CVE-2026-68199

high

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.

References

https://git.kernel.org/stable/c/f480d9910fcfe326db3a6281df80e83af347193e

https://git.kernel.org/stable/c/d4558c140782180e2c80a7588a4af9f8675adfc4

https://git.kernel.org/stable/c/cec0a487cf38ac1f9bca240ffe8a94c5014b72f2

https://git.kernel.org/stable/c/c8e3ca7954d8233fbc54bd370c1827670f43c538

https://git.kernel.org/stable/c/67bc9af4f41f2bdba20404fbd753b2a1bd6dd352

https://git.kernel.org/stable/c/5a65fd4722416061698b0a3277222381efbc4882

https://git.kernel.org/stable/c/58c6c8dc2e022e1b4f3dc58725a1ca49ff470f9c

https://git.kernel.org/stable/c/44126b6994eeb28f2103b638e698f40a1244f327

Details

Source: Mitre, NVD

Published: 2026-08-10

Updated: 2026-08-19

Risk Information

CVSS v2

Base Score: 8.3

Vector: CVSS2#AV:A/AC:L/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8.8

Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00209