NVIDIA vGPU Manager (vGPU plugin): The vGPU plugin lets guests allocate resources they are not authorised to hold

Impact

The vGPU plugin lets guests allocate resources they are not authorised to hold, which NVIDIA describes as integrity and confidentiality loss. A tenant VM grabbing unauthorised host GPU resources is the isolation boundary failing outright. vGPU 8.x before 8.6, 11.0 before 11.3.

Who can reach it

Any unprivileged user inside a guest VM with a vGPU on the affected host.

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