Description
In the Linux kernel, the following vulnerability has been resolved: wifi: wcn36xx: fix heap overflow from oversized firmware HAL response The firmware response dispatcher copies all synchronous HAL responses into the 4096-byte hal_buf without validating the response length. A response exceeding WCN36XX_HAL_BUF_SIZE causes a heap buffer overflow with firmware-controlled content. Add a bounds check on the response length.
References8
- git.kernel.org/stable/c/15545ee71301e82d26d9a31b407ed0019eb62a60
- git.kernel.org/stable/c/18813b90032bfaafb225906a4d2b51be4dfc02c3
- git.kernel.org/stable/c/1b5d8a248c3afa640bcc99fa95abcd1e36f3ee18
- git.kernel.org/stable/c/7acc1995bdcfdd82b2dd0dc735b1a4b076ae88a0
- git.kernel.org/stable/c/88a240d86d3d64521f9194abe185ac71cc74d0bd
- git.kernel.org/stable/c/b80c4b5268c297b0503f65ef18038327e2119ad1
- git.kernel.org/stable/c/cfc67aee0c83e7f5d43a1dad3e25c789e9cc1d92
- git.kernel.org/stable/c/dae9cadf0925f1cbfb71306d60490890df3870a6
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
- 1% percentile: 45 · as of 11 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.