Resource exhaustion in Linux kernel - CVE-2026-98087
Published: September 28, 2026
Vulnerability identifier: #VU152367
CSH Severity: Low
CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-98087
CWE-ID: CWE-400
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper handling of migration-disabled tasks in the Linux kernel RT and deadline scheduler push-candidate selection logic when selecting tasks for migration during real-time or deadline load balancing. A local user can cause migration-disabled real-time or deadline tasks to remain on pushable task lists, triggering repeated unsuccessful push attempts to consume CPU time.
The issue occurs when a migration-disabled task remains at the head of a pushable task list.
Affected software
Linux kernel
How to mitigate CVE-2026-98087
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3