SB2026011457 - Improper locking in Linux kernel sched
Published: January 14, 2026
Security Bulletin ID
SB2026011457
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-2025-68780)
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 website.
References
- 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