Guest-to-Host Escape: NVIDIA Patches Critical vGPU & Driver Flaws

NVIDIA has released a sweeping security update to address a series of high-severity vulnerabilities affecting its GPU Display Driver and Virtual GPU (vGPU) software. The flaws, if left unpatched, could allow attackers to execute arbitrary code, escalate privileges, or cause denial-of-service (DoS) conditions on both Windows and Linux systems.

The security bulletin details multiple vulnerabilities, with several carrying a CVSS Base Score of 7.8, marking them as high-priority fixes for system administrators and gamers alike.

One of the most concerning issues is CVE-2025-33217, a “Use After Free” vulnerability in the NVIDIA Display Driver for Windows. This type of memory corruption error occurs when a program attempts to use memory after it has been freed, which can lead to crashes or, more dangerously, code execution.

According to the bulletin, “A successful exploit of this vulnerability might lead to code execution, escalation of privileges, data tampering, denial of service, and information disclosure”. This flaw specifically affects the user-mode layer of the driver, making it a critical entry point for local attackers.

The update also addresses significant flaws deep within the kernel mode layer (nvlddmkm.sys on Windows). CVE-2025-33218 describes an Integer Overflow vulnerability that could allow an attacker to “cause an integer overflow,” leading to similar catastrophic outcomes: code execution, privilege escalation, or data tampering.

Linux users are not spared, with CVE-2025-33219 identifying a kernel module vulnerability where an attacker could trigger an integer overflow or wraparound.

For enterprise and cloud environments, CVE-2025-33220 poses a significant risk to the Virtual GPU Manager. This vulnerability allows a “malicious guest” to cause “heap memory access after the memory is freed”.

This is a classic “guest-to-host” escape scenario, where an attacker compromising a virtual machine could potentially impact the host server. The bulletin warns that a successful exploit “might lead to code execution, escalation of privileges, data tampering, denial of service, or information disclosure”.

NVIDIA has released updated drivers across all affected branches.

• For Windows: Users should update to version 591.59, 582.16, 573.76, or 539.64, depending on their driver branch.
• For Linux: Updates are available for versions 590.48.01, 580.126.09, 570.211.01, and 535.288.01.

Administrators are urged to apply these patches immediately, as the combination of privilege escalation and code execution risks makes these drivers a prime target for exploitation.

Related Posts:

• NVIDIA Update: 14 Vulnerabilities Patched in GPU Drivers & vGPU Software
• NVIDIA Releases Security Update to Address GPU Driver Vulnerabilities
• NVIDIA Addresses High Security Flaws in GPU Display Drivers and vGPU Software
• NVIDIA GPU Driver Patches Multiple High-Severity Flaws Risking RCE and Privilege Escalation
• Outdated and Unblocked: Legacy Driver Vulnerability Exploited in Widespread Attack