://git.kernel.org/stable/c/521e9ff0b67c66a17d6f9593dfccafaa984aae4c"
},
{
"url": "https://git.kernel.org/stable/c/6dee745bd0aec9d399df674256e7b1ecdb615444"
},
{
"url": "https://git.kernel.org/stable/c/605c18698ecfa99165f36b7f59d3ed503e169814"
},
{
"url": "https://git.kernel.org/stable/c/8c2e52ebbe885c7eeaabd3b7ddcdc1246fc400d2"
},
{
"url": "https://project-zero.issues.chromium.org/issues/430541637"
}
],
"title": "eventpoll: don\u0027t decrement ep refcount while still holding the ep mutex",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-38349",
"datePublished": "2025-07-18T07:53:16.434Z",
"dateReserved": "2025-04-16T04:51:24.006Z",
"dateUpdated": "2026-10-03T10:55:26.241Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2025-37882 (GCVE-0-2025-37882)
Vulnerability from cvelistv5
Published
2025-05-09 06:45
Modified
2026-10-15 21:52
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
usb: xhci: Fix isochronous Ring Underrun/Overrun event handling
The TRB pointer of these events points at enqueue at the time of error
occurrence on xHCI 1.1+ HCs or it's NULL on older ones. By the time we
are handling the event, a new TD may be queued at this ring position.
I can trigger this race by rising interrupt moderation to increase IRQ
handling delay. Similar delay may occur naturally due to system load.
If this ever happens after a Missed Service Error, missed TDs will be
skipped and the new TD processed as if it matched the event. It could
be given back prematurely, risking data loss or buffer UAF by the xHC.
Don't complete TDs on xrun events and don't warn if queued TDs don't
match the event's TRB pointer, which can be NULL or a link/no-op TRB.
Don't warn if there are no queued TDs at all.
Now that it's safe, also handle xrun events if the skip flag is clear.
This ensures completion of any TD stuck in 'error mid TD' state right
before the xrun event, which could happen if a driver submits a finite
number of URBs to a buggy HC and then an error occurs on the last TD.
References
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-37882",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-15T21:45:43.370458Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-15T21:52:02.238Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/usb/host/xhci-ring.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "16a7a8e6c47fea5c847beb696c8c21a7a44c1915",
"status": "affected",
"version": "608b973b70f87e9a9bafbfdfa16aab68507aef45",
"versionType": "git"
},
{
"lessThan": "39a080a2925c81b0f1da0add44722ef2b78e5454",
"status": "affected",
"version": "608b973b70f87e9a9bafbfdfa16aab68507aef45",
"versionType": "git"
},
{
"lessThan": "906dec15b9b321b546fd31a3c99ffc13724c7af4",
"status": "affected",
"version": "608b973b70f87e9a9bafbfdfa16aab68507aef45",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/usb/host/xhci-ring.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.10"
},
{
"lessThan": "6.10",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.26",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.14.*",
"status": "unaffected",
"version": "6.14.5",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.15",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.26",
"versionStartIncluding": "6.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.14.5",
"versionStartIncluding": "6.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.15",
"versionStartIncluding": "6.10",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: xhci: Fix isochronous Ring Underrun/Overrun event handling\n\nThe TRB pointer of these events points at enqueue at the time of error\noccurrence on xHCI 1.1+ HCs or it\u0027s NULL on older ones. By the time we\nare handling the event, a new TD may be queued at this ring position.\n\nI can trigger this race by rising interrupt moderation to increase IRQ\nhandling delay. Similar delay may occur naturally due to system load.\n\nIf this ever happens after a Missed Service Error, missed TDs will be\nskipped and the new TD processed as if it matched the event. It could\nbe given back prematurely, risking data loss or buffer UAF by the xHC.\n\nDon\u0027t complete TDs on xrun events and don\u0027t warn if queued TDs don\u0027t\nmatch the event\u0027s TRB pointer, which can be NULL or a link/no-op TRB.\nDon\u0027t warn if there are no queued TDs at all.\n\nNow that it\u0027s safe, also handle xrun events if the skip flag is clear.\nThis ensures completion of any TD stuck in \u0027error mid TD\u0027 state right\nbefore the xrun event, which could happen if a driver submits a finite\nnumber of URBs to a buggy HC and then an error occurs on the last TD."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The race is in the xHCI host controller interrupt handler and is driven by isochronous URB traffic that a local user can generate through already-attached isoc devices (built-in UVC webcam, USB audio codec) via V4L2/ALSA/usbfs \u2014 no device insertion or physical access is needed.\nAC:L - The attacker controls both sides of the race: ring underruns are caused by starving the isoc ring (attacker-paced URB submission), while the IRQ-processing delay and Missed Service Errors are induced by attacker-generated CPU and USB bandwidth load, and the sequence can be retried continuously at stream rate until it lands.\nPR:L - Only an ordinary unprivileged local account is needed, since logind/udev ACLs routinely grant the active seat user access to /dev/video*, /dev/snd/pcm* and /dev/bus/usb, all of which submit isochronous transfers to xHCI.\nUI:N - The attacker performs all steps themselves by opening the isoc endpoint and driving the transfer pattern; no action by any other user is required.\nS:U - The corruption occurs in kernel memory managed by the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The prematurely completed URB\u0027s buffer is DMA-unmapped and freed while the xHC still owns the TRBs, so freed kernel heap contents are transmitted to the USB device on OUT endpoints and the freed object can be reallocated and read back, giving an arbitrary kernel-memory disclosure primitive.\nI:H - The host controller continues DMA-writing device-supplied data into the freed/unmapped buffer, producing an attacker-influenced write into reallocated kernel heap memory \u2014 a use-after-free write primitive usable for control-flow hijack, on top of silent data corruption of the isoc stream.\nA:H - DMA into freed memory and the resulting software/hardware ring dequeue-pointer desync cause heap corruption, IOMMU faults, \"HC is busted\" error paths and controller resets, readily crashing or hanging the system."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T11:58:01.446Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/16a7a8e6c47fea5c847beb696c8c21a7a44c1915"
},
{
"url": "https://git.kernel.org/stable/c/39a080a2925c81b0f1da0add44722ef2b78e5454"
},
{
"url": "https://git.kernel.org/stable/c/906dec15b9b321b546fd31a3c99ffc13724c7af4"
}
],
"title": "usb: xhci: Fix isochronous Ring Underrun/Overrun event handling",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-37882",
"datePublished": "2025-05-09T06:45:45.936Z",
"dateReserved": "2025-04-16T04:51:23.962Z",
"dateUpdated": "2026-10-15T21:52:02.238Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2025-38051 (GCVE-0-2025-38051)
Vulnerability from cvelistv5
Published
2025-06-18 09:33
Modified
2026-08-05 11:59
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
smb: client: Fix use-after-free in cifs_fill_dirent
There is a race condition in the readdir concurrency process, which may
access the rsp buffer after it has been released, triggering the
following KASAN warning.
==================================================================
BUG: KASAN: slab-use-after-free in cifs_fill_dirent+0xb03/0xb60 [cifs]
Read of size 4 at addr ffff8880099b819c by task a.out/342975
CPU: 2 UID: 0 PID: 342975 Comm: a.out Not tainted 6.15.0-rc6+ #240 PREEMPT(full)
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.1-2.fc37 04/01/2014
Call Trace:
<TASK>
dump_stack_lvl+0x53/0x70
print_report+0xce/0x640
kasan_report+0xb8/0xf0
cifs_fill_dirent+0xb03/0xb60 [cifs]
cifs_readdir+0x12cb/0x3190 [cifs]
iterate_dir+0x1a1/0x520
__x64_sys_getdents+0x134/0x220
do_syscall_64+0x4b/0x110
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f996f64b9f9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89
f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01
f0 ff ff 0d f7 c3 0c 00 f7 d8 64 89 8
RSP: 002b:00007f996f53de78 EFLAGS: 00000207 ORIG_RAX: 000000000000004e
RAX: ffffffffffffffda RBX: 00007f996f53ecdc RCX: 00007f996f64b9f9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f996f53dea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000207 R12: ffffffffffffff88
R13: 0000000000000000 R14: 00007ffc8cd9a500 R15: 00007f996f51e000
</TASK>
Allocated by task 408:
kasan_save_stack+0x20/0x40
kasan_save_track+0x14/0x30
__kasan_slab_alloc+0x6e/0x70
kmem_cache_alloc_noprof+0x117/0x3d0
mempool_alloc_noprof+0xf2/0x2c0
cifs_buf_get+0x36/0x80 [cifs]
allocate_buffers+0x1d2/0x330 [cifs]
cifs_demultiplex_thread+0x22b/0x2690 [cifs]
kthread+0x394/0x720
ret_from_fork+0x34/0x70
ret_from_fork_asm+0x1a/0x30
Freed by task 342979:
kasan_save_stack+0x20/0x40
kasan_save_track+0x14/0x30
kasan_save_free_info+0x3b/0x60
__kasan_slab_free+0x37/0x50
kmem_cache_free+0x2b8/0x500
cifs_buf_release+0x3c/0x70 [cifs]
cifs_readdir+0x1c97/0x3190 [cifs]
iterate_dir+0x1a1/0x520
__x64_sys_getdents64+0x134/0x220
do_syscall_64+0x4b/0x110
entry_SYSCALL_64_after_hwframe+0x76/0x7e
The buggy address belongs to the object at ffff8880099b8000
which belongs to the cache cifs_request of size 16588
The buggy address is located 412 bytes inside of
freed 16588-byte region [ffff8880099b8000, ffff8880099bc0cc)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x99b8
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
anon flags: 0x80000000000040(head|node=0|zone=1)
page_type: f5(slab)
raw: 0080000000000040 ffff888001e03400 0000000000000000 dead000000000001
raw: 0000000000000000 0000000000010001 00000000f5000000 0000000000000000
head: 0080000000000040 ffff888001e03400 0000000000000000 dead000000000001
head: 0000000000000000 0000000000010001 00000000f5000000 0000000000000000
head: 0080000000000003 ffffea0000266e01 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff8880099b8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880099b8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880099b8180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880099b8200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880099b8280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
POC is available in the link [1].
