SB20250226244 - Use-after-free in Linux kernel block
Published: February 26, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250226244
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-2022-49411)
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_link_bfqg() 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/075a53b78b815301f8d3dd1ee2cd99554e34f0dd
- https://git.kernel.org/stable/c/51f724bffa3403a5236597e6b75df7329c1ec6e9
- https://git.kernel.org/stable/c/6ee0868b0c3ccead5907685fcdcdd0c08dfe4b0b
- https://git.kernel.org/stable/c/7781c38552e6cc54ed8e9040279561340516b881
- https://git.kernel.org/stable/c/97bd6c56bdcb41079e488e31df56809e3b2ce628
- https://git.kernel.org/stable/c/ccddf8cd411c1800863ed357064e56ceffd356bb
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.198