SB20250226249 - Use-after-free in Linux kernel block
Published: February 26, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250226249
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-2022-49377)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the blk_mq_has_sqsched() and blk_mq_get_sq_hctx() functions in block/blk-mq.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/460aa288c5cd0544dcf933a2f0ad0e8c6d2d35ff
- https://git.kernel.org/stable/c/5d05426e2d5fd7df8afc866b78c36b37b00188b7
- https://git.kernel.org/stable/c/70fdd922c7bf8949f8df109cf2635dff64c90392
- https://git.kernel.org/stable/c/b140bac470b4f707cda59c7266214246238661df
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.15