SB2025062086 - Improper locking in Linux kernel btrfs
Published: June 20, 2025 Updated: June 21, 2025
Security Bulletin ID
SB2025062086
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-2022-50089)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the get_extent_allocation_hint(), cow_file_range() and btrfs_dec_block_group_reservations() functions in fs/btrfs/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/9535ec371d741fa037e37eddc0a5b25ba82d0027
- https://git.kernel.org/stable/c/9ce7466f372d83054c7494f6b3e4b9abaf3f0355
- https://git.kernel.org/stable/c/b367f125c80fa838eae49e3b138dc67dfc9f46ef
- https://git.kernel.org/stable/c/e160aa87c87a9c4e0c8d1430235f715a3a91e2cd
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.2