CVE-2026-23269 - apparmor: validate DFA start states are in bounds in unpack_pdb

CVE-2026-23269 - apparmor: validate DFA start states are in bounds in unpack_pdb

https://cvefeed.io/rssfeed/latest.atom / Wed, 03/18/2026 - 20:07
CVE ID :CVE-2026-23269
Published : March 18, 2026, 6:16 p.m. | 44 minutes ago
Description :In the Linux kernel, the following vulnerability has been resolved: apparmor: validate DFA start states are in bounds in unpack_pdb Start states are read from untrusted data and used as indexes into the DFA state tables. The aa_dfa_next() function call in unpack_pdb() will access dfa->tables[YYTD_ID_BASE][start], and if the start state exceeds the number of states in the DFA, this results in an out-of-bound read. ================================================================== BUG: KASAN: slab-out-of-bounds in aa_dfa_next+0x2a1/0x360 Read of size 4 at addr ffff88811956fb90 by task su/1097 ... Reject policies with out-of-bounds start states during unpacking to prevent the issue.
Severity: 0.0 | NA
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