Race condition in Linux kernel - CVE-2026-89945
Published: September 17, 2026
Vulnerability identifier: #VU150340
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89945
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause improper hardware register operations.
The vulnerability exists due to a race condition in the cs35l34 runtime suspend handler when runtime power management suspends the codec while critical fault IRQs remain unmasked. A local user can trigger runtime power management to cause improper hardware register operations.
Affected software
Linux kernel
How to mitigate CVE-2026-89945
Install security update from vendor's repository.
External References
- https://git.kernel.org/stable/c/07a86575edc308e66b6c8873ed4a93ef3a063e55
- https://git.kernel.org/stable/c/3be8380fb14d602cd833e5852e6d83c1e7eb1ceb
- https://git.kernel.org/stable/c/4105a4c0678b2808fc8046b60321b4f1cc7dae75
- https://git.kernel.org/stable/c/4fe8a91a9266f1321c2d31ce67940a4e8b93559e
- https://git.kernel.org/stable/c/5a4fe7a87841af23ba80bae31b80355b16926cf4
- https://git.kernel.org/stable/c/5b063739619990d5de0c94c85d6e5be14e7cbdfe
- https://git.kernel.org/stable/c/96982734e765c13c3db02067e1d5784682085f5c
- https://git.kernel.org/stable/c/f4bfd755c52dfa7584e6c9374206b71b8895c997