ubuntu-cve-2026-47143
Vulnerability from osv_ubuntu
Published
2026-07-21 21:16
Modified
2026-07-29 07:58
Summary
Details

Capstone is a disassembly framework. Versions prior to 6.0.0-Alpha8 and 5.0.8 have a NULL pointer dereference in modRMRequired() and decode() when disassembling 3DNow! opcodes (0F 0F) in builds compiled with -DCAPSTONE_X86_REDUCE, allowing a remote attacker to crash any application using the reduced X86 Capstone library by supplying a crafted input containing the 4-byte sequence 0F 0F <modrm> <imm8>. Versions 6.0.0-Alpha8 and 5.0.8 patch the issue.

Severity
5.1 (Medium)
CVSS:3.1/AV:L/AC:H/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": "libcapstone3",
            "binary_version": "3.0.4-0.2"
          },
          {
            "binary_name": "python-capstone",
            "binary_version": "3.0.4-0.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "capstone",
        "purl": "pkg:deb/ubuntu/capstone@3.0.4-0.2?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.0.4-0.1",
        "3.0.4-0.2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libcapstone3",
            "binary_version": "3.0.4-5"
          },
          {
            "binary_name": "python-capstone",
            "binary_version": "3.0.4-5"
          },
          {
            "binary_name": "python3-capstone",
            "binary_version": "3.0.4-5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "capstone",
        "purl": "pkg:deb/ubuntu/capstone@3.0.4-5?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.0.4-3",
        "3.0.4-5"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "capstone-tool",
            "binary_version": "4.0.1+really+3.0.5-1build1"
          },
          {
            "binary_name": "libcapstone3",
            "binary_version": "4.0.1+really+3.0.5-1build1"
          },
          {
            "binary_name": "python-capstone",
            "binary_version": "4.0.1+really+3.0.5-1build1"
          },
          {
            "binary_name": "python3-capstone",
            "binary_version": "4.0.1+really+3.0.5-1build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "capstone",
        "purl": "pkg:deb/ubuntu/capstone@4.0.1+really+3.0.5-1build1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.0.1+really+3.0.5-1",
        "4.0.1+really+3.0.5-1build1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "capstone-tool",
            "binary_version": "4.0.2-5"
          },
          {
            "binary_name": "libcapstone4",
            "binary_version": "4.0.2-5"
          },
          {
            "binary_name": "python3-capstone",
            "binary_version": "4.0.2-5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "capstone",
        "purl": "pkg:deb/ubuntu/capstone@4.0.2-5?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.0.2-3",
        "4.0.2-3build1",
        "4.0.2-5"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "capstone-tool",
            "binary_version": "4.0.2-5.1build1"
          },
          {
            "binary_name": "libcapstone4",
            "binary_version": "4.0.2-5.1build1"
          },
          {
            "binary_name": "python3-capstone",
            "binary_version": "4.0.2-5.1build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "capstone",
        "purl": "pkg:deb/ubuntu/capstone@4.0.2-5.1build1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.0.2-5",
        "4.0.2-5ubuntu1",
        "4.0.2-5.1",
        "4.0.2-5.1build1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "capstone-tool",
            "binary_version": "5.0.7-2"
          },
          {
            "binary_name": "libcapstone5",
            "binary_version": "5.0.7-2"
          },
          {
            "binary_name": "python3-capstone",
            "binary_version": "5.0.7-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "capstone",
        "purl": "pkg:deb/ubuntu/capstone@5.0.7-2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.0.6-1",
        "5.0.6-1build1",
        "5.0.7-2"
      ]
    }
  ],
  "aliases": [],
  "details": "Capstone is a disassembly framework. Versions prior to 6.0.0-Alpha8 and 5.0.8 have a NULL pointer dereference in `modRMRequired()` and `decode()` when disassembling 3DNow! opcodes (`0F 0F`) in builds compiled with `-DCAPSTONE_X86_REDUCE`, allowing a remote attacker to crash any application using the reduced X86 Capstone library by supplying a crafted input containing the 4-byte sequence `0F 0F \u003cmodrm\u003e \u003cimm8\u003e`. Versions 6.0.0-Alpha8 and 5.0.8 patch the issue.",
  "id": "UBUNTU-CVE-2026-47143",
  "modified": "2026-07-29T07:58:05Z",
  "published": "2026-07-21T21:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-47143"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-47143"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-47143"
  ]
}



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