SB2025062071 - Improper locking in Linux kernel btrfs
Published: June 20, 2025 Updated: June 21, 2025
Security Bulletin ID
SB2025062071
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-2022-50090)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the btrfs_check_zoned_mode() function in fs/btrfs/zoned.c, within the btrfs_run_delalloc_range(), btrfs_split_delalloc_extent() and btrfs_merge_delalloc_extent() functions in fs/btrfs/inode.c, within the find_lock_delalloc_range() function in fs/btrfs/extent_io.c, within the btrfs_init_fs_info() function in fs/btrfs/disk-io.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/096e8eb9639b342bc35f9b741cf05e26d0106e92
- https://git.kernel.org/stable/c/1aa262c1d056551dd1246115af8b7e351184deae
- https://git.kernel.org/stable/c/6cb4b96df97082a54634ba02196516919cda228c
- https://git.kernel.org/stable/c/f7b12a62f008a3041f42f2426983e59a6a0a3c59
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.64
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.18
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0