{"id":"CVE-2026-23269","summary":"apparmor: validate DFA start states are in bounds in unpack_pdb","details":"In the Linux kernel, the following vulnerability has been resolved:\n\napparmor: validate DFA start states are in bounds in unpack_pdb\n\nStart states are read from untrusted data and used as indexes into the\nDFA state tables. The aa_dfa_next() function call in unpack_pdb() will\naccess dfa-\u003etables[YYTD_ID_BASE][start], and if the start state exceeds\nthe number of states in the DFA, this results in an out-of-bound read.\n\n==================================================================\n BUG: KASAN: slab-out-of-bounds in aa_dfa_next+0x2a1/0x360\n Read of size 4 at addr ffff88811956fb90 by task su/1097\n ...\n\nReject policies with out-of-bounds start states during unpacking\nto prevent the issue.","modified":"2026-04-03T11:00:17.605110Z","published":"2026-03-18T17:54:42.988Z","related":["SUSE-SU-2026:0961-1","SUSE-SU-2026:0962-1","SUSE-SU-2026:0984-1","SUSE-SU-2026:1003-1","SUSE-SU-2026:1041-1","SUSE-SU-2026:1077-1","SUSE-SU-2026:1078-1","SUSE-SU-2026:1081-1","SUSE-SU-2026:1131-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23269.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/07cf6320f40ea2ccfad63728cff34ecb309d03da"},{"type":"WEB","url":"https://git.kernel.org/stable/c/0baadb0eece2c4d939db10d3c323b4652ac79a58"},{"type":"WEB","url":"https://git.kernel.org/stable/c/15c3eb8916e7db01cb246d04a1fe6f0fdc065b0c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3bb7db43e32190c973d4019037cedb7895920184"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9063d7e2615f4a7ab321de6b520e23d370e58816"},{"type":"WEB","url":"https://www.qualys.com/2026/03/10/crack-armor.txt"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23269.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23269"},{"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":"ad5ff3db53c68c2f12936bc74ea5dfe0af943592"},{"fixed":"07cf6320f40ea2ccfad63728cff34ecb309d03da"},{"fixed":"15c3eb8916e7db01cb246d04a1fe6f0fdc065b0c"},{"fixed":"0baadb0eece2c4d939db10d3c323b4652ac79a58"},{"fixed":"3bb7db43e32190c973d4019037cedb7895920184"},{"fixed":"9063d7e2615f4a7ab321de6b520e23d370e58816"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23269.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.4.0"},{"fixed":"6.6.130"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.77"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.18"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23269.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"}]}