Improper locking in Linux kernel - CVE-2022-50491
Published: October 5, 2025 / Updated: October 27, 2025
Vulnerability identifier: #VU116562
CSH Severity: Low
CVSS v4: 6.8 [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]
CVE-ID: CVE-2022-50491
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the cti_write_all_hw_regs(), cti_enable_hw(), cti_cpuhp_enable_hw() and cti_disable_hw() functions in drivers/hwtracing/coresight/coresight-cti-core.c. A local user can perform a denial of service (DoS) attack.
Affected software
Linux kernel
How to mitigate CVE-2022-50491
Install update from vendor's repository.
Linux kernel - update to 5.10.154
External References
- https://git.kernel.org/stable/c/4c365a0c21aaf2b8fcc88de8dc298803288f61ac
- https://git.kernel.org/stable/c/6746eae4bbaddcc16b40efb33dab79210828b3ce
- https://git.kernel.org/stable/c/c51cfba50df8b9e16bfe0e6d4f2f252a4a10063d
- https://git.kernel.org/stable/c/e33ce54cef5d429430e3b1ae5c8ee4f4103c4fdc
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.154