Improper locking in Linux kernel - CVE-2025-21678
Published: February 4, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU103590
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:U/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-21678
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 gtp_newlink() and gtp_net_exit_batch_rtnl() functions in drivers/net/gtp.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2025-21678
Install update from vendor's website.
Sources
- https://git.kernel.org/stable/c/036f8d814a2cd11ee8ef62b8f3e7ce5dec0ee4f3
- https://git.kernel.org/stable/c/5f1678346109ff3a6d229d33437fcba3cce9209d
- https://git.kernel.org/stable/c/86f73d4ab2f27deeff22ba9336ad103d94f12ac7
- https://git.kernel.org/stable/c/bb11f992f5a475bc68ef959f17a55306f0328495
- https://git.kernel.org/stable/c/c986380c1d5274c4d5e935addc807d6791cc23eb
- https://git.kernel.org/stable/c/eb28fd76c0a08a47b470677c6cef9dd1c60e92d1
- https://git.kernel.org/stable/c/efec287cbac92ac6ee8312a89221854760e13b34
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.127