Memory Leak in NVIDIA Triton Inference Server

Executive Summary

CVE-2026-47482 is a vulnerability in NVIDIA Triton Inference Server for Linux. It involves a missing release of memory after its effective lifetime, which is a type of memory management flaw.

An attacker can exploit this vulnerability by causing the system to fail to free memory that is no longer needed. This can lead to memory exhaustion over time, resulting in a denial of service (DoS) condition where the affected service becomes unresponsive or crashes.

• The vulnerability is classified under CWE-401 (Missing Release of Memory after Effective Lifetime).
• It affects Triton Inference Server for Linux versions up to and including 26.04.

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Detection Guidance

Detecting this vulnerability on your network or system requires checking for the presence of affected versions of NVIDIA Triton Inference Server for Linux. Since the vulnerability involves a missing release of memory after its effective lifetime, it may not be directly detectable via simple commands without deeper inspection or monitoring.

• Check the installed version of NVIDIA Triton Inference Server. If it is version 26.04 or earlier, the system is vulnerable. You can verify the version using the following command: tritonserver --version or by checking the package manager, e.g., dpkg -l | grep triton or rpm -qa | grep triton.
• Monitor system memory usage for unusual patterns, such as memory leaks or excessive memory consumption, which could indicate exploitation attempts. Tools like top, htop, or valgrind can be used for memory analysis.
• Review logs for unexpected crashes or denial of service events in the Triton Inference Server logs, typically located in /var/log/ or the directory specified in the server configuration.

Note that these methods may not definitively confirm the vulnerability but can help identify potential risks or affected systems.

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Impact Analysis

If you are using NVIDIA Triton Inference Server for Linux, this vulnerability could impact you in the following ways:

• Denial of Service (DoS): An attacker could exploit this flaw to cause the server to run out of memory, leading to crashes or unresponsiveness. This could disrupt services that rely on the Triton Inference Server.
• Service Disruption: If the server crashes or becomes unresponsive, any applications or systems depending on it for inference tasks may fail, causing downtime or degraded performance.
• No Data Theft or Corruption: The vulnerability does not allow for unauthorized access to data or modification of data, as it only affects availability (A:H in the CVSS vector).

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Compliance Impact

This vulnerability primarily affects the availability of the NVIDIA Triton Inference Server. Its impact on compliance with common standards and regulations depends on how the affected system is used:

• GDPR: If the Triton Inference Server processes personal data of EU citizens, a denial of service caused by this vulnerability could lead to unavailability of services, potentially violating GDPR's requirements for data availability and resilience (Article 32). However, since the vulnerability does not involve unauthorized access or disclosure of personal data, it is less likely to directly violate GDPR's data protection principles.
• HIPAA: For organizations handling protected health information (PHI), this vulnerability could disrupt access to critical systems, potentially violating HIPAA's requirements for ensuring the availability of electronic PHI (ePHI). However, since the vulnerability does not involve unauthorized access or disclosure of PHI, it is less likely to directly violate HIPAA's privacy or security rules.
• Other Standards: Compliance frameworks like ISO 27001 or SOC 2 emphasize the importance of system availability. A successful exploit of this vulnerability could result in non-compliance if the affected system is within the scope of such audits.

While the vulnerability itself may not directly violate specific compliance requirements, the resulting service disruption could have indirect compliance implications depending on the context of its use.

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Mitigation Strategies

To mitigate this vulnerability, follow these immediate steps:

• Upgrade NVIDIA Triton Inference Server to a version later than 26.04, as the vulnerability affects versions up to and including 26.04. Check NVIDIA's official website or package repositories for the latest secure version.
• If upgrading is not immediately possible, restrict network access to the Triton Inference Server to trusted IP addresses only. This can be done using firewall rules or network segmentation to limit exposure to potential attackers.
• Monitor the server for signs of exploitation, such as unusual memory usage or crashes, and implement logging to track access and usage patterns.
• Consider deploying intrusion detection or prevention systems (IDS/IPS) to detect and block potential exploitation attempts targeting this vulnerability.

For long-term mitigation, ensure regular updates and patches are applied to all software, and follow NVIDIA's security advisories for any additional guidance.

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