Description
In the Linux kernel, the following vulnerability has been resolved: wifi: wcn36xx: fix OOB read from short trigger BA firmware response The firmware response length is only checked against sizeof(*rsp) (20 bytes), but when candidate_cnt >= 1, a 22-byte candidate struct is read at buf + 20 without verifying the response contains it. This causes an out-of-bounds read of stale heap data, corrupting the BA session state. Add validation that the response includes the candidate data.
References6
- git.kernel.org/stable/c/04aba50212f9f274e1a726fb3873b5ce8da2d821
- git.kernel.org/stable/c/af8f0ea1f0a3a5fb5ed2b8fed3f1501d644597ee
- git.kernel.org/stable/c/b5e6f21923ca89d90256e7346301056f6502691e
- git.kernel.org/stable/c/c07aa0534d50361183833e3803204044cf1d0476
- git.kernel.org/stable/c/d0b57bcd0dac6e2c9a3e474ec280e7db0b3edf35
- git.kernel.org/stable/c/d0cafe6ed8d1f6d0097eda31d85f5760d4f359c2
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: 35 · as of 8 November 2026
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.