CVE-2025-23244: NVIDIA GPU Display Driver Escalation Flaw

CVE-2025-23244 Overview

CVE-2025-23244 is a privilege escalation vulnerability in the NVIDIA GPU Display Driver for Linux. This vulnerability allows an unprivileged local attacker to escalate permissions on affected systems. A successful exploit of this vulnerability could lead to code execution, denial of service, escalation of privileges, information disclosure, and data tampering.

The vulnerability is classified under CWE-863 (Incorrect Authorization), indicating that the driver fails to properly verify authorization before performing sensitive operations, allowing attackers to bypass security controls.

Critical Impact

Unprivileged local attackers can exploit this vulnerability to gain elevated privileges, potentially achieving full system compromise with the ability to execute arbitrary code, tamper with data, and disrupt system availability.

Affected Products

• NVIDIA GPU Display Driver for Linux

Discovery Timeline

• 2025-05-01 - CVE CVE-2025-23244 published to NVD
• 2025-05-02 - Last updated in NVD database

Technical Details for CVE-2025-23244

Vulnerability Analysis

This vulnerability stems from an incorrect authorization flaw (CWE-863) within the NVIDIA GPU Display Driver for Linux. The driver fails to properly enforce authorization checks, allowing unprivileged local users to perform actions that should require elevated privileges.

The local attack vector means an attacker must have some form of access to the target system, either through a user account or physical access. Once access is obtained, the vulnerability can be exploited without requiring any user interaction, making it particularly dangerous in multi-user environments such as shared workstations, virtual desktop infrastructure (VDI), or containerized GPU computing environments.

The potential impact is severe, affecting all three pillars of security: confidentiality, integrity, and availability. Attackers could read sensitive memory contents, modify system data, or cause system instability.

Root Cause

The root cause of CVE-2025-23244 is an incorrect authorization vulnerability (CWE-863) in the NVIDIA GPU Display Driver. This type of flaw occurs when software does not properly verify that a user has the necessary privileges to perform a requested action. In the context of GPU drivers, this could involve improper validation of user requests to privileged driver functions, inadequate access control checks on memory operations, or failure to properly segregate user-space and kernel-space permissions.

Attack Vector

The attack vector for this vulnerability is local, requiring the attacker to have existing access to the target system. The exploitation process involves:

1. An attacker with low-privilege local access identifies a system running a vulnerable NVIDIA GPU Display Driver for Linux
2. The attacker crafts malicious requests to the driver that bypass authorization checks
3. Due to the incorrect authorization flaw, the driver processes these requests with elevated privileges
4. The attacker achieves privilege escalation, potentially gaining root-level access to the system

This vulnerability is particularly concerning in environments where multiple users share access to systems with NVIDIA GPUs, such as machine learning clusters, research computing environments, or cloud GPU instances.

Detection Methods for CVE-2025-23244

Indicators of Compromise

• Unexpected privilege changes for user accounts on systems with NVIDIA GPUs
• Unusual driver-related system calls or ioctl operations from non-privileged processes
• System logs showing authorization failures followed by successful privileged operations
• Anomalous memory access patterns related to the NVIDIA driver

Detection Strategies

• Monitor for unusual process behavior involving the NVIDIA driver (nvidia.ko or related kernel modules)
• Implement kernel-level auditing to track privileged operations on GPU devices
• Deploy endpoint detection solutions capable of identifying privilege escalation attempts
• Review system logs for anomalous authentication and authorization events related to GPU operations

Monitoring Recommendations

• Enable comprehensive audit logging for GPU device access and driver interactions
• Implement real-time monitoring for privilege escalation indicators on systems with NVIDIA GPUs
• Configure alerts for unusual kernel module loading or driver manipulation activities
• Regularly review user privilege levels and access patterns on GPU-enabled systems

How to Mitigate CVE-2025-23244

Immediate Actions Required

• Update NVIDIA GPU Display Drivers to the latest patched version immediately
• Restrict local access to systems with NVIDIA GPUs to only authorized users
• Implement the principle of least privilege for all user accounts on affected systems
• Monitor systems for signs of exploitation attempts while updates are being deployed

Patch Information

NVIDIA has released security updates to address this vulnerability. Detailed patch information and affected driver versions are available in the NVIDIA Security Bulletin. System administrators should consult this advisory to determine the appropriate driver version for their environment and apply updates as soon as possible.

Workarounds

• Limit local user access to systems with NVIDIA GPUs until patches can be applied
• Implement additional access controls and monitoring on GPU-enabled systems
• Consider temporarily disabling non-essential GPU functionality in sensitive environments
• Use application allowlisting to restrict which processes can interact with the NVIDIA driver