ubuntu-cve-2026-44602
Vulnerability from osv_ubuntu
Published
2026-05-07 04:16
Modified
2026-05-20 15:28
Summary
Details

Tor before 0.4.9.7 has a NULL pointer dereference when a CERT cell is received out of order, aka TROVE-2026-006.

Severity
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "tor",
            "binary_version": "0.2.4.27-1ubuntu0.1+esm2"
          },
          {
            "binary_name": "tor-geoipdb",
            "binary_version": "0.2.4.27-1ubuntu0.1+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "tor",
        "purl": "pkg:deb/ubuntu/tor@0.2.4.27-1ubuntu0.1+esm2?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.2.3.25-1",
        "0.2.4.19-1",
        "0.2.4.20-1",
        "0.2.4.27-1build0.14.04.1",
        "0.2.4.27-1ubuntu0.1",
        "0.2.4.27-1ubuntu0.1+esm1",
        "0.2.4.27-1ubuntu0.1+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "tor",
            "binary_version": "0.2.9.14-1ubuntu1~16.04.3+esm1"
          },
          {
            "binary_name": "tor-geoipdb",
            "binary_version": "0.2.9.14-1ubuntu1~16.04.3+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "tor",
        "purl": "pkg:deb/ubuntu/tor@0.2.9.14-1ubuntu1~16.04.3+esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.2.6.10-1ubuntu2",
        "0.2.7.6-1ubuntu1",
        "0.2.9.11-1ubuntu1~16.04.1",
        "0.2.9.14-1ubuntu1~16.04.1",
        "0.2.9.14-1ubuntu1~16.04.2",
        "0.2.9.14-1ubuntu1~16.04.3",
        "0.2.9.14-1ubuntu1~16.04.3+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "tor",
            "binary_version": "0.3.2.10-1ubuntu0.2~esm2"
          },
          {
            "binary_name": "tor-geoipdb",
            "binary_version": "0.3.2.10-1ubuntu0.2~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "tor",
        "purl": "pkg:deb/ubuntu/tor@0.3.2.10-1ubuntu0.2~esm2?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.3.0.10-1",
        "0.3.1.8-2",
        "0.3.1.9-1",
        "0.3.2.9-1",
        "0.3.2.9-1build1",
        "0.3.2.10-1",
        "0.3.2.10-1ubuntu0.1",
        "0.3.2.10-1ubuntu0.2~esm1",
        "0.3.2.10-1ubuntu0.2~esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "tor",
            "binary_version": "0.4.2.7-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "tor-geoipdb",
            "binary_version": "0.4.2.7-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "tor",
        "purl": "pkg:deb/ubuntu/tor@0.4.2.7-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.4.1.5-1",
        "0.4.1.5-1build1",
        "0.4.1.6-1",
        "0.4.2.5-1",
        "0.4.2.6-1",
        "0.4.2.7-1",
        "0.4.2.7-1ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "tor",
            "binary_version": "0.4.6.10-1"
          },
          {
            "binary_name": "tor-geoipdb",
            "binary_version": "0.4.6.10-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "tor",
        "purl": "pkg:deb/ubuntu/tor@0.4.6.10-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.4.5.9-1",
        "0.4.6.8-1",
        "0.4.6.8-1build1",
        "0.4.6.9-1",
        "0.4.6.10-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "tor",
            "binary_version": "0.4.8.10-1build2"
          },
          {
            "binary_name": "tor-geoipdb",
            "binary_version": "0.4.8.10-1build2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "tor",
        "purl": "pkg:deb/ubuntu/tor@0.4.8.10-1build2?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.4.8.4-2",
        "0.4.8.7-1",
        "0.4.8.9-1",
        "0.4.8.10-1",
        "0.4.8.10-1build1",
        "0.4.8.10-1build2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "tor",
            "binary_version": "0.4.8.16-1"
          },
          {
            "binary_name": "tor-geoipdb",
            "binary_version": "0.4.8.16-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "tor",
        "purl": "pkg:deb/ubuntu/tor@0.4.8.16-1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.4.8.14-1",
        "0.4.8.16-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "tor",
            "binary_version": "0.4.9.6-1"
          },
          {
            "binary_name": "tor-geoipdb",
            "binary_version": "0.4.9.6-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "tor",
        "purl": "pkg:deb/ubuntu/tor@0.4.9.6-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.4.8.16-1",
        "0.4.8.21-1",
        "0.4.8.22-1",
        "0.4.9.6-1"
      ]
    }
  ],
  "aliases": [],
  "details": "Tor before 0.4.9.7 has a NULL pointer dereference when a CERT cell is received out of order, aka TROVE-2026-006.",
  "id": "UBUNTU-CVE-2026-44602",
  "modified": "2026-05-20T15:28:57Z",
  "published": "2026-05-07T04:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-44602"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-44602"
    },
    {
      "type": "REPORT",
      "url": "https://forum.torproject.org/c/news/tor-release-announcement/28"
    },
    {
      "type": "REPORT",
      "url": "https://www.openwall.com/lists/oss-security/2026/05/06/8"
    },
    {
      "type": "REPORT",
      "url": "https://gitlab.torproject.org/tpo/core/tor/-/work_items/41240"
    },
    {
      "type": "REPORT",
      "url": "https://gitlab.torproject.org/tpo/core/tor/-/commit/df7d5174ef41814d806c8ede776e230cd30ac12b"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "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": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-44602"
  ]
}



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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.