SB2026020532 - Improper locking in Linux kernel btrfs
Published: February 5, 2026
Security Bulletin ID
SB2026020532
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-2025-71194)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the is_transaction_blocked(), start_transaction() and btrfs_wait_for_commit() functions in fs/btrfs/transaction.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.