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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
ad5ff3db53c68c2f12936bc74ea5dfe0af943592 to < f43eea8ae0102ea198da211ef7f5ce83725ecf19affectedad5ff3db53c68c2f12936bc74ea5dfe0af943592 to < 5487871b2b56c19d26936ed6fdc62652b30941dfaffectedad5ff3db53c68c2f12936bc74ea5dfe0af943592 to < 5443c027ec16afa55b1b8a3e7a1ab2ea3c77767aaffectedad5ff3db53c68c2f12936bc74ea5dfe0af943592 to < 07cf6320f40ea2ccfad63728cff34ecb309d03daaffectedad5ff3db53c68c2f12936bc74ea5dfe0af943592 to < 15c3eb8916e7db01cb246d04a1fe6f0fdc065b0caffectedad5ff3db53c68c2f12936bc74ea5dfe0af943592 to < 0baadb0eece2c4d939db10d3c323b4652ac79a58affectedad5ff3db53c68c2f12936bc74ea5dfe0af943592 to < 3bb7db43e32190c973d4019037cedb7895920184affectedad5ff3db53c68c2f12936bc74ea5dfe0af943592 to < 9063d7e2615f4a7ab321de6b520e23d370e58816affected
Linux Linux
Default version status: affected
3.4affected0 to < 3.4unaffected5.10.253 to ≤ 5.10.*unaffected5.15.203 to ≤ 5.15.*unaffected6.1.169 to ≤ 6.1.*unaffected6.6.130 to ≤ 6.6.*unaffected6.12.77 to ≤ 6.12.*unaffected6.18.18 to ≤ 6.18.*unaffected6.19.8 to ≤ 6.19.*unaffected7.0 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/f43eea8ae0102ea198da211ef7f5ce83725ecf19 ↗
- https://git.kernel.org/stable/c/5487871b2b56c19d26936ed6fdc62652b30941df ↗
- https://git.kernel.org/stable/c/5443c027ec16afa55b1b8a3e7a1ab2ea3c77767a ↗
- https://git.kernel.org/stable/c/07cf6320f40ea2ccfad63728cff34ecb309d03da ↗
- https://git.kernel.org/stable/c/15c3eb8916e7db01cb246d04a1fe6f0fdc065b0c ↗
- https://git.kernel.org/stable/c/0baadb0eece2c4d939db10d3c323b4652ac79a58 ↗
- https://git.kernel.org/stable/c/3bb7db43e32190c973d4019037cedb7895920184 ↗
- https://git.kernel.org/stable/c/9063d7e2615f4a7ab321de6b520e23d370e58816 ↗
- https://www.qualys.com/2026/03/10/crack-armor.txt ↗