Linux Kernel Display Driver Vulnerability Affecting AMD Graphics

CVE-2025-21819

Summary

A vulnerability in the Linux kernel has been identified in the AMD display driver, specifically relating to the handling of the HW lock manager for panel self-refresh (PSR1) functionality. This vulnerability leads to potential system hangs when connecting multiple embedded DisplayPort (eDP) panels, disrupting system stability. Developers and system administrators are advised to apply relevant patches and updates to mitigate this issue and ensure smoother operation of systems utilizing AMD graphics components.

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