SB20251008104 - Improper locking in Linux kernel mm
Published: October 8, 2025 Updated: October 26, 2025
Security Bulletin ID
SB20251008104
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-2023-53623)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the __del_from_avail_list() and SYSCALL_DEFINE1() functions in mm/swapfile.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/111a79d9b92f0a679fe300ccd3119ae9741f3d54
- https://git.kernel.org/stable/c/4bdf1514b4268d29360ba9e43becdd49955bc7ae
- https://git.kernel.org/stable/c/6fe7d6b992113719e96744d974212df3fcddc76c
- https://git.kernel.org/stable/c/85cc118ce6f1a627901b6db50c9d01f2ad78cdbf
- https://git.kernel.org/stable/c/a55f268abdb74ac5633b75a09fefb58458e9d2a2
- https://git.kernel.org/stable/c/b9927d3a60ca9ed35625470888629c074e687ba0
- https://git.kernel.org/stable/c/e7bba7ddb4318d5ea939c8db747c2c2780ab66f4
- https://git.kernel.org/stable/c/ea8c42b3b6d95ced3a4f555f04686d00ef0bb206
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.178