{"id":"CVE-2026-80912","summary":"selinux: reject an unclaimed class value in security_get_classes()","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.","modified":"2026-09-06T03:47:02.070283593Z","published":"2026-09-04T17:19:23.066Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80912.json","cna_assigner":"Linux"},"references":[{"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/841aea4d5a25e16273d04cd07a74142b4687e03b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d8a10899ea3c84b80de72ca8ee9039e9a5156c9a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e0285bb152211c00900136b66d4b420c14a59094"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80912.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80912"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"55fcf09b3fe4325c9395ebbb0322a547a157ebc7"},{"fixed":"e0285bb152211c00900136b66d4b420c14a59094"},{"fixed":"099869e9343a5f8c22b58497f074b34f63cbf856"},{"fixed":"841aea4d5a25e16273d04cd07a74142b4687e03b"},{"fixed":"d8a10899ea3c84b80de72ca8ee9039e9a5156c9a"},{"fixed":"22b05fec62c0fe9864cfceb52f7d0f3a34d9b1dd"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80912.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.23"},{"fixed":"6.6.153"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.105"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.46"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80912.json"}}],"schema_version":"1.9.0"}