ubuntu-cve-2025-26434
Vulnerability from osv_ubuntu
Published
2025-09-05 17:15
Modified
2025-09-26 05:12
Summary
Details

In libxml2, there is a possible out of bounds read due to a buffer overflow. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.

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

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxml2",
            "binary_version": "2.9.1+dfsg1-3ubuntu4.13+esm9"
          },
          {
            "binary_name": "libxml2-dev",
            "binary_version": "2.9.1+dfsg1-3ubuntu4.13+esm9"
          },
          {
            "binary_name": "libxml2-utils",
            "binary_version": "2.9.1+dfsg1-3ubuntu4.13+esm9"
          },
          {
            "binary_name": "python-libxml2",
            "binary_version": "2.9.1+dfsg1-3ubuntu4.13+esm9"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "libxml2",
        "purl": "pkg:deb/ubuntu/libxml2@2.9.1+dfsg1-3ubuntu4.13+esm9?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.9.1+dfsg1-3ubuntu2",
        "2.9.1+dfsg1-3ubuntu3",
        "2.9.1+dfsg1-3ubuntu4",
        "2.9.1+dfsg1-3ubuntu4.1",
        "2.9.1+dfsg1-3ubuntu4.2",
        "2.9.1+dfsg1-3ubuntu4.3",
        "2.9.1+dfsg1-3ubuntu4.4",
        "2.9.1+dfsg1-3ubuntu4.5",
        "2.9.1+dfsg1-3ubuntu4.6",
        "2.9.1+dfsg1-3ubuntu4.7",
        "2.9.1+dfsg1-3ubuntu4.8",
        "2.9.1+dfsg1-3ubuntu4.9",
        "2.9.1+dfsg1-3ubuntu4.10",
        "2.9.1+dfsg1-3ubuntu4.11",
        "2.9.1+dfsg1-3ubuntu4.12",
        "2.9.1+dfsg1-3ubuntu4.13",
        "2.9.1+dfsg1-3ubuntu4.13+esm1",
        "2.9.1+dfsg1-3ubuntu4.13+esm2",
        "2.9.1+dfsg1-3ubuntu4.13+esm3",
        "2.9.1+dfsg1-3ubuntu4.13+esm4",
        "2.9.1+dfsg1-3ubuntu4.13+esm5",
        "2.9.1+dfsg1-3ubuntu4.13+esm6",
        "2.9.1+dfsg1-3ubuntu4.13+esm7",
        "2.9.1+dfsg1-3ubuntu4.13+esm8",
        "2.9.1+dfsg1-3ubuntu4.13+esm9"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxml2",
            "binary_version": "2.9.3+dfsg1-1ubuntu0.7+esm10"
          },
          {
            "binary_name": "libxml2-dev",
            "binary_version": "2.9.3+dfsg1-1ubuntu0.7+esm10"
          },
          {
            "binary_name": "libxml2-utils",
            "binary_version": "2.9.3+dfsg1-1ubuntu0.7+esm10"
          },
          {
            "binary_name": "python-libxml2",
            "binary_version": "2.9.3+dfsg1-1ubuntu0.7+esm10"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "libxml2",
        "purl": "pkg:deb/ubuntu/libxml2@2.9.3+dfsg1-1ubuntu0.7+esm10?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.9.2+zdfsg1-4",
        "2.9.2+zdfsg1-4ubuntu1",
        "2.9.2+zdfsg1-4ubuntu2",
        "2.9.2+zdfsg1-4ubuntu3",
        "2.9.3+dfsg1-1",
        "2.9.3+dfsg1-1ubuntu0.1",
        "2.9.3+dfsg1-1ubuntu0.2",
        "2.9.3+dfsg1-1ubuntu0.3",
        "2.9.3+dfsg1-1ubuntu0.4",
        "2.9.3+dfsg1-1ubuntu0.5",
        "2.9.3+dfsg1-1ubuntu0.6",
        "2.9.3+dfsg1-1ubuntu0.7",
        "2.9.3+dfsg1-1ubuntu0.7+esm1",
        "2.9.3+dfsg1-1ubuntu0.7+esm2",
        "2.9.3+dfsg1-1ubuntu0.7+esm3",
        "2.9.3+dfsg1-1ubuntu0.7+esm4",
        "2.9.3+dfsg1-1ubuntu0.7+esm5",
        "2.9.3+dfsg1-1ubuntu0.7+esm6",
        "2.9.3+dfsg1-1ubuntu0.7+esm7",
        "2.9.3+dfsg1-1ubuntu0.7+esm8",
        "2.9.3+dfsg1-1ubuntu0.7+esm9",
        "2.9.3+dfsg1-1ubuntu0.7+esm10"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxml2",
            "binary_version": "2.9.4+dfsg1-6.1ubuntu1.9+esm5"
          },
          {
            "binary_name": "libxml2-dev",
            "binary_version": "2.9.4+dfsg1-6.1ubuntu1.9+esm5"
          },
          {
