cve 2023 52485

CVE-2023-52485 is a Linux kernel vulnerability in the AMD display driver (drm/amd/display) that can cause a denial-of-service condition. The issue arises from a race condition in power management: the driver may attempt to send commands to the DMCUB microcontroller while it is powered down, leading to a command path hang. This can result in the display stack or the entire system becoming unresponsive. The vulnerability was disclosed as part of coordinated Linux kernel security announcements. Users running Linux with AMD GPUs should apply kernel patches to mitigate this DoS risk.