Improper locking in Linux kernel - CVE-2025-40263
Published: December 4, 2025
Vulnerability identifier: #VU119187
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-40263
CWE-ID: CWE-667
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 user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the cros_ec_keyb_work() function in drivers/input/keyboard/cros_ec_keyb.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2025-40263
Install update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/2d251c15c27e2dd16d6318425d2f7260cbd47d39
- https://git.kernel.org/stable/c/6d81068685154535af06163eb585d6d9663ec7ec
- https://git.kernel.org/stable/c/7bfd959187f2c7584bb43280bbc7b2846e7a5085
- https://git.kernel.org/stable/c/9cf59f4724a9ee06ebb06c76b8678ac322e850b7
- https://git.kernel.org/stable/c/e08969c4d65ac31297fcb4d31d4808c789152f68