SB20251230268 - Improper locking in Linux kernel ipv6
Published: December 30, 2025 Updated: December 30, 2025
Security Bulletin ID
SB20251230268
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper locking (CVE-ID: CVE-2022-50816)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the ipip6_tunnel_bind_dev() function in net/ipv6/sit.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/2bab6fa449d16af36d9c9518865f783a15f446c7
- https://git.kernel.org/stable/c/44affe7ede596f078c4f2f41e0d160266ccda818
- https://git.kernel.org/stable/c/78297d513157a31fd629626fe4cbb85a7dcbb94a
- https://git.kernel.org/stable/c/ad3f1d9bf162c487d23df684852597961b745cae
- https://git.kernel.org/stable/c/af51fc23a03f02b0c6df09ab0d60f23794436052
- https://git.kernel.org/stable/c/ccd94bd4939690e24d13e23814bce7ed853a09f3
- https://git.kernel.org/stable/c/d89d7ff01235f218dad37de84457717f699dee79
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.305
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.272
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.153
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.77
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.231
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1