The problem triggering process is as follows:
Process 1 Process 2
-----------------------------------
---truncated---
References
| URL | Tags | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: a364bc0b37f14ffd66c1f982af42990a9d77fa43 Version: a364bc0b37f14ffd66c1f982af42990a9d77fa43 Version: a364bc0b37f14ffd66c1f982af42990a9d77fa43 Version: a364bc0b37f14ffd66c1f982af42990a9d77fa43 Version: a364bc0b37f14ffd66c1f982af42990a9d77fa43 Version: a364bc0b37f14ffd66c1f982af42990a9d77fa43 Version: a364bc0b37f14ffd66c1f982af42990a9d77fa43 Version: a364bc0b37f14ffd66c1f982af42990a9d77fa43 Version: 0f3da51e7046e2eb28992ba65c22d058f571356c Version: 2.6.27.4 ≤ |
||
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2025-11-03T17:33:23.156Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-38051",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-10T20:41:50.583980Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-11T18:44:16.726Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/smb/client/readdir.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "aee067e88d61eb72e966f094e4749c6b14e7008f",
"status": "affected",
"version": "a364bc0b37f14ffd66c1f982af42990a9d77fa43",
"versionType": "git"
},
{
"lessThan": "a24c2f05ac3c5b0aaa539d9d913826d2643dfd0e",
"status": "affected",
"version": "a364bc0b37f14ffd66c1f982af42990a9d77fa43",
"versionType": "git"
},
{
"lessThan": "1b197931fbc821bc7e9e91bf619400db563e3338",
"status": "affected",
"version": "a364bc0b37f14ffd66c1f982af42990a9d77fa43",
"versionType": "git"
},
{
"lessThan": "c8623231e0edfcccb7cc6add0288fa0f0594282f",
"status": "affected",
"version": "a364bc0b37f14ffd66c1f982af42990a9d77fa43",
"versionType": "git"
},
{
"lessThan": "73cadde98f67f76c5eba00ac0b72c453383cec8b",
"status": "affected",
"version": "a364bc0b37f14ffd66c1f982af42990a9d77fa43",
"versionType": "git"
},
{
"lessThan": "9bea368648ac46f8593a780760362e40291d22a9",
"status": "affected",
"version": "a364bc0b37f14ffd66c1f982af42990a9d77fa43",
"versionType": "git"
},
{
"lessThan": "9c9aafbacc183598f064902365e107b5e856531f",
"status": "affected",
"version": "a364bc0b37f14ffd66c1f982af42990a9d77fa43",
"versionType": "git"
},
{
"lessThan": "a7a8fe56e932a36f43e031b398aef92341bf5ea0",
"status": "affected",
"version": "a364bc0b37f14ffd66c1f982af42990a9d77fa43",
"versionType": "git"
},
{
"status": "affected",
"version": "0f3da51e7046e2eb28992ba65c22d058f571356c",
"versionType": "git"
},
{
"lessThan": "2.6.28",
"status": "affected",
"version": "2.6.27.4",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/smb/client/readdir.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.28"
},
{
"lessThan": "2.6.28",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.294",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.238",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.185",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.141",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.93",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.31",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.14.*",
"status": "unaffected",
"version": "6.14.9",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.15",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.4.294",
"versionStartIncluding": "2.6.28",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.238",
"versionStartIncluding": "2.6.28",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.185",
"versionStartIncluding": "2.6.28",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.141",
"versionStartIncluding": "2.6.28",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.93",
"versionStartIncluding": "2.6.28",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.31",
"versionStartIncluding": "2.6.28",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.14.9",
"versionStartIncluding": "2.6.28",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.15",
"versionStartIncluding": "2.6.28",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.27.4",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: Fix use-after-free in cifs_fill_dirent\n\nThere is a race condition in the readdir concurrency process, which may\naccess the rsp buffer after it has been released, triggering the\nfollowing KASAN warning.\n\n ==================================================================\n BUG: KASAN: slab-use-after-free in cifs_fill_dirent+0xb03/0xb60 [cifs]\n Read of size 4 at addr ffff8880099b819c by task a.out/342975\n\n CPU: 2 UID: 0 PID: 342975 Comm: a.out Not tainted 6.15.0-rc6+ #240 PREEMPT(full)\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.1-2.fc37 04/01/2014\n Call Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x53/0x70\n print_report+0xce/0x640\n kasan_report+0xb8/0xf0\n cifs_fill_dirent+0xb03/0xb60 [cifs]\n cifs_readdir+0x12cb/0x3190 [cifs]\n iterate_dir+0x1a1/0x520\n __x64_sys_getdents+0x134/0x220\n do_syscall_64+0x4b/0x110\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n RIP: 0033:0x7f996f64b9f9\n Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89\n f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01\n f0 ff ff 0d f7 c3 0c 00 f7 d8 64 89 8\n RSP: 002b:00007f996f53de78 EFLAGS: 00000207 ORIG_RAX: 000000000000004e\n RAX: ffffffffffffffda RBX: 00007f996f53ecdc RCX: 00007f996f64b9f9\n RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003\n RBP: 00007f996f53dea0 R08: 0000000000000000 R09: 0000000000000000\n R10: 0000000000000000 R11: 0000000000000207 R12: ffffffffffffff88\n R13: 0000000000000000 R14: 00007ffc8cd9a500 R15: 00007f996f51e000\n \u003c/TASK\u003e\n\n Allocated by task 408:\n kasan_save_stack+0x20/0x40\n kasan_save_track+0x14/0x30\n __kasan_slab_alloc+0x6e/0x70\n kmem_cache_alloc_noprof+0x117/0x3d0\n mempool_alloc_noprof+0xf2/0x2c0\n cifs_buf_get+0x36/0x80 [cifs]\n allocate_buffers+0x1d2/0x330 [cifs]\n cifs_demultiplex_thread+0x22b/0x2690 [cifs]\n kthread+0x394/0x720\n ret_from_fork+0x34/0x70\n ret_from_fork_asm+0x1a/0x30\n\n Freed by task 342979:\n kasan_save_stack+0x20/0x40\n kasan_save_track+0x14/0x30\n kasan_save_free_info+0x3b/0x60\n __kasan_slab_free+0x37/0x50\n kmem_cache_free+0x2b8/0x500\n cifs_buf_release+0x3c/0x70 [cifs]\n cifs_readdir+0x1c97/0x3190 [cifs]\n iterate_dir+0x1a1/0x520\n __x64_sys_getdents64+0x134/0x220\n do_syscall_64+0x4b/0x110\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\n The buggy address belongs to the object at ffff8880099b8000\n which belongs to the cache cifs_request of size 16588\n The buggy address is located 412 bytes inside of\n freed 16588-byte region [ffff8880099b8000, ffff8880099bc0cc)\n\n The buggy address belongs to the physical page:\n page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x99b8\n head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0\n anon flags: 0x80000000000040(head|node=0|zone=1)\n page_type: f5(slab)\n raw: 0080000000000040 ffff888001e03400 0000000000000000 dead000000000001\n raw: 0000000000000000 0000000000010001 00000000f5000000 0000000000000000\n head: 0080000000000040 ffff888001e03400 0000000000000000 dead000000000001\n head: 0000000000000000 0000000000010001 00000000f5000000 0000000000000000\n head: 0080000000000003 ffffea0000266e01 00000000ffffffff 00000000ffffffff\n head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008\n page dumped because: kasan: bad access detected\n\n Memory state around the buggy address:\n ffff8880099b8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\n ffff8880099b8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\n \u003effff8880099b8180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\n ^\n ffff8880099b8200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\n ffff8880099b8280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\n ==================================================================\n\nPOC is available in the link [1].\n\nThe problem triggering process is as follows:\n\nProcess 1 Process 2\n-----------------------------------\n---truncated---"
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The vulnerability is reached purely through local syscalls (`getdents`/`getdents64`, `lseek`, `kill`) on a directory file descriptor of an already-mounted CIFS/SMB share; no network peer action is required to trigger the documented race.\nAC:L - The attacker controls both sides of the race \u2014 one thread forces the buffer release via a backward seek on the shared fd while another is inside `query_dir_next()`, and `-ERESTARTSYS` is induced deterministically by sending a fatal signal \u2014 and can retry indefinitely, as the upstream PoC demonstrates.\nPR:L - Only an unprivileged local account with read access to a directory on an existing CIFS mount is needed; no capability check exists anywhere on the `cifs_readdir` \u2192 `find_cifs_entry` path.\nUI:N - The attacker\u0027s own threads perform every step; the pre-existing SMB mount is an environmental precondition, not an action a victim must take during exploitation.\nS:U - The use-after-free corrupts kernel heap state within the same security authority; there is no VM, IOMMU, or sandbox boundary crossed.\nC:H - The dangling `last_entry` is read from a recycled `cifs_request` buffer, and the resulting `presume_name` pointer plus attacker-influenced `resume_name_len` are later `memcpy`\u0027d (up to `PATH_MAX`) into a FindNext request sent to the server, disclosing freed kernel heap memory.\nI:H - This is a use-after-free on a slab object that is promptly reallocated with data the attacker can groom, and the stale pointer/length values are written back into `srch_inf` \u2014 a primitive leverageable for heap corruption and control-flow influence.\nA:H - The KASAN report shows a slab-use-after-free that oopses the kernel; walking the freed buffer with stale offsets/lengths readily produces a panic, and any local user can repeat it at will."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T11:59:05.253Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/aee067e88d61eb72e966f094e4749c6b14e7008f"
