NVIDIA vGPU software (guest kernel-mode driver + vGPU plugin): Unvalidated input size across the guest kernel-mode

Impact

Unvalidated input size across the guest kernel-mode driver and vGPU plugin boundary - a tenant tampers with host-side data or crashes the shared GPU. vGPU 8.x before 8.6, 11.0 before 11.3.

Who can reach it

Any user inside a guest VM with a vGPU.

What to do

Upgrade the vGPU Manager on the host and the vGPU guest driver inside each tenant VM to the fixed release. Host side is a node drain plus reboot; guest side is a per-VM driver install and reboot. Because the guest driver is inside tenant-controlled VMs, in a multi-tenant estate you cannot fully remediate the guest half yourself - the host-side upgrade is the control you own. No VBIOS flash.

References

Related entries

• NVIDIA vGPU software (guest kernel-mode driver + vGPU plugin): Unvalidated index across the guest driver and vGPUCVE-2021-1060 · NVIDIA vGPU software (guest kernel-mode driver + vGPU plugin)High
• NVIDIA vGPU software (guest kernel-mode driver + vGPU plugin): The vGPU plugin lets guest code reach privilegedCVE-2020-5973 · NVIDIA vGPU software (guest kernel-mode driver + vGPU plugin)Medium
• NVIDIA vGPU software (guest kernel-mode driver + vGPU plugin): Unvalidated length across the guest kernel-mode driverCVE-2021-1081 · NVIDIA vGPU software (guest kernel-mode driver + vGPU plugin)High
• NVIDIA vGPU software (guest kernel-mode driver + vGPU plugin): Unvalidated length across the guest driver and vGPUCVE-2021-1083 · NVIDIA vGPU software (guest kernel-mode driver + vGPU plugin)High
• NVIDIA vGPU software (guest kernel-mode driver + vGPU plugin): Another unvalidated-length path between guest driver andCVE-2021-1084 · NVIDIA vGPU software (guest kernel-mode driver + vGPU plugin)High
• NVIDIA vGPU Manager (vGPU plugin): Unvalidated guest-supplied length in the vGPU pluginCVE-2021-1062 · NVIDIA vGPU Manager (vGPU plugin)High