SB20250226307 - Use-after-free in Linux kernel block
Published: February 26, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250226307
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2022-49179)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the bfq_bfqq_move() function in block/bfq-cgroup.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/7507ead1e9d42957c2340f2c4a0e9d00034e3366
- https://git.kernel.org/stable/c/8410f70977734f21b8ed45c37e925d311dfda2e7
- https://git.kernel.org/stable/c/87fdfe8589d43e471dffb4c60f75eeb6f37afc4c
- https://git.kernel.org/stable/c/8f34dea99cd7761156a146a5258a67d045d862f7
- https://git.kernel.org/stable/c/c01fced8d38fbccc82787065229578006f28e020
- https://git.kernel.org/stable/c/c4f5a678add58a8a0e7ee5e038496b376ea6d205
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.189