Out-of-bounds write in Linux kernel - CVE-2026-46307
Published: June 10, 2026
Vulnerability identifier: #VU134195
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-46307
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local attacker to cause a denial of service.
The vulnerability exists due to out-of-bounds write in the ath5k driver transmit completion handling in drivers/net/wireless/ath/ath5k/base.c when processing transmit status data. A local attacker can trigger the vulnerable code path to cause a denial of service.
The out-of-bounds write overwrites the adjacent ack_signal member, and the reported effect is negligible.
How to mitigate CVE-2026-46307
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/568173ad9bd0b46cc6cd937dea8791e9b5eefa57
- https://git.kernel.org/stable/c/744c19e266b0d2628c5951439195dcef27eadacf
- https://git.kernel.org/stable/c/83226c71af53fb9b3cad40cb9a9a79f36d68c020
- https://git.kernel.org/stable/c/9dd6aae4bc7bfa11088d928670a3315eae542769
- https://git.kernel.org/stable/c/d6869537013b1f21b292342752d97868b79b5934
- https://git.kernel.org/stable/c/d748603f12baff112caa3ab7d39f50100f010dbd
- https://git.kernel.org/stable/c/e9f1081bc775146156def0dbc821b92f35d56afb
- https://git.kernel.org/stable/c/ecb1c163166759dec004c1fdb9709b8a5992fc8e