SB2025092380 - Improper locking in Linux kernel btrfs
Published: September 23, 2025
Security Bulletin ID
SB2025092380
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-2025-39884)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the btrfs_del_inode_from_root() function in fs/btrfs/inode.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.