Concurrency Issue in Linux Kernel Affecting Task Management

CVE-2026-99269

What is CVE-2026-99269?

A concurrency issue was identified in the Linux Kernel's task management system, where a task could be found on a non-local Dispatch Queue (DSQ) while the CPU that dispatched it was still processing operations. This could lead to unexpected behavior as the DSQ could concurrently operate on the task, posing a potential risk to system stability. The vulnerability has been addressed by ensuring that operations on tasks within DSQs wait for the dispatching process to finish, preventing interference during task switching and managing system resources more effectively.

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