CVE-2026-99252

A flaw was found in the Linux kernel's io_uring subsystem. A local user can trigger a Denial of Service (DoS) condition due to missing preemption protection during internal queue updates. When a lower-priority task updating a queue is interrupted by a higher-priority task on the same processor core, the higher-priority task enters an endless retry loop. This issue can stall the processor and cause the system to become unresponsive.

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.