SB2025091723 - Improper locking in Linux kernel ext2
Published: September 17, 2025 Updated: September 22, 2025
Security Bulletin ID
SB2025091723
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-2023-53323)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the ext2_setsize() function in fs/ext2/inode.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/5cee8bfb8cbd99c97aff85d2bf066b6a496e13ab
- https://git.kernel.org/stable/c/9e54fd14bd143c261e52fde74355e85e9526c58c
- https://git.kernel.org/stable/c/fcced95b6ba2a507a83b8b3e0358a8ac16b13e35
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.40
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5