},
{
"url": "https://git.kernel.org/stable/c/a24c2f05ac3c5b0aaa539d9d913826d2643dfd0e"
},
{
"url": "https://git.kernel.org/stable/c/1b197931fbc821bc7e9e91bf619400db563e3338"
},
{
"url": "https://git.kernel.org/stable/c/c8623231e0edfcccb7cc6add0288fa0f0594282f"
},
{
"url": "https://git.kernel.org/stable/c/73cadde98f67f76c5eba00ac0b72c453383cec8b"
},
{
"url": "https://git.kernel.org/stable/c/9bea368648ac46f8593a780760362e40291d22a9"
},
{
"url": "https://git.kernel.org/stable/c/9c9aafbacc183598f064902365e107b5e856531f"
},
{
"url": "https://git.kernel.org/stable/c/a7a8fe56e932a36f43e031b398aef92341bf5ea0"
}
],
"title": "smb: client: Fix use-after-free in cifs_fill_dirent",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-38051",
"datePublished": "2025-06-18T09:33:32.805Z",
"dateReserved": "2025-04-16T04:51:23.979Z",
"dateUpdated": "2026-08-05T11:59:05.253Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2025-40304 (GCVE-0-2025-40304)
Vulnerability from cvelistv5
Published
2025-12-08 00:46
Modified
2026-08-05 12:09
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
fbdev: Add bounds checking in bit_putcs to fix vmalloc-out-of-bounds
Add bounds checking to prevent writes past framebuffer boundaries when
rendering text near screen edges. Return early if the Y position is off-screen
and clip image height to screen boundary. Break from the rendering loop if the
X position is off-screen. When clipping image width to fit the screen, update
the character count to match the clipped width to prevent buffer size
mismatches.
Without the character count update, bit_putcs_aligned and bit_putcs_unaligned
receive mismatched parameters where the buffer is allocated for the clipped
width but cnt reflects the original larger count, causing out-of-bounds writes.
References
| URL | Tags | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
||
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-40304",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-16T19:54:32.739808Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-16T19:54:41.944Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/video/fbdev/core/bitblit.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "996bfaa7372d6718b6d860bdf78f6618e850c702",
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"versionType": "git"
},
{
"lessThan": "f0982400648a3e00580253e0c48e991f34d2684c",
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"versionType": "git"
},
{
"lessThan": "1943b69e87b0ab35032d47de0a7fca9a3d1d6fc1",
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"versionType": "git"
},
{
"lessThan": "ebc0730b490c7f27340b1222e01dd106e820320d",
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"versionType": "git"
},
{
"lessThan": "86df8ade88d290725554cefd03101ecd0fbd3752",
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"versionType": "git"
},
{
"lessThan": "15ba9acafb0517f8359ca30002c189a68ddbb939",
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"versionType": "git"
},
{
"lessThan": "2d1359e11674ed4274934eac8a71877ae5ae7bbb",
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"versionType": "git"
},
{
"lessThan": "3637d34b35b287ab830e66048841ace404382b67",
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/video/fbdev/core/bitblit.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.12"
},
{
"lessThan": "2.6.12",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.302",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.247",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.197",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.159",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.117",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.58",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.17.*",
"status": "unaffected",
"version": "6.17.8",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.4.302",
"versionStartIncluding": "2.6.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.247",
"versionStartIncluding": "2.6.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.197",
"versionStartIncluding": "2.6.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.159",
"versionStartIncluding": "2.6.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.117",
"versionStartIncluding": "2.6.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.58",
"versionStartIncluding": "2.6.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.17.8",
"versionStartIncluding": "2.6.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18",
"versionStartIncluding": "2.6.12",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: Add bounds checking in bit_putcs to fix vmalloc-out-of-bounds\n\nAdd bounds checking to prevent writes past framebuffer boundaries when\nrendering text near screen edges. Return early if the Y position is off-screen\nand clip image height to screen boundary. Break from the rendering loop if the\nX position is off-screen. When clipping image width to fit the screen, update\nthe character count to match the clipped width to prevent buffer size\nmismatches.\n\nWithout the character count update, bit_putcs_aligned and bit_putcs_unaligned\nreceive mismatched parameters where the buffer is allocated for the clipped\nwidth but cnt reflects the original larger count, causing out-of-bounds writes."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - Exploitation requires local access to the framebuffer character device (`/dev/fbN` ioctls FBIOPUT_CON2FBMAP / FBIOPUT_VSCREENINFO) and/or a virtual console, plus a write to the console to trigger the redraw. There is no remote or network-reachable path into fbcon\u0027s glyph blitting.\nAC:L - The reproducer is deterministic \u2014 an ioctl puts the VC geometry out of sync with the framebuffer resolution and the very next console redraw performs the out-of-bounds write; syzbot produced a reliable reproducer and confirmed the fix. No race, no memory-layout luck, and no unusual configuration is required (fbcon with DRM fbdev emulation is the default on ordinary systems).\nPR:L - No capability check exists anywhere on the path: `fbcon_set_con2fb_map_ioctl()` and the `FBIOPUT_CON2FBMAP`/`FBIOPUT_VSCREENINFO` handlers perform no `capable()` test, and the VT resize/mode ioctls only require being the owner of the controlling tty. Any unprivileged local user holding the usual graphics/console device access (group `video`, logind uaccess ACLs, Android/kiosk/embedded graphics processes) can reach it.\nUI:N - The attacker performs every step themselves \u2014 issue the ioctl to desynchronize the console geometry, then write bytes to their own console fd to force the redraw. No victim action or interaction is needed.\nS:U - The corruption occurs in kernel virtual memory and is exploited to escalate within the same kernel security authority. No hypervisor, IOMMU, or sandbox boundary is crossed.\nC:H - The bug yields an out-of-bounds write with an attacker-influenced offset into the vmalloc region, adjacent to other DRM GEM shmem vmapped buffers and kernel objects, which is readily leveraged into arbitrary kernel memory disclosure (e.g. by corrupting neighbouring buffer pointers/lengths or other clients\u0027 graphics buffers that the attacker can mmap).\nI:H - This is a controlled out-of-bounds write: the destination offset is derived from attacker-set VC geometry and font metrics, and the written content is attacker-chosen (console text rendered through a user-supplied font via KDFONTOP), giving a powerful kernel write primitive suitable for privilege escalation.\nA:H - The out-of-bounds write past the vmalloc\u0027d framebuffer corrupts adjacent kernel memory or hits an unmapped guard page, producing a KASAN-confirmed vmalloc-out-of-bounds write and, in production kernels, an oops/panic that can be triggered repeatedly."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T12:09:23.704Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/996bfaa7372d6718b6d860bdf78f6618e850c702"
},
{
"url": "https://git.kernel.org/stable/c/f0982400648a3e00580253e0c48e991f34d2684c"
},
{
"url": "https://git.kernel.org/stable/c/1943b69e87b0ab35032d47de0a7fca9a3d1d6fc1"
},
{
"url": "https://git.kernel.org/stable/c/ebc0730b490c7f27340b1222e01dd106e820320d"
},
{
"url": "https://git.kernel.org/stable/c/86df8ade88d290725554cefd03101ecd0fbd3752"
},
{
"url": "https://git.kernel.org/stable/c/15ba9acafb0517f8359ca30002c189a68ddbb939"
},
{
"url": "https://git.kernel.org/stable/c/2d1359e11674ed4274934eac8a71877ae5ae7bbb"
},
{
"url": "https://git.kernel.org/stable/c/3637d34b35b287ab830e66048841ace404382b67"
}
],
"title": "fbdev: Add bounds checking in bit_putcs to fix vmalloc-out-of-bounds",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-40304",
"datePublished": "2025-12-08T00:46:29.013Z",
"dateReserved": "2025-04-16T07:20:57.185Z",
"dateUpdated": "2026-08-05T12:09:23.704Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2025-40294 (GCVE-0-2025-40294)
Vulnerability from cvelistv5
Published
2025-12-08 00:46
Modified
2026-06-16 19:53
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: MGMT: Fix OOB access in parse_adv_monitor_pattern()
In the parse_adv_monitor_pattern() function, the value of
the 'length' variable is currently limited to HCI_MAX_EXT_AD_LENGTH(251).
