Improper locking in Linux kernel - CVE-2026-90143
Published: September 19, 2026
Vulnerability identifier: #VU151334
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90143
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a kernel warning.
The vulnerability exists due to improper locking in kcm_parse_func_strparser() when executing a KCM strparser BPF program. A local user can invoke BPF map operations from the program to cause a kernel warning.
Affected software
Linux kernel
How to mitigate CVE-2026-90143
Install security update from vendor's repository.
External References
- https://git.kernel.org/stable/c/1d26a6e007d46babc7fa76e5a157dccf86cd55c0
- https://git.kernel.org/stable/c/21526f8a191a3c50622b8c10bd927870d780eae4
- https://git.kernel.org/stable/c/292846223eaddba890e40699d2ab82ee5671798c
- https://git.kernel.org/stable/c/37108861cf7bd909d4a372069bcd61c8f489e232
- https://git.kernel.org/stable/c/3c70d27e792a28bca650ddd8a9aa0fe3591ffec5
- https://git.kernel.org/stable/c/b0346dd64e4905291cc9c479f2e6cf1884ced4e6
- https://git.kernel.org/stable/c/b0e94ea63dbdcbfec9beb819cd5f8fa584809ef2
- https://git.kernel.org/stable/c/f392affef3c9ce64dfdde794df0579e0a7793440