CVE-2026-80912

CVE CVE-2026-80912EUVD EUVD-2026-71615Published 2026-09-04T17:19:23.000Z

What the advisory describes

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.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 <d8a10899ea3c84b80de72ca8ee9039e9a5156c9a; 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 <e0285bb152211c00900136b66d4b420c14a59094; patch: 0; 2.6.23; patch: 7.2; patch: 6.6.153; patch: 6.18.46; patch: 6.12.105; 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 <22b05fec62c0fe9864cfceb52f7d0f3a34d9b1dd; patch: 7.1.10; 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 <841aea4d5a25e16273d04cd07a74142b4687e03b; 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 <099869e9343a5f8c22b58497f074b34f63cbf856

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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