NVIDIA vGPU Manager (vGPU plugin): MULTI-TENANT ISOLATION: an index value from the guest is not validated by the vGPU

Impact

MULTI-TENANT ISOLATION: an index value from the guest is not validated by the vGPU plugin, letting one tenant VM crash the host-side plugin and deny service to every co-tenant on that GPU.

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