{"api_version":"1","generated_at":"2026-09-11T09:22:26+00:00","cve":"CVE-2026-80912","urls":{"html":"https://cve.report/CVE-2026-80912","api":"https://cve.report/api/cve/CVE-2026-80912.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-80912","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80912"},"summary":{"title":"selinux: reject an unclaimed class value in security_get_classes()","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-04 18:18:01","updated_at":"2026-09-04 18:18:01"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/22b05fec62c0fe9864cfceb52f7d0f3a34d9b1dd","name":"https://git.kernel.org/stable/c/22b05fec62c0fe9864cfceb52f7d0f3a34d9b1dd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e0285bb152211c00900136b66d4b420c14a59094","name":"https://git.kernel.org/stable/c/e0285bb152211c00900136b66d4b420c14a59094","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/841aea4d5a25e16273d04cd07a74142b4687e03b","name":"https://git.kernel.org/stable/c/841aea4d5a25e16273d04cd07a74142b4687e03b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d8a10899ea3c84b80de72ca8ee9039e9a5156c9a","name":"https://git.kernel.org/stable/c/d8a10899ea3c84b80de72ca8ee9039e9a5156c9a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/099869e9343a5f8c22b58497f074b34f63cbf856","name":"https://git.kernel.org/stable/c/099869e9343a5f8c22b58497f074b34f63cbf856","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80912","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80912","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 e0285bb152211c00900136b66d4b420c14a59094 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 099869e9343a5f8c22b58497f074b34f63cbf856 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 841aea4d5a25e16273d04cd07a74142b4687e03b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 d8a10899ea3c84b80de72ca8ee9039e9a5156c9a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 22b05fec62c0fe9864cfceb52f7d0f3a34d9b1dd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2.6.23","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 2.6.23 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.153 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.105 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.46 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.10 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"80912","cve":"CVE-2026-80912","epss":"0.001560000","percentile":"0.051070000","score_date":"2026-09-07","updated_at":"2026-09-08 00:05:26"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["security/selinux/ss/services.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"e0285bb152211c00900136b66d4b420c14a59094","status":"affected","version":"55fcf09b3fe4325c9395ebbb0322a547a157ebc7","versionType":"git"},{"lessThan":"099869e9343a5f8c22b58497f074b34f63cbf856","status":"affected","version":"55fcf09b3fe4325c9395ebbb0322a547a157ebc7","versionType":"git"},{"lessThan":"841aea4d5a25e16273d04cd07a74142b4687e03b","status":"affected","version":"55fcf09b3fe4325c9395ebbb0322a547a157ebc7","versionType":"git"},{"lessThan":"d8a10899ea3c84b80de72ca8ee9039e9a5156c9a","status":"affected","version":"55fcf09b3fe4325c9395ebbb0322a547a157ebc7","versionType":"git"},{"lessThan":"22b05fec62c0fe9864cfceb52f7d0f3a34d9b1dd","status":"affected","version":"55fcf09b3fe4325c9395ebbb0322a547a157ebc7","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["security/selinux/ss/services.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.23"},{"lessThan":"2.6.23","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.153","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.105","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.46","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.153","versionStartIncluding":"2.6.23","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.105","versionStartIncluding":"2.6.23","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.46","versionStartIncluding":"2.6.23","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.10","versionStartIncluding":"2.6.23","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"2.6.23","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"providerMetadata":{"dateUpdated":"2026-09-04T17:19:23.066Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/e0285bb152211c00900136b66d4b420c14a59094"},{"url":"https://git.kernel.org/stable/c/099869e9343a5f8c22b58497f074b34f63cbf856"},{"url":"https://git.kernel.org/stable/c/841aea4d5a25e16273d04cd07a74142b4687e03b"},{"url":"https://git.kernel.org/stable/c/d8a10899ea3c84b80de72ca8ee9039e9a5156c9a"},{"url":"https://git.kernel.org/stable/c/22b05fec62c0fe9864cfceb52f7d0f3a34d9b1dd"}],"title":"selinux: reject an unclaimed class value in security_get_classes()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-80912","datePublished":"2026-09-04T17:19:23.066Z","dateReserved":"2026-08-26T14:34:25.801Z","dateUpdated":"2026-09-04T17:19:23.066Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-04 18:18:01","lastModifiedDate":"2026-09-04 18:18:01","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"80912","Ordinal":"1","Title":"selinux: reject an unclaimed class value in security_get_classes","CVE":"CVE-2026-80912","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"80912","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"selinux: reject an unclaimed class value in security_get_classes"}]}}}