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CVE-2025-47277

CVE-2025-47277 · vLLM Allows Remote Code Execution via PyNcclPipe Communication Service

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vLLM, an inference and serving engine for large language models (LLMs), has an issue in versions 0.6.5 through 0.8.4 that ONLY impacts environments using the `PyNcclPipe` KV cache transfer integration with the V0 engine. No other configurations are affected. vLLM supports the use of the `PyNcclPipe` class to establish a peer-to-peer communication domain for data transmission between distributed nodes. The GPU-side KV-Cache transmission is implemented through the `PyNcclCommunicator` class, while CPU-side control message passing is handled via the `send_obj` and `recv_obj` methods on the CPU side.​ The intention was that this interface should only be exposed to a private network using the IP address specified by the `--kv-ip` CLI parameter. The vLLM documentation covers how this must be limited to a secured network. The default and intentional behavior from PyTorch is that the `TCPStore` interface listens on ALL interfaces, regardless of what IP address is provided. The IP address given was only used as a client-side address to use. vLLM was fixed to use a workaround to force the `TCPStore` instance to bind its socket to a specified private interface. As of version 0.8.5, vLLM limits the `TCPStore` socket to the private interface as configured.

CVSS 9.8 · Kritisch · EPSS 1,0% · Korrektur verfügbar

Veröffentlicht
Aktualisiert

Technologie-Stack: python

Betroffene Produkte und Versionen

  • vllm

    Softwareversionen
    • >= 0.6.5, < 0.8.5: Betroffen

    Keine Korrektur veröffentlicht

  • vllm PyPI

    Softwareversionen
    • 0.6.5
    • 0.6.6
    • 0.6.6.post1
    • 0.7.0
    • 0.7.1
    • 0.7.2
    • 0.7.3
    • 0.8.0
    • 0.8.1
    • 0.8.2
    • 0.8.3
    • 0.8.4
    Betroffene Versionsbereiche
    • ECOSYSTEM: ≥ 0.6.5, < 0.8.5

    Auf 0.8.5 aktualisieren

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