            "binary_name": "libxml2-utils",
            "binary_version": "2.9.4+dfsg1-6.1ubuntu1.9+esm5"
          },
          {
            "binary_name": "python-libxml2",
            "binary_version": "2.9.4+dfsg1-6.1ubuntu1.9+esm5"
          },
          {
            "binary_name": "python3-libxml2",
            "binary_version": "2.9.4+dfsg1-6.1ubuntu1.9+esm5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "libxml2",
        "purl": "pkg:deb/ubuntu/libxml2@2.9.4+dfsg1-6.1ubuntu1.9+esm5?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
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        "2.9.4+dfsg1-5ubuntu1",
        "2.9.4+dfsg1-5ubuntu2",
        "2.9.4+dfsg1-5.1ubuntu1",
        "2.9.4+dfsg1-5.2ubuntu1",
        "2.9.4+dfsg1-6.1ubuntu1",
        "2.9.4+dfsg1-6.1ubuntu1.2",
        "2.9.4+dfsg1-6.1ubuntu1.3",
        "2.9.4+dfsg1-6.1ubuntu1.4",
        "2.9.4+dfsg1-6.1ubuntu1.5",
        "2.9.4+dfsg1-6.1ubuntu1.6",
        "2.9.4+dfsg1-6.1ubuntu1.7",
        "2.9.4+dfsg1-6.1ubuntu1.8",
        "2.9.4+dfsg1-6.1ubuntu1.9",
        "2.9.4+dfsg1-6.1ubuntu1.9+esm1",
        "2.9.4+dfsg1-6.1ubuntu1.9+esm2",
        "2.9.4+dfsg1-6.1ubuntu1.9+esm3",
        "2.9.4+dfsg1-6.1ubuntu1.9+esm4",
        "2.9.4+dfsg1-6.1ubuntu1.9+esm5"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxml2",
            "binary_version": "2.9.10+dfsg-5ubuntu0.20.04.10+esm2"
          },
          {
            "binary_name": "libxml2-dev",
            "binary_version": "2.9.10+dfsg-5ubuntu0.20.04.10+esm2"
          },
          {
            "binary_name": "libxml2-utils",
            "binary_version": "2.9.10+dfsg-5ubuntu0.20.04.10+esm2"
          },
          {
            "binary_name": "python-libxml2",
            "binary_version": "2.9.10+dfsg-5ubuntu0.20.04.10+esm2"
          },
          {
            "binary_name": "python3-libxml2",
            "binary_version": "2.9.10+dfsg-5ubuntu0.20.04.10+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "libxml2",
        "purl": "pkg:deb/ubuntu/libxml2@2.9.10+dfsg-5ubuntu0.20.04.10+esm2?arch=source\u0026distro=esm-infra/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.9.4+dfsg1-7ubuntu3",
        "2.9.4+dfsg1-7ubuntu5",
        "2.9.4+dfsg1-8ubuntu1",
        "2.9.4+dfsg1-8ubuntu2",
        "2.9.4+dfsg1-8ubuntu3",
        "2.9.10+dfsg-1ubuntu3",
        "2.9.10+dfsg-4build1",
        "2.9.10+dfsg-5",
        "2.9.10+dfsg-5ubuntu0.20.04.1",
        "2.9.10+dfsg-5ubuntu0.20.04.2",
        "2.9.10+dfsg-5ubuntu0.20.04.3",
        "2.9.10+dfsg-5ubuntu0.20.04.4",
        "2.9.10+dfsg-5ubuntu0.20.04.5",
        "2.9.10+dfsg-5ubuntu0.20.04.6",
        "2.9.10+dfsg-5ubuntu0.20.04.7",
        "2.9.10+dfsg-5ubuntu0.20.04.8",
        "2.9.10+dfsg-5ubuntu0.20.04.9",
        "2.9.10+dfsg-5ubuntu0.20.04.10",
        "2.9.10+dfsg-5ubuntu0.20.04.10+esm1",
        "2.9.10+dfsg-5ubuntu0.20.04.10+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxml2",
            "binary_version": "2.9.13+dfsg-1ubuntu0.9"
          },
          {
            "binary_name": "libxml2-dev",
            "binary_version": "2.9.13+dfsg-1ubuntu0.9"
          },
          {
            "binary_name": "libxml2-utils",
            "binary_version": "2.9.13+dfsg-1ubuntu0.9"
          },
          {
            "binary_name": "python3-libxml2",
            "binary_version": "2.9.13+dfsg-1ubuntu0.9"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "libxml2",
        "purl": "pkg:deb/ubuntu/libxml2@2.9.13+dfsg-1ubuntu0.9?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.9.12+dfsg-4",
        "2.9.12+dfsg-5",
        "2.9.12+dfsg-6",
        "2.9.13+dfsg-1",
