#VU121406 Improper locking in Linux kernel - CVE-2025-68780
Published: January 14, 2026
Vulnerability identifier: #VU121406
Vulnerability risk: Low
CVSSv4.0: 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-2025-68780
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the dec_dl_deadline(), rq_online_dl() and rq_offline_dl() functions in kernel/sched/deadline.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/382748c05e58a9f1935f5a653c352422375566ea
- https://git.kernel.org/stable/c/3ed049fbfb4d75b4e0b8ab54c934f485129d5dc8
- https://git.kernel.org/stable/c/91e448e69aca4bb0ba2e998eb3e555644db7322b
- https://git.kernel.org/stable/c/dbc61834b0412435df21c71410562d933e4eba49
- https://git.kernel.org/stable/c/fb36846cbcc936954f2ad2bffdff13d16c0be08a