The size of the 'value' array in the mgmt_adv_pattern structure is 31.
If the value of 'pattern[i].length' is set in the user space
and exceeds 31, the 'patterns[i].value' array can be accessed
out of bound when copied.
Increasing the size of the 'value' array in
the 'mgmt_adv_pattern' structure will break the userspace.
Considering this, and to avoid OOB access revert the limits for 'offset'
and 'length' back to the value of HCI_MAX_AD_LENGTH.
Found by InfoTeCS on behalf of Linux Verification Center
(linuxtesting.org) with SVACE.
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 99f30e12e588f9982a6eb1916e53510bff25b3b8 Version: db08722fc7d46168fe31d9b8a7b29229dd959f9f Version: db08722fc7d46168fe31d9b8a7b29229dd959f9f Version: db08722fc7d46168fe31d9b8a7b29229dd959f9f Version: db08722fc7d46168fe31d9b8a7b29229dd959f9f Version: 6.1.83 ≤ |
||
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-40294",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-16T19:53:21.459329Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-16T19:53:41.561Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"include/net/bluetooth/mgmt.h",
"net/bluetooth/mgmt.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "96616530f524a0a76248cd44201de0a9e8526190",
"status": "affected",
"version": "99f30e12e588f9982a6eb1916e53510bff25b3b8",
"versionType": "git"
},
{
"lessThan": "5f7350ff2b179764a4f40ba4161b60b8aaef857b",
"status": "affected",
"version": "db08722fc7d46168fe31d9b8a7b29229dd959f9f",
"versionType": "git"
},
{
"lessThan": "4b7d4aa5399b5a64caee639275615c63c008540d",
"status": "affected",
"version": "db08722fc7d46168fe31d9b8a7b29229dd959f9f",
"versionType": "git"
},
{
"lessThan": "3a50d59b3781bc3a4e96533612509546a4c309a7",
"status": "affected",
"version": "db08722fc7d46168fe31d9b8a7b29229dd959f9f",
"versionType": "git"
},
{
"lessThan": "8d59fba49362c65332395789fd82771f1028d87e",
"status": "affected",
"version": "db08722fc7d46168fe31d9b8a7b29229dd959f9f",
"versionType": "git"
},
{
"lessThan": "6.1.159",
"status": "affected",
"version": "6.1.83",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"include/net/bluetooth/mgmt.h",
"net/bluetooth/mgmt.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.6"
},
{
"lessThan": "6.6",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.159",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.117",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.58",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.17.*",
"status": "unaffected",
"version": "6.17.8",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.159",
"versionStartIncluding": "6.1.83",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.117",
"versionStartIncluding": "6.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.58",
"versionStartIncluding": "6.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.17.8",
"versionStartIncluding": "6.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18",
"versionStartIncluding": "6.6",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: MGMT: Fix OOB access in parse_adv_monitor_pattern()\n\nIn the parse_adv_monitor_pattern() function, the value of\nthe \u0027length\u0027 variable is currently limited to HCI_MAX_EXT_AD_LENGTH(251).\nThe size of the \u0027value\u0027 array in the mgmt_adv_pattern structure is 31.\nIf the value of \u0027pattern[i].length\u0027 is set in the user space\nand exceeds 31, the \u0027patterns[i].value\u0027 array can be accessed\nout of bound when copied.\n\nIncreasing the size of the \u0027value\u0027 array in\nthe \u0027mgmt_adv_pattern\u0027 structure will break the userspace.\nConsidering this, and to avoid OOB access revert the limits for \u0027offset\u0027\nand \u0027length\u0027 back to the value of HCI_MAX_AD_LENGTH.\n\nFound by InfoTeCS on behalf of Linux Verification Center\n(linuxtesting.org) with SVACE."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-23T16:01:58.817Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/96616530f524a0a76248cd44201de0a9e8526190"
},
{
"url": "https://git.kernel.org/stable/c/5f7350ff2b179764a4f40ba4161b60b8aaef857b"
},
{
"url": "https://git.kernel.org/stable/c/4b7d4aa5399b5a64caee639275615c63c008540d"
},
{
"url": "https://git.kernel.org/stable/c/3a50d59b3781bc3a4e96533612509546a4c309a7"
},
{
"url": "https://git.kernel.org/stable/c/8d59fba49362c65332395789fd82771f1028d87e"
}
],
"title": "Bluetooth: MGMT: Fix OOB access in parse_adv_monitor_pattern()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-40294",
"datePublished": "2025-12-08T00:46:17.899Z",
"dateReserved": "2025-04-16T07:20:57.185Z",
"dateUpdated": "2026-06-16T19:53:41.561Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2025-38415 (GCVE-0-2025-38415)
Vulnerability from cvelistv5
Published
2025-07-25 13:32
Modified
2026-06-18 20:55
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
Squashfs: check return result of sb_min_blocksize
Syzkaller reports an "UBSAN: shift-out-of-bounds in squashfs_bio_read" bug.
Syzkaller forks multiple processes which after mounting the Squashfs
filesystem, issues an ioctl("/dev/loop0", LOOP_SET_BLOCK_SIZE, 0x8000).
Now if this ioctl occurs at the same time another process is in the
process of mounting a Squashfs filesystem on /dev/loop0, the failure
occurs. When this happens the following code in squashfs_fill_super()
fails.
----
msblk->devblksize = sb_min_blocksize(sb, SQUASHFS_DEVBLK_SIZE);
msblk->devblksize_log2 = ffz(~msblk->devblksize);
----
sb_min_blocksize() returns 0, which means msblk->devblksize is set to 0.
As a result, ffz(~msblk->devblksize) returns 64, and msblk->devblksize_log2
is set to 64.
This subsequently causes the
UBSAN: shift-out-of-bounds in fs/squashfs/block.c:195:36
shift exponent 64 is too large for 64-bit type 'u64' (aka
'unsigned long long')
This commit adds a check for a 0 return by sb_min_blocksize().
