CVE-2026-80912selinux: reject an unclaimed class value in security_get_classes()
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No exploitation reported and no EPSS estimate yet.
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In 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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 before d2e7f7035d6f407119ba5467f7218cc4370844fc; from 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 before f38a71868888285efc9c0ab5b032e23919c5a0a1; from 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 before 3480c081c23d559fd9a6921b76955664f2e95153; from 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 before e0285bb152211c00900136b66d4b420c14a59094; from 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 before 099869e9343a5f8c22b58497f074b34f63cbf856; from 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 before 841aea4d5a25e16273d04cd07a74142b4687e03b; from 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 before d8a10899ea3c84b80de72ca8ee9039e9a5156c9a; 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 builds before 22b05fec62c0fe9864cfceb52f7d0f3a34d9b1dd | CNA record |
References
- https://git.kernel.org/stable/c/d2e7f7035d6f407119ba5467f7218cc4370844fc
- https://git.kernel.org/stable/c/f38a71868888285efc9c0ab5b032e23919c5a0a1
- https://git.kernel.org/stable/c/3480c081c23d559fd9a6921b76955664f2e95153
- https://git.kernel.org/stable/c/e0285bb152211c00900136b66d4b420c14a59094
- https://git.kernel.org/stable/c/099869e9343a5f8c22b58497f074b34f63cbf856
- https://git.kernel.org/stable/c/841aea4d5a25e16273d04cd07a74142b4687e03b
- https://git.kernel.org/stable/c/d8a10899ea3c84b80de72ca8ee9039e9a5156c9a
- https://git.kernel.org/stable/c/22b05fec62c0fe9864cfceb52f7d0f3a34d9b1dd
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.