CVE-2026-72460 (GCVE-0-2026-72460)
Vulnerability from cvelistv5
Published
2026-08-15 05:57
Modified
2026-08-17 05:44
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
apparmor: check label build before no_new_privs test
aa_change_profile() builds a replacement label with
fn_label_build_in_scope() before the no_new_privs subset check. The build
helper can fail and return NULL or an ERR_PTR, but the result was passed
to aa_label_is_unconfined_subset() before the existing IS_ERR_OR_NULL()
check.
Reuse the existing target-label build failure handling immediately after
the build. This preserves the current audit handling while preventing the
subset helper from dereferencing an invalid label.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: e00b02bb6ac2a1893227ce8014b649028d6425d2 Version: e00b02bb6ac2a1893227ce8014b649028d6425d2 Version: e00b02bb6ac2a1893227ce8014b649028d6425d2 Version: e00b02bb6ac2a1893227ce8014b649028d6425d2 Version: e00b02bb6ac2a1893227ce8014b649028d6425d2 Version: e00b02bb6ac2a1893227ce8014b649028d6425d2 Version: e00b02bb6ac2a1893227ce8014b649028d6425d2 Version: e00b02bb6ac2a1893227ce8014b649028d6425d2 |
||
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"security/apparmor/domain.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "a29f06db44b4c94597ded58f639eed3e21781ac3",
"status": "affected",
"version": "e00b02bb6ac2a1893227ce8014b649028d6425d2",
"versionType": "git"
},
{
"lessThan": "cfc224866530a6842b6c2d2d30ef6a9b0e64bb9c",
"status": "affected",
"version": "e00b02bb6ac2a1893227ce8014b649028d6425d2",
"versionType": "git"
},
{
"lessThan": "31cb109db5e6322ed22304fd5c0dedbaa438d6d3",
"status": "affected",
"version": "e00b02bb6ac2a1893227ce8014b649028d6425d2",
"versionType": "git"
},
{
"lessThan": "b7c45c05a396a017c49ac7949de240a0dfc0ac4e",
"status": "affected",
"version": "e00b02bb6ac2a1893227ce8014b649028d6425d2",
"versionType": "git"
},
{
"lessThan": "d84bb195d208adbf77f012ca2a96e11163f6def1",
"status": "affected",
"version": "e00b02bb6ac2a1893227ce8014b649028d6425d2",
"versionType": "git"
},
{
"lessThan": "d82160132345688a09cbaa648cfdd16bb32e8ea2",
"status": "affected",
"version": "e00b02bb6ac2a1893227ce8014b649028d6425d2",
"versionType": "git"
},
{
"lessThan": "ec926b2a351eeeb31e6c9aee02e0c32f94b5588f",
"status": "affected",
"version": "e00b02bb6ac2a1893227ce8014b649028d6425d2",
"versionType": "git"
},
{
"lessThan": "a58cafd38b46fb1a2220e2fbbcfe291ea75fa147",
"status": "affected",
"version": "e00b02bb6ac2a1893227ce8014b649028d6425d2",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"security/apparmor/domain.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.13"
},
{
"lessThan": "4.13",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.261",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.212",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.178",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.145",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.97",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.40",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.5",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.261",
"versionStartIncluding": "4.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.212",
"versionStartIncluding": "4.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.178",
"versionStartIncluding": "4.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.145",
"versionStartIncluding": "4.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.97",
"versionStartIncluding": "4.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.40",
"versionStartIncluding": "4.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.1.5",
"versionStartIncluding": "4.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.2",
"versionStartIncluding": "4.13",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\napparmor: check label build before no_new_privs test\n\naa_change_profile() builds a replacement label with\nfn_label_build_in_scope() before the no_new_privs subset check. The build\nhelper can fail and return NULL or an ERR_PTR, but the result was passed\nto aa_label_is_unconfined_subset() before the existing IS_ERR_OR_NULL()\ncheck.\n\nReuse the existing target-label build failure handling immediately after\nthe build. This preserves the current audit handling while preventing the\nsubset helper from dereferencing an invalid label."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.1,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The flaw is reached only through a local write to /proc/self/attr/current or /proc/self/attr/exec (changeprofile/exec), which flows through proc_pid_attr_write and the AppArmor setprocattr hook into aa_change_profile(); there is no network, adjacent-radio, or physical-device entry point.\nAC:L - Once a confined task with policy-granted changeprofile and PR_SET_NO_NEW_PRIVS calls the interface, fn_label_build_in_scope() failure (e.g., GFP_KERNEL ENOMEM from memory pressure) is reliably attacker-influenced and immediately triggers the invalid dereference without races or victim-dependent timing.\nPR:L - Exploitation requires a local unprivileged process confined by AppArmor whose policy permits changeprofile/onexec to the requested target; prctl(PR_SET_NO_NEW_PRIVS) is self-settable and does not require real root or init-namespace capabilities.\nUI:N - The attacker triggers the bug by writing to their own process attribute file; no separate victim action such as opening a file, mounting a filesystem, or clicking a link is required.\nS:U - The vulnerable AppArmor kernel code and the resulting kernel oops/panic affect the same OS security authority; this is not a VM escape, IOMMU bypass, or cross-authority sandbox breakout as defined by CVSS scope.\nC:H - aa_label_is_unconfined_subset() dereferences the failed label pointer (NULL or ERR_PTR) to read aa_label fields such as size/vec; ERR_PTR values are non-NULL kernel-range addresses, so the fault path includes an invalid kernel-memory read that can leak data before oops under worst-case layout.\nI:N - The bug performs invalid reads through a bad label pointer and does not write memory, corrupt adjacent objects, or complete an unauthorized aa_replace_current_label(); failed builds are still rejected later, so integrity impact is limited to the read-side fault rather than modification or code execution.\nA:H - Dereferencing NULL or ERR_PTR labels in aa_label_is_unconfined_subset() causes a kernel BUG/oops/panic, yielding host-wide denial of service on AppArmor-enabled systems and repeatable crashes from the same procattr write."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-17T05:44:26.306Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/a29f06db44b4c94597ded58f639eed3e21781ac3"
},
{
"url": "https://git.kernel.org/stable/c/cfc224866530a6842b6c2d2d30ef6a9b0e64bb9c"
},
{
"url": "https://git.kernel.org/stable/c/31cb109db5e6322ed22304fd5c0dedbaa438d6d3"
},
{
"url": "https://git.kernel.org/stable/c/b7c45c05a396a017c49ac7949de240a0dfc0ac4e"
},
{
"url": "https://git.kernel.org/stable/c/d84bb195d208adbf77f012ca2a96e11163f6def1"
},
{
"url": "https://git.kernel.org/stable/c/d82160132345688a09cbaa648cfdd16bb32e8ea2"
},
{
"url": "https://git.kernel.org/stable/c/ec926b2a351eeeb31e6c9aee02e0c32f94b5588f"
},
{
"url": "https://git.kernel.org/stable/c/a58cafd38b46fb1a2220e2fbbcfe291ea75fa147"
}
],
"title": "apparmor: check label build before no_new_privs test",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-72460",
"datePublished": "2026-08-15T05:57:05.404Z",
"dateReserved": "2026-08-09T03:40:39.932Z",
"dateUpdated": "2026-08-17T05:44:26.306Z",
"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…