Improper locking in Linux kernel - CVE-2022-50851
Published: December 30, 2025 / Updated: December 30, 2025
Vulnerability identifier: #VU120819
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-2022-50851
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 DEFINE_IDA(), vhost_vdpa_remove_as(), vhost_vdpa_unlocked_ioctl(), vhost_vdpa_pa_unmap(), vhost_vdpa_va_unmap() and vhost_vdpa_unmap() functions in drivers/vhost/vdpa.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2022-50851
Install update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/26b7400c89b81e2f6de4f224ba1fdf06f293de31
- https://git.kernel.org/stable/c/8b258a31c2e8d4d4e42be70a7c6ca35a5afbff0d
- https://git.kernel.org/stable/c/e794070af224ade46db368271896b2685ff4f96b
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.19
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2