ubuntu-cve-2026-42250
Vulnerability from osv_ubuntu
Published
2026-05-28 14:16
Modified
2026-06-08 07:53
Summary
Details

bzip2 contains an off‑by‑one error in the bzip2recover utility. When processing a specially crafted file, the application performs an out‑of‑bounds write to a global buffer, resulting in memory corruption and a crash (denial of service). This issue was fixed in bzip2 patch 35d122a3df8b0cc4082a4d89fdc6ee99f375fe67

Severity
4.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
N/A (UNKNOWN)
low
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "bzip2",
            "binary_version": "1.0.6-5ubuntu0.1~esm2"
          },
          {
            "binary_name": "lib32bz2-1.0",
            "binary_version": "1.0.6-5ubuntu0.1~esm2"
          },
          {
            "binary_name": "lib64bz2-1.0",
            "binary_version": "1.0.6-5ubuntu0.1~esm2"
          },
          {
            "binary_name": "libbz2-1.0",
            "binary_version": "1.0.6-5ubuntu0.1~esm2"
          }
        ],
        "priority_reason": "Only a denial of service in a command line utility"
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "bzip2",
        "purl": "pkg:deb/ubuntu/bzip2@1.0.6-5ubuntu0.1~esm2?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.6-4",
        "1.0.6-5",
        "1.0.6-5ubuntu0.1~esm1",
        "1.0.6-5ubuntu0.1~esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "bzip2",
            "binary_version": "1.0.6-8ubuntu0.2"
          },
          {
            "binary_name": "libbz2-1.0",
            "binary_version": "1.0.6-8ubuntu0.2"
          }
        ],
        "priority_reason": "Only a denial of service in a command line utility"
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "bzip2",
        "purl": "pkg:deb/ubuntu/bzip2@1.0.6-8ubuntu0.2?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.6-8",
        "1.0.6-8ubuntu0.1",
        "1.0.6-8ubuntu0.2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "bzip2",
            "binary_version": "1.0.6-8.1ubuntu0.2"
          },
          {
            "binary_name": "libbz2-1.0",
            "binary_version": "1.0.6-8.1ubuntu0.2"
          }
        ],
        "priority_reason": "Only a denial of service in a command line utility"
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "bzip2",
        "purl": "pkg:deb/ubuntu/bzip2@1.0.6-8.1ubuntu0.2?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.6-8.1",
        "1.0.6-8.1ubuntu0.1",
        "1.0.6-8.1ubuntu0.2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "bzip2",
            "binary_version": "1.0.8-2"
          },
          {
            "binary_name": "libbz2-1.0",
            "binary_version": "1.0.8-2"
          }
        ],
        "priority_reason": "Only a denial of service in a command line utility"
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "bzip2",
        "purl": "pkg:deb/ubuntu/bzip2@1.0.8-2?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.6-9.2",
        "1.0.8-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "bzip2",
            "binary_version": "1.0.8-5build1"
          },
          {
            "binary_name": "libbz2-1.0",
            "binary_version": "1.0.8-5build1"
          }
        ],
        "priority_reason": "Only a denial of service in a command line utility"
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "bzip2",
        "purl": "pkg:deb/ubuntu/bzip2@1.0.8-5build1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.8-4ubuntu3",
        "1.0.8-4ubuntu4",
        "1.0.8-5",
        "1.0.8-5build1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "bzip2",
            "binary_version": "1.0.8-5.1build0.1"
          },
          {
            "binary_name": "libbz2-1.0",
            "binary_version": "1.0.8-5.1build0.1"
          }
        ],
        "priority_reason": "Only a denial of service in a command line utility"
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "bzip2",
        "purl": "pkg:deb/ubuntu/bzip2@1.0.8-5.1build0.1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.8-5build1",
        "1.0.8-5ubuntu1",
        "1.0.8-5.1",
        "1.0.8-5.1build0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "bzip2",
            "binary_version": "1.0.8-6build1"
          },
          {
            "binary_name": "libbz2-1.0",
            "binary_version": "1.0.8-6build1"
          }
        ],
        "priority_reason": "Only a denial of service in a command line utility"
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "bzip2",
        "purl": "pkg:deb/ubuntu/bzip2@1.0.8-6build1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.8-6",
        "1.0.8-6build1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "bzip2",
            "binary_version": "1.0.8-6build2"
          },
          {
            "binary_name": "libbz2-1.0",
            "binary_version": "1.0.8-6build2"
          }
        ],
        "priority_reason": "Only a denial of service in a command line utility"
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "bzip2",
        "purl": "pkg:deb/ubuntu/bzip2@1.0.8-6build2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.8-6build1",
        "1.0.8-6build2"
      ]
    }
  ],
  "aliases": [],
  "details": "bzip2 contains an off\u2011by\u2011one error in the bzip2recover utility. When processing a specially crafted file, the application performs an out\u2011of\u2011bounds write to a global buffer, resulting in memory corruption and a crash (denial of service). This issue was fixed in bzip2 patch\u00a035d122a3df8b0cc4082a4d89fdc6ee99f375fe67",
  "id": "UBUNTU-CVE-2026-42250",
  "modified": "2026-06-08T07:53:13Z",
  "published": "2026-05-28T14:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-42250"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-42250"
    },
    {
      "type": "REPORT",
      "url": "https://cert.pl/en/posts/2026/05/CVE-2026-42250/"
    },
    {
      "type": "REPORT",
      "url": "https://inbox.sourceware.org/bzip2-devel/20260528145407.293768-1-mark@klomp.org/"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-42250"
  ]
}



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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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