Tracker / CVE-2026-23269
CVE-2026-23269
High 7.1
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 and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 3.4 → 5.10.253 |
| linux | linux_kernel · 5.11 → 5.15.203 |
| linux | linux_kernel · 5.16 → 6.1.169 |
| linux | linux_kernel · 6.13 → 6.18.18 |
| linux | linux_kernel · 6.19 → 6.19.8 |
| linux | linux_kernel · 6.2 → 6.6.130 |
| linux | linux_kernel · 6.7 → 6.12.77 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.