CVE-2026-98418
kernel: sched/core: Avoid false migration warning for proxy donors
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 14, 2026
Updated · October 16, 2026
Description
A flaw was found in the Linux kernel's process scheduler. A local user can cause a Denial of Service (DoS) by initiating lock contention across processor cores with a task that has processor migration disabled. In this scenario, the scheduler incorrectly triggers a kernel warning when moving the blocked task's context during proxy execution, which can crash the system if configured to panic on warnings.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-617 · Reachable Assertion