CVE-2026-24260: 
NVIDIA Container Toolkit 脆弱性の分析と軽減

CVE-2026-24260 is a time-of-check time-of-use (TOCTOU) race condition vulnerability in NVIDIA Container Toolkit for Linux. It affects all versions of NVIDIA Container Toolkit up to and including 1.19.0, and NVIDIA GPU Operator up to and including 26.3.1. The vulnerability was disclosed on July 1, 2026, with a patch made available the same day. It carries a CVSS v3.1 base score of 8.5 (High), assigned by NVIDIA Corporation (Github Advisory, NVIDIA Advisory).

The vulnerability is classified as CWE-367 (Time-of-check Time-of-use Race Condition), where the toolkit checks the state of a resource before using it, but the resource's state can change between the check and the use in a way that invalidates the check's results. This is consistent with CAPEC-27 (Leveraging Race Conditions via Symbolic Links) and CAPEC-29 (Leveraging TOCTOU Race Conditions). An authenticated, low-privileged attacker operating over the network can exploit the race window to manipulate container runtime resources, potentially achieving code execution, privilege escalation, or data tampering. The attack complexity is rated High, reflecting the need to win a timing race, and the scope is Changed, indicating impact beyond the vulnerable component itself (Github Advisory, NVIDIA Advisory).

Successful exploitation can lead to arbitrary code execution, escalation of privileges within the container environment, and data tampering, with high impact to confidentiality, integrity, and availability. Because the scope is Changed, a successful attacker could potentially break out of container isolation boundaries and affect the underlying host or adjacent container workloads. This makes the vulnerability particularly significant in multi-tenant GPU-accelerated environments such as AI/ML platforms and cloud infrastructure leveraging NVIDIA GPUs (Github Advisory, NVIDIA Advisory).

NVIDIA has released a patch addressing this vulnerability; users should update NVIDIA Container Toolkit to a version beyond 1.19.0 and NVIDIA GPU Operator to a version beyond 26.3.1 as soon as possible (NVIDIA Advisory). As interim mitigations, administrators should restrict network access to container management interfaces to trusted networks only, apply the principle of least privilege to limit which users can interact with the container toolkit, and monitor container runtime logs for suspicious timing patterns or anomalous resource access behavior. The full security bulletin, including CSAF and Markdown formats, is available in NVIDIA's product-security repository (NVIDIA Advisory).

Coverage of CVE-2026-24260 has been limited to vulnerability tracking and aggregation sites such as SecurityOnline, CVEFeed, and CIRCL, with no notable independent researcher commentary or significant social media discussion identified at this time (NVIDIA Product Security).