Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected ad5ff3db53c68c2f12936bc74ea5dfe0af943592 before f43eea8ae0102ea198da211ef7f5ce83725ecf19; affected ad5ff3db53c68c2f12936bc74ea5dfe0af943592 before 5487871b2b56c19d26936ed6fdc62652b30941df; affected ad5ff3db53c68c2f12936bc74ea5dfe0af943592 before 5443c027ec16afa55b1b8a3e7a1ab2ea3c77767a; affected ad5ff3db53c68c2f12936bc74ea5dfe0af943592 before 07cf6320f40ea2ccfad63728cff34ecb309d03da; affected ad5ff3db53c68c2f12936bc74ea5dfe0af943592 before 15c3eb8916e7db01cb246d04a1fe6f0fdc065b0c; affected ad5ff3db53c68c2f12936bc74ea5dfe0af943592 before 0baadb0eece2c4d939db10d3c323b4652ac79a58; affected ad5ff3db53c68c2f12936bc74ea5dfe0af943592 before 3bb7db43e32190c973d4019037cedb7895920184; affected ad5ff3db53c68c2f12936bc74ea5dfe0af943592 before 9063d7e2615f4a7ab321de6b520e23d370e58816 |
| Linux / Linux | affected 3.4; unaffected 0 before 3.4; unaffected 5.10.253 through 5.10.*; unaffected 5.15.203 through 5.15.*; unaffected 6.1.169 through 6.1.*; unaffected 6.6.130 through 6.6.*; unaffected 6.12.77 through 6.12.*; unaffected 6.18.18 through 6.18.*; unaffected 6.19.8 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.
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