CVE-2026-98219

A flaw was found in the Linux kernel's sched_ext subsystem. A local attacker could exploit a race condition during scheduler initialization to cause a denial of service (DoS) or potentially escalate privileges. When an error is triggered during the enablement of an extensible scheduler, the kernel fails to tear it down cleanly, resulting in a use-after-free memory corruption when the scheduler is unregistered while still in use.

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.