Description
In the Linux kernel, the following vulnerability has been resolved: wifi: ath6kl: fix OOB access from firmware ADDBA window size aggr_recv_addba_req_evt() logs a debug message when the firmware-supplied win_sz is outside [AGGR_WIN_SZ_MIN, AGGR_WIN_SZ_MAX] but does not return. The out-of-range win_sz is then used in TID_WINDOW_SZ() to compute a kzalloc size and stored in rxtid->hold_q_sz, leading to zero-size or overflowed allocations and subsequent out-of-bounds access. Clean up any previously active aggregation session for the TID first, then return early when win_sz is out of the valid range, instead of proceeding with a broken allocation size.
References8
- git.kernel.org/stable/c/44126b6994eeb28f2103b638e698f40a1244f327
- git.kernel.org/stable/c/58c6c8dc2e022e1b4f3dc58725a1ca49ff470f9c
- git.kernel.org/stable/c/5a65fd4722416061698b0a3277222381efbc4882
- git.kernel.org/stable/c/67bc9af4f41f2bdba20404fbd753b2a1bd6dd352
- git.kernel.org/stable/c/c8e3ca7954d8233fbc54bd370c1827670f43c538
- git.kernel.org/stable/c/cec0a487cf38ac1f9bca240ffe8a94c5014b72f2
- git.kernel.org/stable/c/d4558c140782180e2c80a7588a4af9f8675adfc4
- git.kernel.org/stable/c/f480d9910fcfe326db3a6281df80e83af347193e
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: CNA
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 33 · as of 12 November 2026
- CWE
- CWE-20
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.