References
| URL | Tags | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 0aa666190509ffab81c202c5095a166be23961ac Version: 0aa666190509ffab81c202c5095a166be23961ac Version: 0aa666190509ffab81c202c5095a166be23961ac Version: 0aa666190509ffab81c202c5095a166be23961ac Version: 0aa666190509ffab81c202c5095a166be23961ac Version: 0aa666190509ffab81c202c5095a166be23961ac Version: 0aa666190509ffab81c202c5095a166be23961ac Version: 0aa666190509ffab81c202c5095a166be23961ac |
||
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2025-11-03T17:37:45.927Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-38415",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-18T20:55:21.631432Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-18T20:55:27.614Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/squashfs/super.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "db7096ea160e40d78c67fce52e7cc51bde049497",
"status": "affected",
"version": "0aa666190509ffab81c202c5095a166be23961ac",
"versionType": "git"
},
{
"lessThan": "549f9e3d7b60d53808c98b9fde49b4f46d0524a5",
"status": "affected",
"version": "0aa666190509ffab81c202c5095a166be23961ac",
"versionType": "git"
},
{
"lessThan": "5c51aa862cbeed2f3887f0382a2708956710bd68",
"status": "affected",
"version": "0aa666190509ffab81c202c5095a166be23961ac",
"versionType": "git"
},
{
"lessThan": "6abf6b78c6fb112eee495f5636ffcc350dd2ce25",
"status": "affected",
"version": "0aa666190509ffab81c202c5095a166be23961ac",
"versionType": "git"
},
{
"lessThan": "4f99357dadbf9c979ad737156ad4c37fadf7c56b",
"status": "affected",
"version": "0aa666190509ffab81c202c5095a166be23961ac",
"versionType": "git"
},
{
"lessThan": "0aff95d9bc7fb5400ca8af507429c4b067bdb425",
"status": "affected",
"version": "0aa666190509ffab81c202c5095a166be23961ac",
"versionType": "git"
},
{
"lessThan": "295ab18c2dbce8d0ac6ecf7c5187e16e1ac8b282",
"status": "affected",
"version": "0aa666190509ffab81c202c5095a166be23961ac",
"versionType": "git"
},
{
"lessThan": "734aa85390ea693bb7eaf2240623d41b03705c84",
"status": "affected",
"version": "0aa666190509ffab81c202c5095a166be23961ac",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/squashfs/super.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.29"
},
{
"lessThan": "2.6.29",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.295",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.239",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.186",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.142",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.94",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.34",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.15.*",
"status": "unaffected",
"version": "6.15.3",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.16",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.4.295",
"versionStartIncluding": "2.6.29",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.239",
"versionStartIncluding": "2.6.29",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.186",
"versionStartIncluding": "2.6.29",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.142",
"versionStartIncluding": "2.6.29",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.94",
"versionStartIncluding": "2.6.29",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.34",
"versionStartIncluding": "2.6.29",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.15.3",
"versionStartIncluding": "2.6.29",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.16",
"versionStartIncluding": "2.6.29",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nSquashfs: check return result of sb_min_blocksize\n\nSyzkaller reports an \"UBSAN: shift-out-of-bounds in squashfs_bio_read\" bug.\n\nSyzkaller forks multiple processes which after mounting the Squashfs\nfilesystem, issues an ioctl(\"/dev/loop0\", LOOP_SET_BLOCK_SIZE, 0x8000). \nNow if this ioctl occurs at the same time another process is in the\nprocess of mounting a Squashfs filesystem on /dev/loop0, the failure\noccurs. When this happens the following code in squashfs_fill_super()\nfails.\n\n----\nmsblk-\u003edevblksize = sb_min_blocksize(sb, SQUASHFS_DEVBLK_SIZE);\nmsblk-\u003edevblksize_log2 = ffz(~msblk-\u003edevblksize);\n----\n\nsb_min_blocksize() returns 0, which means msblk-\u003edevblksize is set to 0.\n\nAs a result, ffz(~msblk-\u003edevblksize) returns 64, and msblk-\u003edevblksize_log2\nis set to 64.\n\nThis subsequently causes the\n\nUBSAN: shift-out-of-bounds in fs/squashfs/block.c:195:36\nshift exponent 64 is too large for 64-bit type \u0027u64\u0027 (aka\n\u0027unsigned long long\u0027)\n\nThis commit adds a check for a 0 return by sb_min_blocksize()."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-11T21:27:32.721Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/db7096ea160e40d78c67fce52e7cc51bde049497"
},
{
"url": "https://git.kernel.org/stable/c/549f9e3d7b60d53808c98b9fde49b4f46d0524a5"
},
{
"url": "https://git.kernel.org/stable/c/5c51aa862cbeed2f3887f0382a2708956710bd68"
},
{
"url": "https://git.kernel.org/stable/c/6abf6b78c6fb112eee495f5636ffcc350dd2ce25"
},
{
"url": "https://git.kernel.org/stable/c/4f99357dadbf9c979ad737156ad4c37fadf7c56b"
},
{
"url": "https://git.kernel.org/stable/c/0aff95d9bc7fb5400ca8af507429c4b067bdb425"
},
{
"url": "https://git.kernel.org/stable/c/295ab18c2dbce8d0ac6ecf7c5187e16e1ac8b282"
},
{
"url": "https://git.kernel.org/stable/c/734aa85390ea693bb7eaf2240623d41b03705c84"
}
],
"title": "Squashfs: check return result of sb_min_blocksize",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-38415",
"datePublished": "2025-07-25T13:32:09.711Z",
"dateReserved": "2025-04-16T04:51:24.013Z",
"dateUpdated": "2026-06-18T20:55:27.614Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2023-53762 (GCVE-0-2023-53762)
Vulnerability from cvelistv5
Published
2025-12-08 01:19
Modified
2026-10-03 10:55
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_sync: Fix UAF in hci_disconnect_all_sync
Use-after-free can occur in hci_disconnect_all_sync if a connection is
deleted by concurrent processing of a controller event.
To prevent this the code now tries to iterate over the list backwards
to ensure the links are cleanup before its parents, also it no longer
relies on a cursor, instead it always uses the last element since
hci_abort_conn_sync is guaranteed to call hci_conn_del.
UAF crash log:
==================================================================
BUG: KASAN: slab-use-after-free in hci_set_powered_sync
(net/bluetooth/hci_sync.c:5424) [bluetooth]
Read of size 8 at addr ffff888009d9c000 by task kworker/u9:0/124
CPU: 0 PID: 124 Comm: kworker/u9:0 Tainted: G W
6.5.0-rc1+ #10
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS
1.16.2-1.fc38 04/01/2014
Workqueue: hci0 hci_cmd_sync_work [bluetooth]
Call Trace:
<TASK>
dump_stack_lvl+0x5b/0x90
print_report+0xcf/0x670
? __virt_addr_valid+0xdd/0x160
? hci_set_powered_sync+0x2c9/0x4a0 [bluetooth]
kasan_report+0xa6/0xe0
? hci_set_powered_sync+0x2c9/0x4a0 [bluetooth]
? __pfx_set_powered_sync+0x10/0x10 [bluetooth]
hci_set_powered_sync+0x2c9/0x4a0 [bluetooth]
? __pfx_hci_set_powered_sync+0x10/0x10 [bluetooth]
? __pfx_lock_release+0x10/0x10
? __pfx_set_powered_sync+0x10/0x10 [bluetooth]
hci_cmd_sync_work+0x137/0x220 [bluetooth]
process_one_work+0x526/0x9d0
? __pfx_process_one_work+0x10/0x10
? __pfx_do_raw_spin_lock+0x10/0x10
? mark_held_locks+0x1a/0x90
worker_thread+0x92/0x630
? __pfx_worker_thread+0x10/0x10
kthread+0x196/0x1e0
? __pfx_kthread+0x10/0x10
ret_from_fork+0x2c/0x50
</TASK>
Allocated by task 1782:
kasan_save_stack+0x33/0x60
kasan_set_track+0x25/0x30
__kasan_kmalloc+0x8f/0xa0
hci_conn_add+0xa5/0xa80 [bluetooth]
hci_bind_cis+0x881/0x9b0 [bluetooth]
iso_connect_cis+0x121/0x520 [bluetooth]
iso_sock_connect+0x3f6/0x790 [bluetooth]
__sys_connect+0x109/0x130
__x64_sys_connect+0x40/0x50
do_syscall_64+0x60/0x90
entry_SYSCALL_64_after_hwframe+0x6e/0xd8
Freed by task 695:
kasan_save_stack+0x33/0x60
kasan_set_track+0x25/0x30
kasan_save_free_info+0x2b/0x50
__kasan_slab_free+0x10a/0x180
__kmem_cache_free+0x14d/0x2e0
device_release+0x5d/0xf0
kobject_put+0xdf/0x270
hci_disconn_complete_evt+0x274/0x3a0 [bluetooth]
hci_event_packet+0x579/0x7e0 [bluetooth]
hci_rx_work+0x287/0xaa0 [bluetooth]
process_one_work+0x526/0x9d0
worker_thread+0x92/0x630
kthread+0x196/0x1e0
ret_from_fork+0x2c/0x50
==================================================================
References
| URL | Tags | |
|---|---|---|
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2023-53762",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-16T15:46:42.482426Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-16T15:47:51.661Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/bluetooth/hci_sync.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "5e3ee972f185eb7957ce789b3bf13a3cb790f178",
"status": "affected",
"version": "182ee45da083db4e3e621541ccf255bfa9652214",
"versionType": "git"
},
{
"lessThan": "a30c074f0b5b7f909a15c978fbc96a29e2f94e42",
"status": "affected",
"version": "182ee45da083db4e3e621541ccf255bfa9652214",
"versionType": "git"
},
{
"lessThan": "ba3ba53ce1f76fc372b8f918fece4f9b1e41acd4",
