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pytorch — security advisory

Type: advisorySources: OSVAdvisory ID: UBUNTU-CVE-2025-55553

A syntax error in the component proxy_tensor.py of pytorch v2.7.0 allows attackers to cause a Denial of Service (DoS).

Products
pytorch
Affected versions
1.7.1-7, 1.8.1-4, 2.12.1+dfsg-1, 2.6.0+dfsg-5build1, 2.6.0+dfsg-7, 2.6.0+dfsg-9, 2.9.1+dfsg-1~exp1ubuntu2
Fixed versions
Not specified
CVEs
CVE-2025-55553
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 01:34 UTC · Revision 1

Source evidence

UBUNTU-CVE-2025-55553

core-osv · Original source

Published 25 Sept 2025, 16:15 UTC

A syntax error in the component proxy_tensor.py of pytorch v2.7.0 allows attackers to cause a Denial of Service (DoS).

osv:UBUNTU-CVE-2025-55553

pytorch

Fixed versions: Not specified

pytorch

Fixed versions: Not specified

pytorch

Fixed versions: Not specified

pytorch

Fixed versions: Not specified

Complete source record
{
  "id": "dac47e0a278e80383167f763cc001768d358de933447539a815824ec5782f40c",
  "url": "https://osv.dev/vulnerability/UBUNTU-CVE-2025-55553",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "UBUNTU-CVE-2025-55553",
    "summary": "A syntax error in the component proxy_tensor.py of pytorch v2.7.0 allows attackers to cause a Denial of Service (DoS).",
    "evidence": "osv:UBUNTU-CVE-2025-55553",
    "products": [
      {
        "name": {
          "value": "pytorch",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.7.1-7",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.8.1-4",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
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          "evidence": "/affected/1/package/name"
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        "prerequisites": [],
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        "affected_versions": [
          {
            "value": "2.6.0+dfsg-5build1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.6.0+dfsg-7",
            "evidence": "/affected/1/versions"
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        },
        "prerequisites": [],
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        "affected_versions": [
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            "value": "2.9.1+dfsg-1~exp1ubuntu2",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.12.1+dfsg-1",
            "evidence": "/affected/2/versions"
          }
        ]
      },
      {
        "name": {
          "value": "pytorch",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "2.6.0+dfsg-7",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "2.6.0+dfsg-9",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "2.9.1+dfsg-1~exp1ubuntu2",
            "evidence": "/affected/3/versions"
          }
        ]
      }
    ],
    "severity": "high",
    "structured": {
      "id": "UBUNTU-CVE-2025-55553",
      "aliases": [
        "UBUNTU-CVE-2025-55553"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        },
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        },
        {
          "type": "Ubuntu",
          "score": "medium"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
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            "ecosystem": "Ubuntu:22.04:LTS"
          },
          "versions": [
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            "1.8.1-4"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-55553.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libtorch-test",
                "binary_version": "1.8.1-4"
              },
              {
                "binary_name": "libtorch1.8",
                "binary_version": "1.8.1-4"
              },
              {
                "binary_name": "python3-torch",
                "binary_version": "1.8.1-4"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
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              ]
            }
          ],
          "package": {
            "name": "pytorch",
            "purl": "pkg:deb/ubuntu/pytorch?arch=source&distro=questing",
            "ecosystem": "Ubuntu:25.10"
          },
          "versions": [
            "2.6.0+dfsg-5build1",
            "2.6.0+dfsg-7"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-55553.json"
          },
          "ecosystem_specific": {
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                "binary_version": "2.6.0+dfsg-7"
              },
              {
                "binary_name": "libtorch2.6",
                "binary_version": "2.6.0+dfsg-7"
              },
              {
                "binary_name": "python3-torch",
                "binary_version": "2.6.0+dfsg-7"
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          "package": {
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            "purl": "pkg:deb/ubuntu/pytorch?arch=source&distro=stonking",
            "ecosystem": "Ubuntu:26.10"
          },
          "versions": [
            "2.9.1+dfsg-1~exp1ubuntu2",
            "2.12.1+dfsg-1"
          ],
          "database_specific": {
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          },
          "ecosystem_specific": {
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                "binary_name": "libtorch-test",
                "binary_version": "2.12.1+dfsg-1"
              },
              {
                "binary_name": "libtorch2.12",
                "binary_version": "2.12.1+dfsg-1"
              },
              {
                "binary_name": "python3-torch",
                "binary_version": "2.12.1+dfsg-1"
              }
            ]
          }
        },
        {
          "ranges": [
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          "package": {
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            "purl": "pkg:deb/ubuntu/pytorch?arch=source&distro=resolute",
            "ecosystem": "Ubuntu:26.04:LTS"
          },
          "versions": [
            "2.6.0+dfsg-7",
            "2.6.0+dfsg-9",
            "2.9.1+dfsg-1~exp1ubuntu2"
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          "database_specific": {
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          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libtorch-test",
                "binary_version": "2.9.1+dfsg-1~exp1ubuntu2"
              },
              {
                "binary_name": "libtorch2.9",
                "binary_version": "2.9.1+dfsg-1~exp1ubuntu2"
              },
              {
                "binary_name": "python3-torch",
                "binary_version": "2.9.1+dfsg-1~exp1ubuntu2"
              }
            ]
          }
        }
      ],
      "modified": "2026-10-17T12:57:09.360903829Z",
      "provider": "osv",
      "upstream": [
        "CVE-2025-55553"
      ],
      "references": [
        "https://ubuntu.com/security/CVE-2025-55553",
        "https://www.cve.org/CVERecord?id=CVE-2025-55553",
        "https://gist.github.com/shaoyuyoung/0e7d2a586297ae9c8ed14d8706749efc",
        "https://github.com/pytorch/pytorch/issues/151432",
        "https://github.com/pytorch/pytorch/pull/154645"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2025-55553",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 356807,
  "published_at": "2025-09-25T16:15:00+00:00"
}