Improper locking in Linux kernel - CVE-2022-50764
Published: December 26, 2025 / Updated: December 31, 2025
Vulnerability identifier: #VU120502
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-2022-50764
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 ipip6_rcv(), ipip6_tunnel_xmit(), sit_tunnel_xmit__() and sit_tunnel_xmit() functions in net/ipv6/sit.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2022-50764
Install update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/207501a986831174df09a36a8cb62a28f92f0dc8
- https://git.kernel.org/stable/c/222cc04356984f3f98acfa756a69d4bed7c501ac
- https://git.kernel.org/stable/c/4eed93bb3e57b8cc78d17166a14e40a73276015a
- https://git.kernel.org/stable/c/cb34b7cf17ecf33499c9298943f85af247abc1e9
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.86
- 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