"status": "affected",
"version": "182ee45da083db4e3e621541ccf255bfa9652214",
"versionType": "git"
},
{
"lessThan": "94d9ba9f9888b748d4abd2aa1547af56ae85f772",
"status": "affected",
"version": "182ee45da083db4e3e621541ccf255bfa9652214",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/bluetooth/hci_sync.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.17"
},
{
"lessThan": "5.17",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.4.*",
"status": "unaffected",
"version": "6.4.16",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.5.*",
"status": "unaffected",
"version": "6.5.3",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.6",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.189",
"versionStartIncluding": "5.17",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.4.16",
"versionStartIncluding": "5.17",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.5.3",
"versionStartIncluding": "5.17",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6",
"versionStartIncluding": "5.17",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_sync: Fix UAF in hci_disconnect_all_sync\n\nUse-after-free can occur in hci_disconnect_all_sync if a connection is\ndeleted by concurrent processing of a controller event.\n\nTo prevent this the code now tries to iterate over the list backwards\nto ensure the links are cleanup before its parents, also it no longer\nrelies on a cursor, instead it always uses the last element since\nhci_abort_conn_sync is guaranteed to call hci_conn_del.\n\nUAF crash log:\n==================================================================\nBUG: KASAN: slab-use-after-free in hci_set_powered_sync\n(net/bluetooth/hci_sync.c:5424) [bluetooth]\nRead of size 8 at addr ffff888009d9c000 by task kworker/u9:0/124\n\nCPU: 0 PID: 124 Comm: kworker/u9:0 Tainted: G W\n6.5.0-rc1+ #10\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS\n1.16.2-1.fc38 04/01/2014\nWorkqueue: hci0 hci_cmd_sync_work [bluetooth]\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x5b/0x90\n print_report+0xcf/0x670\n ? __virt_addr_valid+0xdd/0x160\n ? hci_set_powered_sync+0x2c9/0x4a0 [bluetooth]\n kasan_report+0xa6/0xe0\n ? hci_set_powered_sync+0x2c9/0x4a0 [bluetooth]\n ? __pfx_set_powered_sync+0x10/0x10 [bluetooth]\n hci_set_powered_sync+0x2c9/0x4a0 [bluetooth]\n ? __pfx_hci_set_powered_sync+0x10/0x10 [bluetooth]\n ? __pfx_lock_release+0x10/0x10\n ? __pfx_set_powered_sync+0x10/0x10 [bluetooth]\n hci_cmd_sync_work+0x137/0x220 [bluetooth]\n process_one_work+0x526/0x9d0\n ? __pfx_process_one_work+0x10/0x10\n ? __pfx_do_raw_spin_lock+0x10/0x10\n ? mark_held_locks+0x1a/0x90\n worker_thread+0x92/0x630\n ? __pfx_worker_thread+0x10/0x10\n kthread+0x196/0x1e0\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x2c/0x50\n \u003c/TASK\u003e\n\nAllocated by task 1782:\n kasan_save_stack+0x33/0x60\n kasan_set_track+0x25/0x30\n __kasan_kmalloc+0x8f/0xa0\n hci_conn_add+0xa5/0xa80 [bluetooth]\n hci_bind_cis+0x881/0x9b0 [bluetooth]\n iso_connect_cis+0x121/0x520 [bluetooth]\n iso_sock_connect+0x3f6/0x790 [bluetooth]\n __sys_connect+0x109/0x130\n __x64_sys_connect+0x40/0x50\n do_syscall_64+0x60/0x90\n entry_SYSCALL_64_after_hwframe+0x6e/0xd8\n\nFreed by task 695:\n kasan_save_stack+0x33/0x60\n kasan_set_track+0x25/0x30\n kasan_save_free_info+0x2b/0x50\n __kasan_slab_free+0x10a/0x180\n __kmem_cache_free+0x14d/0x2e0\n device_release+0x5d/0xf0\n kobject_put+0xdf/0x270\n hci_disconn_complete_evt+0x274/0x3a0 [bluetooth]\n hci_event_packet+0x579/0x7e0 [bluetooth]\n hci_rx_work+0x287/0xaa0 [bluetooth]\n process_one_work+0x526/0x9d0\n worker_thread+0x92/0x630\n kthread+0x196/0x1e0\n ret_from_fork+0x2c/0x50\n=================================================================="
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 8.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:A - The freeing side of the race is `hci_disconn_complete_evt()` processed from HCI events generated by a peer Bluetooth device terminating a link or causing link-supervision timeout, so the attacker must be a device within Bluetooth radio range. Bluetooth reachability is scored Adjacent.\nAC:L - The attacker controls the free side entirely (link teardown timing and the multi-link ACL/SCO or LE/CIS topology that makes `hci_conn_unlink()` cascade a `hci_conn_del()` onto the loop\u0027s cached cursor), and the window is wide because `hci_disconnect_sync()` sleeps on `HCI_CMD_TIMEOUT` without waiting for Disconnect Complete. The victim-side trigger (adapter power-off or the routine autosuspend path via `hci_suspend_sync()`) recurs constantly, and attempts can be retried indefinitely.\nPR:N - The attacker needs no account, capability, or credential on the target host \u2014 only an in-range Bluetooth link, which for LE/L2CAP/CIS can be established without pairing. No local privilege on the victim is required to deliver the disconnect that frees the `hci_conn`.\nUI:N - `hci_disconnect_all_sync()` is reached automatically by `hci_suspend_sync()` on every system/auto suspend that has active connections, and by rfkill/adapter power-down performed by system daemons. No deliberate victim action is needed.\nS:U - The corruption stays within the kernel\u0027s own security authority; there is no crossing into a hypervisor, IOMMU, or other separate security scope.\nC:H - The freed `hci_conn` is read after free (`conn-\u003estate`, `conn-\u003ehandle`, `conn-\u003etype`, `conn-\u003edst`) from a sprayable general kmalloc cache, letting an attacker who reallocates the slot both leak kernel memory contents and steer subsequent reads for arbitrary disclosure.\nI:H - The dangling object is passed on to `hci_conn_failed()`/`hci_conn_del()`, which performs `list_del` on attacker-controlled list pointers (write primitive) and calls the `conn-\u003ecleanup(conn)` function pointer out of freed memory in `hci_conn_cleanup()`, giving control-flow hijack and privilege escalation potential.\nA:H - The confirmed KASAN slab-use-after-free in the `hci_cmd_sync_work` kernel worker crashes the kernel, and it can be re-triggered on every power-off/suspend cycle for persistent denial of service."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-03T10:55:01.032Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/5e3ee972f185eb7957ce789b3bf13a3cb790f178"
},
{
"url": "https://git.kernel.org/stable/c/a30c074f0b5b7f909a15c978fbc96a29e2f94e42"
},
{
"url": "https://git.kernel.org/stable/c/ba3ba53ce1f76fc372b8f918fece4f9b1e41acd4"
},
{
"url": "https://git.kernel.org/stable/c/94d9ba9f9888b748d4abd2aa1547af56ae85f772"
}
],
"title": "Bluetooth: hci_sync: Fix UAF in hci_disconnect_all_sync",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2023-53762",
"datePublished": "2025-12-08T01:19:23.927Z",
"dateReserved": "2025-12-08T01:18:04.281Z",
"dateUpdated": "2026-10-03T10:55:01.032Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2025-40271 (GCVE-0-2025-40271)
Vulnerability from cvelistv5
Published
2025-12-06 21:50
Modified
2026-08-05 12:09
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
fs/proc: fix uaf in proc_readdir_de()
Pde is erased from subdir rbtree through rb_erase(), but not set the node
to EMPTY, which may result in uaf access. We should use RB_CLEAR_NODE()
set the erased node to EMPTY, then pde_subdir_next() will return NULL to
avoid uaf access.
We found an uaf issue while using stress-ng testing, need to run testcase
getdent and tun in the same time. The steps of the issue is as follows:
1) use getdent to traverse dir /proc/pid/net/dev_snmp6/, and current
pde is tun3;
2) in the [time windows] unregister netdevice tun3 and tun2, and erase
them from rbtree. erase tun3 first, and then erase tun2. the
pde(tun2) will be released to slab;
3) continue to getdent process, then pde_subdir_next() will return
pde(tun2) which is released, it will case uaf access.
CPU 0 | CPU 1
-------------------------------------------------------------------------
traverse dir /proc/pid/net/dev_snmp6/ | unregister_netdevice(tun->dev) //tun3 tun2
sys_getdents64() |
iterate_dir() |
proc_readdir() |
proc_readdir_de() | snmp6_unregister_dev()
pde_get(de); | proc_remove()
read_unlock(&proc_subdir_lock); | remove_proc_subtree()
| write_lock(&proc_subdir_lock);
[time window] | rb_erase(&root->subdir_node, &parent->subdir);
| write_unlock(&proc_subdir_lock);
read_lock(&proc_subdir_lock); |
next = pde_subdir_next(de); |
pde_put(de); |
de = next; //UAF |
rbtree of dev_snmp6
|
pde(tun3)
/ \
NULL pde(tun2)
References
| URL | Tags | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 710585d4922fd315f2cada8fbe550ae8ed23e994 Version: 710585d4922fd315f2cada8fbe550ae8ed23e994 Version: 710585d4922fd315f2cada8fbe550ae8ed23e994 Version: 710585d4922fd315f2cada8fbe550ae8ed23e994 Version: 710585d4922fd315f2cada8fbe550ae8ed23e994 Version: 710585d4922fd315f2cada8fbe550ae8ed23e994 Version: 710585d4922fd315f2cada8fbe550ae8ed23e994 Version: 710585d4922fd315f2cada8fbe550ae8ed23e994 |
||
{
"containers": {
"adp": [
{
"affected": [
{
"defaultStatus": "unknown",
"product": "RUGGEDCOM RST2428P",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V4.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-02T13:00:17.378Z",
