Improper locking in Linux kernel - CVE-2022-50571
Published: October 23, 2025 / Updated: October 26, 2025
Vulnerability identifier: #VU117596
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2022-50571
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the bitmap_clear_bits(), __load_free_space_cache(), load_free_space_cache() and __btrfs_return_cluster_to_free_space() functions in fs/btrfs/free-space-cache.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2022-50571
Install update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/819a61301275dcc573e3f520be3dc2c8531bee2d
- https://git.kernel.org/stable/c/8a1ae2781dee9fc21ca82db682d37bea4bd074ad
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.17
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1