NVIDIA vGPU software (guest kernel-mode driver + vGPU plugin): The vGPU plugin lets guest code reach privileged

Impact

The vGPU plugin lets guest code reach privileged operations it should not have, which a tenant uses to deny service on the shared GPU. vGPU 8.x before 8.4, 9.x before 9.4, 10.x before 10.3.

Who can reach it

A user inside a guest VM with a vGPU, using the guest kernel-mode driver.

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 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 software (guest kernel-mode driver + vGPU plugin): Unvalidated input size across the guest kernel-modeCVE-2021-1058 · NVIDIA vGPU software (guest kernel-mode driver + vGPU plugin)High
• 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 Windows GPU Display Driver (nvlddmkm.sys): No rate limiting in the kernel-mode scheduler: a local process floodsCVE-2020-5982 · NVIDIA Windows GPU Display Driver (nvlddmkm.sys)Medium