"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"shortName": "siemens-SADP"
},
"references": [
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-253495.html"
}
],
"x_adpType": "supplier"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-40271",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-16T19:37:49.226666Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-16T19:37:59.970Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/proc/generic.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "1d1596d68a6f11d28f677eedf6cf5b17dbfeb491",
"status": "affected",
"version": "710585d4922fd315f2cada8fbe550ae8ed23e994",
"versionType": "git"
},
{
"lessThan": "c81d0385500446efe48c305bbb83d47f2ae23a50",
"status": "affected",
"version": "710585d4922fd315f2cada8fbe550ae8ed23e994",
"versionType": "git"
},
{
"lessThan": "4cba73c4c89219beef7685a47374bf88b1022369",
"status": "affected",
"version": "710585d4922fd315f2cada8fbe550ae8ed23e994",
"versionType": "git"
},
{
"lessThan": "6f2482745e510ae1dacc9b090194b9c5f918d774",
"status": "affected",
"version": "710585d4922fd315f2cada8fbe550ae8ed23e994",
"versionType": "git"
},
{
"lessThan": "67272c11f379d9aa5e0f6b16286b9d89b3f76046",
"status": "affected",
"version": "710585d4922fd315f2cada8fbe550ae8ed23e994",
"versionType": "git"
},
{
"lessThan": "623bb26127fb581a741e880e1e1a47d79aecb6f8",
"status": "affected",
"version": "710585d4922fd315f2cada8fbe550ae8ed23e994",
"versionType": "git"
},
{
"lessThan": "03de7ff197a3d0e17d0d5c58fdac99a63cba8110",
"status": "affected",
"version": "710585d4922fd315f2cada8fbe550ae8ed23e994",
"versionType": "git"
},
{
"lessThan": "895b4c0c79b092d732544011c3cecaf7322c36a1",
"status": "affected",
"version": "710585d4922fd315f2cada8fbe550ae8ed23e994",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/proc/generic.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "3.19"
},
{
"lessThan": "3.19",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.302",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.247",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.197",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.159",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.117",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.59",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.17.*",
"status": "unaffected",
"version": "6.17.9",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.4.302",
"versionStartIncluding": "3.19",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.247",
"versionStartIncluding": "3.19",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.197",
"versionStartIncluding": "3.19",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.159",
"versionStartIncluding": "3.19",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.117",
"versionStartIncluding": "3.19",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.59",
"versionStartIncluding": "3.19",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.17.9",
"versionStartIncluding": "3.19",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18",
"versionStartIncluding": "3.19",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/proc: fix uaf in proc_readdir_de()\n\nPde is erased from subdir rbtree through rb_erase(), but not set the node\nto EMPTY, which may result in uaf access. We should use RB_CLEAR_NODE()\nset the erased node to EMPTY, then pde_subdir_next() will return NULL to\navoid uaf access.\n\nWe found an uaf issue while using stress-ng testing, need to run testcase\ngetdent and tun in the same time. The steps of the issue is as follows:\n\n1) use getdent to traverse dir /proc/pid/net/dev_snmp6/, and current\n pde is tun3;\n\n2) in the [time windows] unregister netdevice tun3 and tun2, and erase\n them from rbtree. erase tun3 first, and then erase tun2. the\n pde(tun2) will be released to slab;\n\n3) continue to getdent process, then pde_subdir_next() will return\n pde(tun2) which is released, it will case uaf access.\n\nCPU 0 | CPU 1\n-------------------------------------------------------------------------\ntraverse dir /proc/pid/net/dev_snmp6/ | unregister_netdevice(tun-\u003edev) //tun3 tun2\nsys_getdents64() |\n iterate_dir() |\n proc_readdir() |\n proc_readdir_de() | snmp6_unregister_dev()\n pde_get(de); | proc_remove()\n read_unlock(\u0026proc_subdir_lock); | remove_proc_subtree()\n | write_lock(\u0026proc_subdir_lock);\n [time window] | rb_erase(\u0026root-\u003esubdir_node, \u0026parent-\u003esubdir);\n | write_unlock(\u0026proc_subdir_lock);\n read_lock(\u0026proc_subdir_lock); |\n next = pde_subdir_next(de); |\n pde_put(de); |\n de = next; //UAF |\n\nrbtree of dev_snmp6\n |\n pde(tun3)\n / \\\n NULL pde(tun2)"
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The vulnerability is triggered entirely through local syscalls \u2014 `getdents64(2)` on a procfs directory racing against `unshare(2)`/rtnetlink operations that remove `/proc` entries. No network or remote-peer data is involved.\nAC:L - The attacker owns both sides of the race: one thread iterates `/proc/self/net/dev_snmp6` while another spins netdevice rename/unregister to erase entries, and the `dir_emit()` window can be stretched arbitrarily by backing the `getdents64` buffer with userfaultfd or FUSE so the reader stalls in `copy_to_user` while the neighbour pde is freed and the slab groomed. The sequence is unbounded and retryable.\nPR:L - Reading `/proc/self/net/dev_snmp6` requires no privilege at all, and the removal side needs only `CAP_NET_ADMIN` inside an attacker-created user+network namespace (`unshare -Urn`), which any unprivileged user obtains on default distro configurations. No real root in the init namespace is needed.\nUI:N - The attacker drives both the directory iteration and the proc-entry removal from its own threads; no victim action or cooperation is required.\nS:U - The corruption is confined to kernel heap objects managed by the same kernel security authority; there is no VM, IOMMU, or hypervisor boundary crossed.\nC:H - `dir_emit(ctx, de-\u003ename, de-\u003enamelen, ...)` reads the `char *name` pointer and `u8 namelen` out of the freed `proc_dir_entry` and copies up to 255 bytes from that pointer directly into the user\u0027s dirent buffer, giving a repeatable arbitrary-kernel-memory read into userspace once the slab object is reclaimed with attacker-influenced content.\nI:H - The use-after-free yields `refcount_inc()`/`refcount_dec_and_test()` on freed memory plus `pde_free()` performing `kfree(pde-\u003edata)`/`kfree(pde-\u003ename)` on pointers read from the reallocated object, providing arbitrary-free and heap-corruption primitives that are a standard basis for local privilege escalation.\nA:H - Dereferencing stale rbtree links into freed slab memory reliably produces a kernel oops/panic (as observed under stress-ng with getdents+tun), and the race can be re-run indefinitely to crash the system on demand."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T12:09:04.518Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/1d1596d68a6f11d28f677eedf6cf5b17dbfeb491"
},
{
"url": "https://git.kernel.org/stable/c/c81d0385500446efe48c305bbb83d47f2ae23a50"
},
{
"url": "https://git.kernel.org/stable/c/4cba73c4c89219beef7685a47374bf88b1022369"
},
{
"url": "https://git.kernel.org/stable/c/6f2482745e510ae1dacc9b090194b9c5f918d774"
},
{
"url": "https://git.kernel.org/stable/c/67272c11f379d9aa5e0f6b16286b9d89b3f76046"
},
{
"url": "https://git.kernel.org/stable/c/623bb26127fb581a741e880e1e1a47d79aecb6f8"
},
{
"url": "https://git.kernel.org/stable/c/03de7ff197a3d0e17d0d5c58fdac99a63cba8110"
},
{
"url": "https://git.kernel.org/stable/c/895b4c0c79b092d732544011c3cecaf7322c36a1"
}
],
"title": "fs/proc: fix uaf in proc_readdir_de()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-40271",
"datePublished": "2025-12-06T21:50:53.266Z",
"dateReserved": "2025-04-16T07:20:57.183Z",
"dateUpdated": "2026-08-05T12:09:04.518Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2025-40269 (GCVE-0-2025-40269)
Vulnerability from cvelistv5
Published
2025-12-06 21:50
Modified
2026-08-05 12:09
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
ALSA: usb-audio: Fix potential overflow of PCM transfer buffer
The PCM stream data in USB-audio driver is transferred over USB URB
packet buffers, and each packet size is determined dynamically. The
packet sizes are limited by some factors such as wMaxPacketSize USB
descriptor. OTOH, in the current code, the actually used packet sizes
are determined only by the rate and the PPS, which may be bigger than
the size limit above. This results in a buffer overflow, as reported
by syzbot.
Basically when the limit is smaller than the calculated packet size,
it implies that something is wrong, most likely a weird USB
descriptor. So the best option would be just to return an error at
the parameter setup time before doing any further operations.
This patch introduces such a sanity check, and returns -EINVAL when
the packet size is greater than maxpacksize. The comparison with
ep->packsize[1] alone should suffice since it's always equal or
greater than ep->packsize[0].
