NVIDIA vGPU Manager (vGPU plugin): Unvalidated guest-supplied index in the vGPU plugin. A tenant VM crashes the host

Impact

Unvalidated guest-supplied index in the vGPU plugin. A tenant VM crashes the host plugin and takes out the GPU for every co-tenant.

Who can reach it

Any unprivileged user inside a guest VM with a vGPU.

What to do

Upgrade the vGPU Manager on the hypervisor host to the fixed vGPU release. The host component is a kernel module inside the hypervisor, so this is a full node drain: evacuate or power off every tenant VM on the host, upgrade, reboot the host. Guest drivers must be kept within the supported version skew and updated per VM (guest reboot). No VBIOS flash, but expect a maintenance window per host and a matching hypervisor-vendor package (VMware/Citrix/KVM/Nutanix builds ship separately).

References