UBUNTU-CVE-2026-120454 (CVE-2026-120454)

Vulnerability from osv_ubuntu – Published: 2026-11-02 15:17 – Updated: 2026-11-05 04:42 – Source website
VLAI
Details

The Sleuth Kit through 4.15.0 contains a NULL pointer dereference vulnerability in decmpfs_decompress_lzvn_attr() that allows attackers to crash the tool by supplying a crafted HFS+ image. Attackers can set a huge uncompressed_size in an LZVN inline com.apple.decmpfs attribute so allocation fails and the decoder writes through NULL, causing denial of service.

Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
6.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libtsk3-3",
            "binary_version": "3.2.3-2.2ubuntu0.1~esm1"
          },
          {
            "binary_name": "sleuthkit",
            "binary_version": "3.2.3-2.2ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "sleuthkit",
        "purl": "pkg:deb/ubuntu/sleuthkit@3.2.3-2.2ubuntu0.1~esm1?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.2.3-2ubuntu1",
        "3.2.3-2ubuntu2",
        "3.2.3-2.1",
        "3.2.3-2.2",
        "3.2.3-2.2ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libtsk13",
            "binary_version": "4.2.0-3ubuntu0.1~esm1"
          },
          {
            "binary_name": "sleuthkit",
            "binary_version": "4.2.0-3ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "sleuthkit",
        "purl": "pkg:deb/ubuntu/sleuthkit@4.2.0-3ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.1.3-11ubuntu2",
        "4.1.3-12ubuntu1",
        "4.2.0-3",
        "4.2.0-3ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libtsk13",
            "binary_version": "4.4.2-3"
          },
          {
            "binary_name": "sleuthkit",
            "binary_version": "4.4.2-3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "sleuthkit",
        "purl": "pkg:deb/ubuntu/sleuthkit@4.4.2-3?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.4.2-1",
        "4.4.2-3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libtsk13",
            "binary_version": "4.6.7-1build1"
          },
          {
            "binary_name": "sleuthkit",
            "binary_version": "4.6.7-1build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "sleuthkit",
        "purl": "pkg:deb/ubuntu/sleuthkit@4.6.7-1build1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.6.5-1",
        "4.6.7-1",
        "4.6.7-1build1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libtsk19",
            "binary_version": "4.11.1+dfsg-1"
          },
          {
            "binary_name": "sleuthkit",
            "binary_version": "4.11.1+dfsg-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "sleuthkit",
        "purl": "pkg:deb/ubuntu/sleuthkit@4.11.1+dfsg-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.10.1+dfsg-1",
        "4.11.0+dfsg-1",
        "4.11.1+dfsg-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libtsk19t64",
            "binary_version": "4.12.1+dfsg-1.1ubuntu2"
          },
          {
            "binary_name": "sleuthkit",
            "binary_version": "4.12.1+dfsg-1.1ubuntu2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "sleuthkit",
        "purl": "pkg:deb/ubuntu/sleuthkit@4.12.1+dfsg-1.1ubuntu2?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.12.0+dfsg-1",
        "4.12.1+dfsg-1",
        "4.12.1+dfsg-1.1ubuntu1",
        "4.12.1+dfsg-1.1ubuntu2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libtsk23",
            "binary_version": "4.14.0+dfsg-1"
          },
          {
            "binary_name": "sleuthkit",
            "binary_version": "4.14.0+dfsg-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.10",
        "name": "sleuthkit",
        "purl": "pkg:deb/ubuntu/sleuthkit@4.14.0+dfsg-1?arch=source\u0026distro=stonking"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.12.1+dfsg-3build1",
        "4.14.0+dfsg-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libtsk19t64",
            "binary_version": "4.12.1+dfsg-3build1"
          },
          {
            "binary_name": "sleuthkit",
            "binary_version": "4.12.1+dfsg-3build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "sleuthkit",
        "purl": "pkg:deb/ubuntu/sleuthkit@4.12.1+dfsg-3build1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.12.1+dfsg-3",
        "4.12.1+dfsg-3build1"
      ]
    }
  ],
  "aliases": [],
  "details": "The Sleuth Kit through 4.15.0 contains a NULL pointer dereference vulnerability in decmpfs_decompress_lzvn_attr() that allows attackers to crash the tool by supplying a crafted HFS+ image. Attackers can set a huge uncompressed_size in an LZVN inline com.apple.decmpfs attribute so allocation fails and the decoder writes through NULL, causing denial of service.",
  "id": "UBUNTU-CVE-2026-120454",
  "modified": "2026-11-05T04:42:52Z",
  "published": "2026-11-02T15:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-120454"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-120454"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/sleuthkit/sleuthkit/blob/sleuthkit-4.15.0/tsk/fs/decmpfs.c#L1154-L1169"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/sleuthkit/sleuthkit/issues/3583"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/sleuthkit/sleuthkit/releases/tag/sleuthkit-4.15.0"
    },
    {
      "type": "REPORT",
      "url": "https://hackmd.io/@haindpwn/sleuthkit-hfs-decmpfs-attr-oob-read"
    },
    {
      "type": "REPORT",
      "url": "https://www.vulncheck.com/advisories/the-sleuth-kit-through-4.15.0-null-pointer-dereference-via-decmpfs-lzvn-decompression"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-120454"
  ]
}



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