CVE-2022-28181: Nvidia Virtual GPU RCE Vulnerability

CVE-2022-28181 Overview

CVE-2022-28181 is a critical out-of-bounds write vulnerability affecting the NVIDIA GPU Display Driver for both Windows and Linux operating systems. The vulnerability exists in the kernel mode layer, where an unprivileged regular user on the network can cause an out-of-bounds write through a specially crafted shader. Successful exploitation may lead to code execution, denial of service, escalation of privileges, information disclosure, and data tampering. Notably, the scope of the impact may extend to other components beyond the vulnerable driver itself.

Critical Impact

This vulnerability enables remote code execution with the potential for privilege escalation and complete system compromise through malicious shader exploitation. The changed scope indicates impact can cascade to other system components.

Affected Products

• NVIDIA GPU Display Driver for Windows
• NVIDIA GPU Display Driver for Linux
• NVIDIA Virtual GPU (vGPU) versions prior to 14.0

Discovery Timeline

• 2022-05-17 - CVE-2022-28181 published to NVD
• 2024-11-21 - Last updated in NVD database

Technical Details for CVE-2022-28181

Vulnerability Analysis

This vulnerability is classified as CWE-787 (Out-of-Bounds Write), a memory corruption flaw that occurs when the NVIDIA GPU Display Driver's kernel mode layer processes specially crafted shaders. The kernel mode layer handles shader compilation and execution, and fails to properly validate shader inputs before writing to memory buffers.

When an attacker submits a malicious shader, the driver processes it without adequate bounds checking, allowing write operations to occur outside the intended memory boundaries. This can corrupt adjacent memory regions, overwrite critical data structures, or hijack program execution flow. The network-based attack vector means this can be triggered remotely by an unprivileged user, significantly increasing the risk exposure for systems with network-accessible GPU resources.

The changed scope indicator in the vulnerability assessment is particularly concerning, as it means successful exploitation of the GPU driver can impact components outside the vulnerable driver's security context, potentially affecting the entire host system or other virtual machines in virtualized environments.

Root Cause

The root cause lies in insufficient input validation within the NVIDIA GPU Display Driver's kernel mode layer when processing shader code. The driver fails to properly validate the size and content of shader data before performing write operations, allowing maliciously crafted shaders to trigger memory writes beyond allocated buffer boundaries. This is a classic out-of-bounds write condition that can be leveraged for various attack scenarios including arbitrary code execution in kernel context.

Attack Vector

The attack is network-based, requiring only low privileges and no user interaction. An attacker can exploit this vulnerability by:

1. Crafting a malicious shader designed to trigger the out-of-bounds write condition
2. Submitting the shader to a vulnerable NVIDIA GPU driver through network-accessible GPU resources
3. The kernel mode layer processes the shader without proper bounds checking
4. Memory corruption occurs as the shader writes data outside allocated boundaries
5. Depending on the corrupted memory regions, the attacker can achieve code execution, privilege escalation, or cause system instability

The vulnerability mechanism involves the kernel mode layer's shader processing pipeline. When shaders are submitted for compilation or execution, the driver parses and processes shader instructions. The malicious shader exploits a flaw in this processing to cause writes to unintended memory locations. For detailed technical analysis, refer to the NVIDIA Security Advisory.

Detection Methods for CVE-2022-28181

Indicators of Compromise

• Unusual GPU driver crashes or system instability that may indicate exploitation attempts
• Kernel panic events or blue screens related to NVIDIA driver components (nvlddmkm.sys on Windows, nvidia.ko on Linux)
• Anomalous network traffic targeting systems with exposed GPU resources
• Unexpected privilege escalation events following GPU-related activity

Detection Strategies

• Monitor for kernel-level exceptions or crashes within NVIDIA GPU driver components
• Implement network monitoring for unusual traffic patterns targeting GPU-enabled systems
• Deploy endpoint detection solutions capable of monitoring kernel driver behavior
• Enable enhanced logging for GPU driver operations where available

Monitoring Recommendations

• Audit driver versions across all systems to identify unpatched NVIDIA GPU installations
• Configure alerts for any crashes involving nvlddmkm.sys (Windows) or nvidia.ko (Linux)
• Monitor for exploitation indicators in virtualized environments using NVIDIA vGPU
• Implement SentinelOne's kernel-level monitoring to detect anomalous driver behavior

How to Mitigate CVE-2022-28181

Immediate Actions Required

• Update NVIDIA GPU Display Drivers to the latest patched versions immediately
• For vGPU deployments, upgrade to version 14.0 or later
• Restrict network access to systems with GPU resources to authorized users only
• Implement network segmentation to limit exposure of GPU-enabled systems

Patch Information

NVIDIA has released security updates to address this vulnerability. Administrators should consult the NVIDIA Security Advisory for specific patch versions applicable to their driver branch. Linux distributions such as Gentoo have issued their own advisories; refer to Gentoo GLSA 202310-02 for distribution-specific guidance.

Workarounds

• Limit network exposure of systems running NVIDIA GPU drivers until patches can be applied
• Restrict GPU access to trusted users and applications only
• Consider disabling network-accessible GPU features if not required for business operations
• Implement application whitelisting to prevent unauthorized shader submissions

# Check current NVIDIA driver version on Linux
nvidia-smi --query-gpu=driver_version --format=csv,noheader

# Verify installed NVIDIA packages on Linux (Debian-based)
dpkg -l | grep nvidia-driver

# Update NVIDIA drivers on Linux (Ubuntu/Debian)
sudo apt update && sudo apt upgrade nvidia-driver-*