Improper locking in Linux kernel - CVE-2025-37921
Published: May 21, 2025 / Updated: May 21, 2025
Vulnerability identifier: #VU109536
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-2025-37921
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 vxlan_vni_delete_group() function in drivers/net/vxlan/vxlan_vnifilter.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2025-37921
Install update from vendor's website.
Sources
- https://git.kernel.org/stable/c/087a9eb9e5978e3ba362e1163691e41097e8ca20
- https://git.kernel.org/stable/c/2d4a121296aa3940d2df9906f955c2b6b4e38bc3
- https://git.kernel.org/stable/c/3576e9a80b6c4381b01ce0cbaa07f5e92d4492ed
- https://git.kernel.org/stable/c/470206205588559e60035fceb5f256640cb45f99
- https://git.kernel.org/stable/c/5cb9e07f84e527974b12e82e2549fa6c0cc6eef0
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.28