References
| URL | Tags | ||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 02c56650f3c118d3752122996d96173d26bb13aa Version: 5ef30e443e6d3654cccecec99cf481a69a0a6d3b Version: 99703c921864a318e3e8aae74fde071b1ff35bea Version: 2d50acd7dbd0682a56968ad9551341d7fc5b6eaf Version: aba41867dd66939d336fdf604e4d73b805d8039f Version: d288dc74f8cf95cb7ae0aaf245b7128627a49bf3 Version: f0bd62b64016508938df9babe47f65c2c727d25c Version: f0bd62b64016508938df9babe47f65c2c727d25c Version: f0bd62b64016508938df9babe47f65c2c727d25c Version: f0bd62b64016508938df9babe47f65c2c727d25c Version: f0bd62b64016508938df9babe47f65c2c727d25c Version: f0bd62b64016508938df9babe47f65c2c727d25c Version: f0bd62b64016508938df9babe47f65c2c727d25c Version: 4.4.229 ≤ Version: 4.9.229 ≤ Version: 4.14.186 ≤ Version: 4.19.130 ≤ Version: 5.4.49 ≤ Version: 5.7.6 ≤ |
||
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-40269",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-16T20:14:17.883716Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-16T20:14:28.678Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"sound/usb/endpoint.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "480a1490c595a242f27493a4544b3efb21b29f6a",
"status": "affected",
"version": "02c56650f3c118d3752122996d96173d26bb13aa",
"versionType": "git"
},
{
"lessThan": "ab0b5e92fc36ee82c1bd01fe896d0f775ed5de41",
"status": "affected",
"version": "5ef30e443e6d3654cccecec99cf481a69a0a6d3b",
"versionType": "git"
},
{
"lessThan": "282aba56713bbc58155716b55ca7222b2d9cf3c8",
"status": "affected",
"version": "99703c921864a318e3e8aae74fde071b1ff35bea",
"versionType": "git"
},
{
"lessThan": "c4dc012b027c9eb101583011089dea14d744e314",
"status": "affected",
"version": "2d50acd7dbd0682a56968ad9551341d7fc5b6eaf",
"versionType": "git"
},
{
"lessThan": "e0ed5a36fb3ab9e7b9ee45cd17f09f6d5f594360",
"status": "affected",
"version": "aba41867dd66939d336fdf604e4d73b805d8039f",
"versionType": "git"
},
{
"lessThan": "d67dde02049e632ba58d3c44a164a74b6a737154",
"status": "affected",
"version": "d288dc74f8cf95cb7ae0aaf245b7128627a49bf3",
"versionType": "git"
},
{
"lessThan": "6a5da3fa80affc948923f20a4e086177f505e86e",
"status": "affected",
"version": "f0bd62b64016508938df9babe47f65c2c727d25c",
"versionType": "git"
},
{
"lessThan": "217d47255a2ec8b246f2725f5db9ac3f1d4109d7",
"status": "affected",
"version": "f0bd62b64016508938df9babe47f65c2c727d25c",
"versionType": "git"
},
{
"lessThan": "ef592bf2232a2daa9fffa8881881fc9957ea56e9",
"status": "affected",
"version": "f0bd62b64016508938df9babe47f65c2c727d25c",
"versionType": "git"
},
{
"lessThan": "ece3b981bb6620e47fac826a2156c090b1a936a0",
"status": "affected",
"version": "f0bd62b64016508938df9babe47f65c2c727d25c",
"versionType": "git"
},
{
"lessThan": "98e9d5e33bda8db875cc1a4fe99c192658e45ab6",
"status": "affected",
"version": "f0bd62b64016508938df9babe47f65c2c727d25c",
"versionType": "git"
},
{
"lessThan": "d2c04f20ccc6c0d219e6d3038bab45bc66a178ad",
"status": "affected",
"version": "f0bd62b64016508938df9babe47f65c2c727d25c",
"versionType": "git"
},
{
"lessThan": "05a1fc5efdd8560f34a3af39c9cf1e1526cc3ddf",
"status": "affected",
"version": "f0bd62b64016508938df9babe47f65c2c727d25c",
"versionType": "git"
},
{
"lessThan": "4.4.230",
"status": "affected",
"version": "4.4.229",
"versionType": "semver"
},
{
"lessThan": "4.9.230",
"status": "affected",
"version": "4.9.229",
"versionType": "semver"
},
{
"lessThan": "4.14.188",
"status": "affected",
"version": "4.14.186",
"versionType": "semver"
},
{
"lessThan": "4.19.132",
"status": "affected",
"version": "4.19.130",
"versionType": "semver"
},
{
"lessThan": "5.4.51",
"status": "affected",
"version": "5.4.49",
"versionType": "semver"
},
{
"lessThan": "5.7.8",
"status": "affected",
"version": "5.7.6",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"sound/usb/endpoint.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.8"
},
{
"lessThan": "5.8",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.4.*",
"status": "unaffected",
"version": "4.4.230",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.9.*",
"status": "unaffected",
"version": "4.9.230",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.14.*",
"status": "unaffected",
"version": "4.14.188",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"version": "4.19.132",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.51",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.7.*",
"status": "unaffected",
"version": "5.7.8",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.247",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.197",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.159",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.117",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.59",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.17.*",
"status": "unaffected",
"version": "6.17.9",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.4.230",
"versionStartIncluding": "4.4.229",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.9.230",
"versionStartIncluding": "4.9.229",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.14.188",
"versionStartIncluding": "4.14.186",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.19.132",
"versionStartIncluding": "4.19.130",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.4.51",
"versionStartIncluding": "5.4.49",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.7.8",
"versionStartIncluding": "5.7.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.247",
"versionStartIncluding": "5.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.197",
"versionStartIncluding": "5.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.159",
"versionStartIncluding": "5.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.117",
"versionStartIncluding": "5.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.59",
"versionStartIncluding": "5.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.17.9",
"versionStartIncluding": "5.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18",
"versionStartIncluding": "5.8",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-audio: Fix potential overflow of PCM transfer buffer\n\nThe PCM stream data in USB-audio driver is transferred over USB URB\npacket buffers, and each packet size is determined dynamically. The\npacket sizes are limited by some factors such as wMaxPacketSize USB\ndescriptor. OTOH, in the current code, the actually used packet sizes\nare determined only by the rate and the PPS, which may be bigger than\nthe size limit above. This results in a buffer overflow, as reported\nby syzbot.\n\nBasically when the limit is smaller than the calculated packet size,\nit implies that something is wrong, most likely a weird USB\ndescriptor. So the best option would be just to return an error at\nthe parameter setup time before doing any further operations.\n\nThis patch introduces such a sanity check, and returns -EINVAL when\nthe packet size is greater than maxpacksize. The comparison with\nep-\u003epacksize[1] alone should suffice since it\u0027s always equal or\ngreater than ep-\u003epacksize[0]."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The overflow is driven by locally-supplied `hw_params` (rate/format/channels) written via ioctl on `/dev/snd/pcmC*D*p` plus PCM data the attacker writes into the mmap\u0027d buffer, on any system with a USB audio endpoint present (USB headsets/DACs/webcam mics are ubiquitous on desktops, Android, kiosks and embedded systems). Although a malformed descriptor is one way to reach it, no physical interaction is required for a local attacker on a machine with an attached USB audio device.\nAC:L - The attacker deterministically chooses the rate and sample format that make `packsize[1] * stride` exceed the `wMaxPacketSize`-derived buffer, then triggers the copy by starting playback \u2014 no race, no memory-layout guessing, and the condition is fully reproducible on every URB submission.\nPR:L - Only access to the ALSA PCM device node is required, which is granted to the logged-in session user via logind ACLs or membership in the `audio` group; no CAP_SYS_ADMIN or root is needed.\nUI:N - The attacking process performs open/hw_params/prepare/write entirely on its own; no victim action is needed, and on desktop/Android systems PipeWire/AudioFlinger will even drive the stream automatically on hotplug.\nS:U - The corruption stays within the kernel\u0027s own memory and the USB host controller\u0027s DMA-coherent pool, managed by the same security authority; no VM, IOMMU or sandbox boundary is crossed.\nC:H - The oversized `iso_frame_desc` lengths cause the host controller to DMA kernel memory beyond the allocated coherent buffer out to the USB device, disclosing adjacent kernel heap contents to the attacker; heap corruption can also be leveraged for broader arbitrary read.\nI:H - `copy_to_urb()` memcpy\u0027s an attacker-controlled length of attacker-controlled PCM bytes past the end of the coherent URB buffer, giving a heap out-of-bounds write with controlled content \u2014 a primitive suitable for corrupting adjacent objects and hijacking control flow.\nA:H - Overrunning the DMA-coherent transfer buffer corrupts neighbouring kernel/DMA-pool memory and reliably produces an oops or panic, as observed in the syzbot report and the related bugzilla crash reports."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T12:09:02.371Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/480a1490c595a242f27493a4544b3efb21b29f6a"
},
{
"url": "https://git.kernel.org/stable/c/ab0b5e92fc36ee82c1bd01fe896d0f775ed5de41"
},
{
"url": "https://git.kernel.org/stable/c/282aba56713bbc58155716b55ca7222b2d9cf3c8"
},
{
"url": "https://git.kernel.org/stable/c/c4dc012b027c9eb101583011089dea14d744e314"
},
{
"url": "https://git.kernel.org/stable/c/e0ed5a36fb3ab9e7b9ee45cd17f09f6d5f594360"
},
{
"url": "https://git.kernel.org/stable/c/d67dde02049e632ba58d3c44a164a74b6a737154"
},
{
"url": "https://git.kernel.org/stable/c/6a5da3fa80affc948923f20a4e086177f505e86e"
},
{
"url": "https://git.kernel.org/stable/c/217d47255a2ec8b246f2725f5db9ac3f1d4109d7"
},
{
"url": "https://git.kernel.org/stable/c/ef592bf2232a2daa9fffa8881881fc9957ea56e9"
},
{
"url": "https://git.kernel.org/stable/c/ece3b981bb6620e47fac826a2156c090b1a936a0"
},
{
"url": "https://git.kernel.org/stable/c/98e9d5e33bda8db875cc1a4fe99c192658e45ab6"
},
{
"url": "https://git.kernel.org/stable/c/d2c04f20ccc6c0d219e6d3038bab45bc66a178ad"
},
{
"url": "https://git.kernel.org/stable/c/05a1fc5efdd8560f34a3af39c9cf1e1526cc3ddf"
}
],
"title": "ALSA: usb-audio: Fix potential overflow of PCM transfer buffer",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-40269",
"datePublished": "2025-12-06T21:50:50.229Z",
"dateReserved": "2025-04-16T07:20:57.183Z",
"dateUpdated": "2026-08-05T12:09:02.371Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…