Description
In the Linux kernel, the following vulnerability has been resolved: wifi: ath9k_htc: Abort software beacon handling if disabled A malicious USB device can send a WMI_SWBA_EVENTID event from an ath9k_htc-managed device before beaconing has been enabled. This causes a device-by-zero error in the driver, leading to either a crash or an out of bounds read. Prevent this by aborting the handling in ath9k_htc_swba() if beacons are not enabled.
Affected products
linux: linux kernel; debian: debian linux
References10
- git.kernel.org/stable/c/0281c19074976ec48f0078d50530b406ddae75bc Patch
- git.kernel.org/stable/c/40471b23147c86ea3ed97faee79937c618250bd0 Patch
- git.kernel.org/stable/c/5482ef9875eaa43f0435e14570e1193823de857e Patch
- git.kernel.org/stable/c/5a85c21f812e02cb00ca07007d88acdd42d08c46 Patch
- git.kernel.org/stable/c/7ee3fb6258da8c890a51b514f60d7570dc703605 Patch
- git.kernel.org/stable/c/ac4e317a95a1092b5da5b9918b7118759342641c Patch
- git.kernel.org/stable/c/e5ce9df1d68094d37360dbd9b09289d42fa21e54 Patch
- git.kernel.org/stable/c/ee5ee646385f5846dcbc881389f3c44a197c402a Patch
- lists.debian.org/debian-lts-announce/2025/10/msg00007.html Third Party Advisory
- lists.debian.org/debian-lts-announce/2025/10/msg00008.html Third Party Advisory
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 9 · as of 7 November 2026
- CWE
- CWE-787
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.