AMD Graphics Driver - crafted pointer leading to arbitrary writes: A specially crafted pointer passed to the AMD

Impact

A specially crafted pointer passed to the AMD graphics driver produces arbitrary writes or a crash. Arbitrary kernel writes from a GPU driver call is a privilege-escalation primitive available to anything with the device open - on a shared GPU node, that is the tenant.

Who can reach it

Local, via the graphics driver interface.

What to do

Update the AMD graphics driver and reload or reboot. Driver-level fix, no firmware step.

References