SB2025100537 - Improper locking in Linux kernel hwtracing coresight driver
Published: October 5, 2025 Updated: October 27, 2025
Security Bulletin ID
SB2025100537
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper locking (CVE-ID: CVE-2022-50491)
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.
Remediation
Install update from vendor's website.
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