NVIDIA GPU Display Driver (Windows nvlddmkm.sys + Linux nvidia.ko): Reference-count mishandling on a driver resource

Impact

Reference-count mishandling on a driver resource in the R450 and R460 branches. Refcount bugs of this shape typically become use-after-free with effort; NVIDIA rates the confirmed impact as denial of service.

Who can reach it

Any local user or GPU container with device access.

What to do

Install the fixed GPU Display Driver branch on both Windows and Linux nodes. The kernel component (nvlddmkm.sys / nvidia.ko) cannot be hot-swapped under load, so this is a node drain and reboot per host; restart the container runtime afterwards so mounted driver libraries match the kernel module. No VBIOS or BMC flash.

References