#VU111595 Improper locking in Linux kernel - CVE-2022-50089
Published: June 20, 2025 / Updated: June 21, 2025
Vulnerability identifier: #VU111595
Vulnerability risk: Low
CVSSv4.0: 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-2022-50089
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
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 repository.
External links
- 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