SB2025050466 - Improper locking in Linux kernel ext4
Published: May 4, 2025 Updated: May 10, 2025
Security Bulletin ID
SB2025050466
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-2023-53137)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the ext4_rename() and ext4_journal_stop() functions in fs/ext4/namei.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/0813299c586b175d7edb25f56412c54b812d0379
- https://git.kernel.org/stable/c/0c440f14558bfacd22c6935ae1fd4b2a09e96b5d
- https://git.kernel.org/stable/c/291cd19d107e197306869cb3237c1bba62d13182
- https://git.kernel.org/stable/c/8dac5a63cf79707b547ea3d425fead5f4482198f
- https://git.kernel.org/stable/c/b0bb13612292ca90fa4c2a7e425375649bc50d3e
- https://git.kernel.org/stable/c/c50fc503ee1b97f12c98e26afc39fdaebebcf04f
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.103