Linux Kernel Runtime Suspend Deadlock Vulnerability in AMD XDNA Acceleration

A deadlock vulnerability during runtime suspension has been identified in the Linux kernel's AMD XDNA acceleration component. This issue arises because the runtime suspend callback drains the job workqueue before suspending the device. If a job is still running and calls 'pm_runtime_resume_and_get()', it can create a deadlock with the suspend process. The vulnerability affects the Linux kernel stable tree.

Impact

Exploitation of this vulnerability can lead to a deadlock situation, causing the system to hang and potentially disrupting normal operations.

Remediation

Users can apply the patch available in the Linux kernel stable tree to address this vulnerability.