SB2025022682 - Memory leak in Linux kernel block
Published: February 26, 2025 Updated: May 11, 2025
Security Bulletin ID
SB2025022682
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) Memory leak (CVE-ID: CVE-2022-49394)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the blkiolatency_enable_work_fn(), BLKIOLATENCY(), blkcg_iolatency_throttle(), blkcg_iolatency_done_bio(), blkcg_iolatency_exit(), rcu_read_unlock(), blk_iolatency_init(), iolatency_set_min_lat_nsec(), iolatency_set_limit() and iolatency_pd_offline() functions in block/blk-iolatency.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/515d077ee3085ae343b6bea7fd031f9906645f38
- https://git.kernel.org/stable/c/5b0ff3ebbef791341695b718f8d2870869cf1d01
- https://git.kernel.org/stable/c/77692c02e1517c54f2fd0535f41aa4286ac9f140
- https://git.kernel.org/stable/c/8a177a36da6c54c98b8685d4f914cb3637d53c0d
- https://git.kernel.org/stable/c/968f7a239c590454ffba79c126fbe0e963a0ba78
- https://git.kernel.org/stable/c/a30acbb5dfb7bcc813ad6a18ca31011ac44e5547
- https://git.kernel.org/stable/c/d19fa8f252000d141f9199ca32959c50314e1f05
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.198