        "2.9.13+dfsg-1build1",
        "2.9.13+dfsg-1ubuntu0.1",
        "2.9.13+dfsg-1ubuntu0.2",
        "2.9.13+dfsg-1ubuntu0.3",
        "2.9.13+dfsg-1ubuntu0.4",
        "2.9.13+dfsg-1ubuntu0.5",
        "2.9.13+dfsg-1ubuntu0.6",
        "2.9.13+dfsg-1ubuntu0.7",
        "2.9.13+dfsg-1ubuntu0.8",
        "2.9.13+dfsg-1ubuntu0.9"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxml2",
            "binary_version": "2.9.14+dfsg-1.3ubuntu3.5"
          },
          {
            "binary_name": "libxml2-dev",
            "binary_version": "2.9.14+dfsg-1.3ubuntu3.5"
          },
          {
            "binary_name": "libxml2-utils",
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          },
          {
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            "binary_version": "2.9.14+dfsg-1.3ubuntu3.5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "libxml2",
        "purl": "pkg:deb/ubuntu/libxml2@2.9.14+dfsg-1.3ubuntu3.5?arch=source\u0026distro=noble"
      },
      "ranges": [
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        "2.9.14+dfsg-1.3build2",
        "2.9.14+dfsg-1.3build3",
        "2.9.14+dfsg-1.3ubuntu1",
        "2.9.14+dfsg-1.3ubuntu2",
        "2.9.14+dfsg-1.3ubuntu3",
        "2.9.14+dfsg-1.3ubuntu3.1",
        "2.9.14+dfsg-1.3ubuntu3.2",
        "2.9.14+dfsg-1.3ubuntu3.3",
        "2.9.14+dfsg-1.3ubuntu3.4",
        "2.9.14+dfsg-1.3ubuntu3.5"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxml2",
            "binary_version": "2.12.7+dfsg+really2.9.14-0.4ubuntu0.3"
          },
          {
            "binary_name": "libxml2-dev",
            "binary_version": "2.12.7+dfsg+really2.9.14-0.4ubuntu0.3"
          },
          {
            "binary_name": "libxml2-utils",
            "binary_version": "2.12.7+dfsg+really2.9.14-0.4ubuntu0.3"
          },
          {
            "binary_name": "python3-libxml2",
            "binary_version": "2.12.7+dfsg+really2.9.14-0.4ubuntu0.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.04",
        "name": "libxml2",
        "purl": "pkg:deb/ubuntu/libxml2@2.12.7+dfsg+really2.9.14-0.4ubuntu0.3?arch=source\u0026distro=plucky"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
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          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.12.7+dfsg-3",
        "2.12.7+dfsg+really2.9.14-0.2build1",
        "2.12.7+dfsg+really2.9.14-0.2ubuntu2",
        "2.12.7+dfsg+really2.9.14-0.2ubuntu3",
        "2.12.7+dfsg+really2.9.14-0.2ubuntu4",
        "2.12.7+dfsg+really2.9.14-0.2ubuntu5",
        "2.12.7+dfsg+really2.9.14-0.4",
        "2.12.7+dfsg+really2.9.14-0.4ubuntu0.1",
        "2.12.7+dfsg+really2.9.14-0.4ubuntu0.2",
        "2.12.7+dfsg+really2.9.14-0.4ubuntu0.3"
      ]
    }
  ],
  "aliases": [],
  "details": "In libxml2, there is a possible out of bounds read due to a buffer overflow. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.",
  "id": "UBUNTU-CVE-2025-26434",
  "modified": "2025-09-26T05:12:22Z",
  "published": "2025-09-05T17:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-26434"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-26434"
    },
    {
      "type": "REPORT",
      "url": "https://source.android.com/docs/security/bulletin/android-16"
    },
    {
      "type": "REPORT",
      "url": "https://source.android.com/security/bulletin/android-16"
    },
    {
      "type": "REPORT",
      "url": "https://gitlab.gnome.org/GNOME/libxml2/-/issues/797"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2025-26434"
  ],
  "withdrawn": "2025-10-02T05:19:16Z"
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.