CVE-2026-98942

A flaw was found in the Linux kernel's sched_ext (extensible scheduler) subsystem. Due to a race condition, internal core-ID mapping tables were exposed before being fully initialized and were modified without adequate synchronization. A local attacker could exploit this timing issue during scheduler updates to read uninitialized kernel memory or inconsistent state, potentially leading to kernel information disclosure or a denial of service (DoS).

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.