GHSA-Q3G3-69GG-F28J
Vulnerability from github – Published: 2026-09-03 15:32 – Updated: 2026-09-03 15:32In 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.
{
"affected": [],
"aliases": [
"CVE-2026-80757"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-03T13:06:15Z",
"severity": null
},
"details": "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.",
"id": "GHSA-q3g3-69gg-f28j",
"modified": "2026-09-03T15:32:16Z",
"published": "2026-09-03T15:32:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80757"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1b995966c3ae5244751bdaee9bfe7e17567d4fbe"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2002ff745db64ac83ee1bb9ff78196d2d68bfdb3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2b7ffd7921fcbfe408fb7b372e47454e45b1e6a7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/38d91446630a20ce8c2a981810deea81fd61a3b5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/638213f2e6ea52c06a25861616781338d154db35"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9a82dcd98b6e6e11cfd162410967951f12152528"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a63011c009ea79439b800a05602b880eb4adbb05"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/acd5b09be98fd38b7392307880156fb0452a7276"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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