GHSA-5V22-VQG5-VRR8
Vulnerability from github – Published: 2026-09-04 18:31 – Updated: 2026-09-14 15:32In the Linux kernel, the following vulnerability has been resolved:
selinux: reject an unclaimed class value in security_get_classes()
security_get_classes() sizes an array by p_classes.nprim and fills it at value - 1, so a class value the policy never defines leaves a NULL. sel_make_classes() passes every entry to sel_make_dir(), reaching the same d_alloc_name() dereference as the permission array. The class symbol table is allowed to be sparse (policydb_class_isvalid() exists to absorb that), but this getter builds its own array straight from the hash table and has no such predicate.
Fail the lookup when a value went unclaimed instead of handing out the NULL. Conforming policies define every class they declare and are unaffected.
{
"affected": [],
"aliases": [
"CVE-2026-80912"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-04T18:18:01Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: reject an unclaimed class value in security_get_classes()\n\nsecurity_get_classes() sizes an array by p_classes.nprim and fills it at\nvalue - 1, so a class value the policy never defines leaves a NULL.\nsel_make_classes() passes every entry to sel_make_dir(), reaching the same\nd_alloc_name() dereference as the permission array. The class symbol table\nis allowed to be sparse (policydb_class_isvalid() exists to absorb that),\nbut this getter builds its own array straight from the hash table and has\nno such predicate.\n\nFail the lookup when a value went unclaimed instead of handing out the\nNULL. Conforming policies define every class they declare and are\nunaffected.",
"id": "GHSA-5v22-vqg5-vrr8",
"modified": "2026-09-14T15:32:15Z",
"published": "2026-09-04T18:31:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80912"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/099869e9343a5f8c22b58497f074b34f63cbf856"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/22b05fec62c0fe9864cfceb52f7d0f3a34d9b1dd"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3480c081c23d559fd9a6921b76955664f2e95153"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/841aea4d5a25e16273d04cd07a74142b4687e03b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d2e7f7035d6f407119ba5467f7218cc4370844fc"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d8a10899ea3c84b80de72ca8ee9039e9a5156c9a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e0285bb152211c00900136b66d4b420c14a59094"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f38a71868888285efc9c0ab5b032e23919c5a0a1"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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