Improper locking in Linux kernel - CVE-2022-50771
Published: December 26, 2025 / Updated: December 31, 2025
Vulnerability identifier: #VU120501
CSH Severity: Low
CVSS v4: 6.8 [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]
CVE-ID: CVE-2022-50771
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the rcu_force_quiescent_state() function in kernel/rcu/tree.c. A local user can perform a denial of service (DoS) attack.
Affected software
Linux kernel
How to mitigate CVE-2022-50771
Install update from vendor's repository.
Linux kernel - addressed in versions 5.4.229, 5.10.163, 5.15.86, 6.0.16, 6.1.2, 6.2
External References
- https://git.kernel.org/stable/c/3d92527a919edd1aa381bdd6c299dd75a8167396
- https://git.kernel.org/stable/c/5a52380b8193cf8be6c4a6b94b86ef64ed80c0dc
- https://git.kernel.org/stable/c/80a3e7ab477b3655615fc1627c88c248d4ad28d9
- https://git.kernel.org/stable/c/98a5b1265a36e9d843a51ddd6c9fa02da50d2c57
- https://git.kernel.org/stable/c/a74af9b937707b42c3fd041aae1ed4ce2f337307
- https://git.kernel.org/stable/c/ceb1c8c9b8aa9199da46a0f29d2d5f08d9b44c15
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.163
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.86
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.229
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2