CVE-2020-5989 in Virtual GPU Manager
Summary
by MITRE • 10/04/2020
NVIDIA Virtual GPU Manager contains a vulnerability in the vGPU plugin, in which it can dereference a NULL pointer, which may lead to denial of service. This affects vGPU version 8.x (prior to 8.5), version 10.x (prior to 10.4) and version 11.0.
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Analysis
by VulDB Data Team • 11/16/2020
The vulnerability identified as CVE-2020-5989 resides within NVIDIA Virtual GPU Manager's vGPU plugin component, representing a critical null pointer dereference flaw that can compromise system stability and availability. This issue specifically impacts organizations utilizing NVIDIA virtual GPU solutions across multiple version streams including 8.x series before 8.5, 10.x series before 10.4, and the 11.0 release. The vulnerability stems from insufficient input validation and error handling within the plugin's memory management routines, creating an exploitable condition where the system attempts to access memory locations through a null reference. Such flaws typically emerge when developers fail to properly initialize pointers or validate input parameters before dereferencing them, leaving systems susceptible to abrupt termination or system instability. The affected vGPU plugin operates as a critical component within virtualized GPU environments, managing resource allocation and communication between virtual machines and physical GPU hardware, making this vulnerability particularly concerning for enterprise deployments that rely heavily on virtualized graphics processing.
The technical exploitation of this vulnerability occurs when the vGPU plugin encounters malformed or unexpected input data that triggers the null pointer dereference condition. When the plugin attempts to execute operations on a null reference, the operating system typically generates a segmentation fault or access violation error, resulting in the immediate termination of the vGPU plugin process. This process crash can cascade into broader system instability, potentially affecting other virtualized services or causing complete system downtime in scenarios where the plugin serves as a critical system component. The vulnerability's impact is amplified in virtualized environments where multiple VMs depend on the same vGPU plugin for graphics processing capabilities, as a single crash can affect numerous virtual machines simultaneously. The flaw aligns with CWE-476, which specifically addresses null pointer dereference conditions, and demonstrates how inadequate error handling can lead to denial of service scenarios in system components that manage critical hardware resources.
From an operational perspective, this vulnerability poses significant risks to organizations utilizing NVIDIA virtual GPU solutions in production environments, particularly those running virtual desktop infrastructures, cloud computing platforms, or any system requiring consistent GPU resource allocation. The denial of service condition can result in unexpected service interruptions, user access disruptions, and potential data loss during critical operations. Attackers could potentially exploit this vulnerability to perform sustained denial of service attacks by repeatedly triggering the null pointer dereference condition, leading to persistent system instability and reduced availability of virtualized GPU resources. The impact extends beyond simple service disruption as organizations may face compliance issues, SLA violations, and reputational damage when such vulnerabilities are exploited in enterprise environments. The vulnerability's presence in multiple version streams indicates a widespread issue that requires immediate attention across various deployment scenarios, from small business implementations to large-scale data center operations.
Organizations should implement immediate mitigation strategies including applying the latest NVIDIA vGPU patches and updates, particularly targeting the specific version ranges mentioned in the vulnerability description. System administrators should consider implementing monitoring solutions that can detect abnormal plugin behavior or process crashes, enabling rapid response to potential exploitation attempts. Network segmentation and access controls should be strengthened to limit exposure of affected systems to untrusted networks or users. Additionally, organizations should conduct thorough vulnerability assessments to identify all systems running affected vGPU versions and prioritize remediation efforts based on risk exposure. The implementation of robust input validation and error handling mechanisms within virtualization environments can serve as additional protective measures. Security teams should also consider implementing intrusion detection systems that can identify patterns consistent with exploitation attempts targeting null pointer dereference vulnerabilities. Regular security updates and patch management processes should be enhanced to ensure rapid deployment of security fixes across all virtualized environments. Organizations may also benefit from implementing redundancy measures and failover mechanisms to maintain service availability during patch deployment windows, while maintaining compliance with industry standards such as those outlined in the NIST Cybersecurity Framework and ISO 27001 security management requirements.