SB20250916226 - Improper locking in Linux kernel jbd2
Published: September 16, 2025
Security Bulletin ID
SB20250916226
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-2025-39782)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the jbd2_log_do_checkpoint() function in fs/jbd2/checkpoint.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/26cb9aad94cb1811d8fae115594cc71fa3d91ab0
- https://git.kernel.org/stable/c/3faac5e1d14c63260fd1bf789d96bde3ab3d9e54
- https://git.kernel.org/stable/c/41f40038de62e8306897cf6840791b268996432a
- https://git.kernel.org/stable/c/429d50cbaff45090d52a1ea850d5de8c14881ee7
- https://git.kernel.org/stable/c/84ff98c1ea19acd3f9389e4bb6061364e943f85e
- https://git.kernel.org/stable/c/9d98cf4632258720f18265a058e62fde120c0151
- https://git.kernel.org/stable/c/f683d611518d30334813eecf9a8c687453e2800e
- https://git.kernel.org/stable/c/f7ee8fd689e6d534f9fd2494b9266f7998082e65