Linux Kernel Vulnerability in Task Reenqueuing Mechanism by Vendor

CVE-2026-98864

What is CVE-2026-98864?

A task scheduling vulnerability in the Linux Kernel allows for potential mishandling of task states during the reenqueuing process. Specifically, tasks may remain in a Dispatch Queue (DSQ) while still in the SCX_OPSS_DISPATCHING state, which can lead to improper state management when attempting to reenqueue tasks. This occurs due to a bug in the scheduling operations that fail to properly sync task state changes during high-frequency dispatch events, risking task starvation or incorrect task scheduling behaviors. It is recommended to wait for the dispatching state to clear before executing reenqueue operations to ensure proper functionality in task management.

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