Potential Suspend Issue in TUXEDO Sirius Gen 1 Due to PCIe Root Port Mismanagement

CVE-2025-21831

Summary

A vulnerability in the Linux kernel related to PCIe ports can cause the TUXEDO Sirius 16 Gen 1 to hang during system wakeup from suspend. This issue arises when specific root ports are placed into a non-responsive power state (D3hot) under certain conditions, particularly with an outdated BIOS. A corresponding patch has been implemented to prevent these root ports from going into D3hot while suspending the system, enhancing wakeup reliability.

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