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CVE-2025-3730

CVE-2025-3730 · PyTorch LossCTC.cpp torch.nn.functional.ctc_loss denial of service

This page contains facts from public vulnerability sources. Check the original advisory before updating.

A vulnerability, which was classified as problematic, was found in PyTorch 2.6.0. Affected is the function torch.nn.functional.ctc_loss of the file aten/src/ATen/native/LossCTC.cpp. The manipulation leads to denial of service. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. The name of the patch is 46fc5d8e360127361211cb237d5f9eef0223e567. It is recommended to apply a patch to fix this issue. The security policy of the project warns to use unknown models which might establish malicious effects.

CVSS 4.8 · Medium · EPSS 0.3% · Fix available

Published
Updated

Stack: system · python

Affected products and versions

  • pytorch

    Versions
    • 2.6.0: Affected

    No fix published

  • pytorch Debian:12

    Versions
    • 1.13.1+dfsg-4
    • 1.13.1+dfsg-5
    • 2.0.1+dfsg-1
    • 2.0.1+dfsg-1~exp1
    • 2.0.1+dfsg-2
    • 2.0.1+dfsg-4
    • 2.0.1+dfsg-5
    • 2.1.2+dfsg-1
    • 2.1.2+dfsg-2
    • 2.1.2+dfsg-4
    • 2.12.0+dfsg2-1
    • 2.12.0+dfsg2-1~exp1
    • 2.12.0+dfsg2-1~exp2
    • 2.12.0+dfsg2-2
    • 2.12.0+dfsg2-3
    • 2.12.0+dfsg2-4
    • 2.12.1+dfsg-1
    • 2.4.1-1
    • 2.4.1-3
    • 2.4.1-4
    • 2.5.0+dfsg-1
    • 2.5.1+dfsg-1
    • 2.5.1+dfsg-3
    • 2.5.1+dfsg-4
    • 2.6.0+dfsg-1
    • 2.6.0+dfsg-1~exp1
    • 2.6.0+dfsg-2
    • 2.6.0+dfsg-3
    • 2.6.0+dfsg-4
    • 2.6.0+dfsg-5
    • 2.6.0+dfsg-7
    • 2.6.0+dfsg-8
    • 2.6.0+dfsg-9
    • 2.6.0~rc9+dfsg-1~exp1
    • 2.9.0+dfsg-1~exp1
    • 2.9.0+dfsg-1~exp2
    • 2.9.1+dfsg-1~exp1
    • 2.9.1+dfsg-1~exp2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pytorch Debian:13

    Versions
    • 2.12.0+dfsg2-1
    • 2.12.0+dfsg2-1~exp1
    • 2.12.0+dfsg2-1~exp2
    • 2.12.0+dfsg2-2
    • 2.12.0+dfsg2-3
    • 2.12.0+dfsg2-4
    • 2.12.1+dfsg-1
    • 2.6.0+dfsg-7
    • 2.6.0+dfsg-8
    • 2.6.0+dfsg-9
    • 2.9.0+dfsg-1~exp1
    • 2.9.0+dfsg-1~exp2
    • 2.9.1+dfsg-1~exp1
    • 2.9.1+dfsg-1~exp2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pytorch Debian:14

    Versions
    • 2.12.0+dfsg2-1~exp1
    • 2.12.0+dfsg2-1~exp2
    • 2.6.0+dfsg-7
    • 2.6.0+dfsg-8
    • 2.6.0+dfsg-9
    • 2.9.0+dfsg-1~exp1
    • 2.9.0+dfsg-1~exp2
    • 2.9.1+dfsg-1~exp1
    • 2.9.1+dfsg-1~exp2
    Affected ranges
    • ECOSYSTEM: < 2.12.0+dfsg2-1

    Update to 2.12.0+dfsg2-1

  • torch PyPI

    Versions
    • 1.0.0
    • 1.0.1
    • 1.1.0
    • 1.10.0
    • 1.10.1
    • 1.10.2
    • 1.11.0
    • 1.12.0
    • 1.12.1
    • 1.13.0
    • 1.13.1
    • 1.2.0
    • 1.3.0
    • 1.3.1
    • 1.4.0
    • 1.5.0
    • 1.5.1
    • 1.6.0
    • 1.7.0
    • 1.7.1
    • 1.8.0
    • 1.8.1
    • 1.9.0
    • 1.9.1
    • 2.0.0
    • 2.0.1
    • 2.1.0
    • 2.1.1
    • 2.1.2
    • 2.2.0
    • 2.2.1
    • 2.2.2
    • 2.3.0
    • 2.3.1
    • 2.4.0
    • 2.4.1
    • 2.5.0
    • 2.5.1
    • 2.6.0
    • 2.7.0
    • 2.7.1
    Affected ranges
    • ECOSYSTEM: < 2.8.0

    Update to 2.8.0

  • pytorch Ubuntu:22.04:LTS

    Versions
    • 1.7.1-7
    • 1.8.1-4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pytorch Ubuntu:25.10

    Versions
    • 2.6.0+dfsg-5build1
    • 2.6.0+dfsg-7
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pytorch Ubuntu:26.10

    Versions
    • 2.9.1+dfsg-1~exp1ubuntu2
    • 2.12.1+dfsg-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pytorch Ubuntu:26.04:LTS

    Versions
    • 2.6.0+dfsg-7
    • 2.6.0+dfsg-9
    • 2.9.1+dfsg-1~exp1ubuntu2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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