CVE-2026-80757 (GCVE-0-2026-80757)
Vulnerability from cvelistv5
Published
2026-09-03 08:26
Modified
2026-09-03 08:26
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
selinux: reject a class permission count below its inherited common
security_get_permissions() maps an inherited common's permissions into
an array sized by the class's own permissions.nprim, but class_read()
takes that nprim verbatim from the policy image and never checks that it
covers the common. A class that inherits a common of N permissions while
declaring a smaller nprim is accepted, and on load the common's
permissions are written past the class-sized array -- an out-of-bounds
heap write.
Reject a class whose permission count is below its inherited common's.
Well-formed policies, where the class count already includes the
inherited permissions, are unaffected.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 Version: 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 Version: 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 Version: 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 Version: 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 Version: 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 Version: 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 Version: 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 |
||
{
"containers": {
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"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.23"
},
{
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"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.266",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.217",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.184",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.153",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.105",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.46",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.10",
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},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
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"nodes": [
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"vulnerable": true
},
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}
],
"negate": false,
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],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: reject a class permission count below its inherited common\n\nsecurity_get_permissions() maps an inherited common\u0027s permissions into\nan array sized by the class\u0027s own permissions.nprim, but class_read()\ntakes that nprim verbatim from the policy image and never checks that it\ncovers the common. A class that inherits a common of N permissions while\ndeclaring a smaller nprim is accepted, and on load the common\u0027s\npermissions are written past the class-sized array -- an out-of-bounds\nheap write.\n\nReject a class whose permission count is below its inherited common\u0027s.\nWell-formed policies, where the class count already includes the\ninherited permissions, are unaffected."
}
],
"providerMetadata": {
"dateUpdated": "2026-09-03T08:26:35.005Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/2002ff745db64ac83ee1bb9ff78196d2d68bfdb3"
},
{
"url": "https://git.kernel.org/stable/c/38d91446630a20ce8c2a981810deea81fd61a3b5"
},
{
"url": "https://git.kernel.org/stable/c/638213f2e6ea52c06a25861616781338d154db35"
},
{
"url": "https://git.kernel.org/stable/c/2b7ffd7921fcbfe408fb7b372e47454e45b1e6a7"
},
{
"url": "https://git.kernel.org/stable/c/a63011c009ea79439b800a05602b880eb4adbb05"
},
{
"url": "https://git.kernel.org/stable/c/acd5b09be98fd38b7392307880156fb0452a7276"
},
{
"url": "https://git.kernel.org/stable/c/1b995966c3ae5244751bdaee9bfe7e17567d4fbe"
},
{
"url": "https://git.kernel.org/stable/c/9a82dcd98b6e6e11cfd162410967951f12152528"
}
],
"title": "selinux: reject a class permission count below its inherited common",
"x_generator": {
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}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-80757",
"datePublished": "2026-09-03T08:26:35.005Z",
"dateReserved": "2026-08-26T14:34:25.791Z",
"dateUpdated": "2026-09-03T08:26:35.005Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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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.
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