ubuntu-cve-2026-40200
Vulnerability from osv_ubuntu
Published
2026-04-10 17:17
Modified
2026-05-20 15:27
Summary
Details

An issue was discovered in musl libc 0.7.10 through 1.2.6. Stack-based memory corruption can occur during qsort of very large arrays, due to incorrectly implemented double-word primitives. The number of elements must exceed about seven million, i.e., the 32nd Leonardo number on 32-bit platforms (or the 64th Leonardo number on 64-bit platforms, which is not practical).

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

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "musl",
            "binary_version": "0.9.15-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "musl-tools",
            "binary_version": "0.9.15-1ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "musl",
        "purl": "pkg:deb/ubuntu/musl@0.9.15-1ubuntu0.1~esm2?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.9.14-2",
        "0.9.14-2ubuntu1",
        "0.9.15-1",
        "0.9.15-1ubuntu0.1~esm1",
        "0.9.15-1ubuntu0.1~esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "musl",
            "binary_version": "1.1.9-1ubuntu0.1~esm3"
          },
          {
            "binary_name": "musl-tools",
            "binary_version": "1.1.9-1ubuntu0.1~esm3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "musl",
        "purl": "pkg:deb/ubuntu/musl@1.1.9-1ubuntu0.1~esm3?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.9-1",
        "1.1.9-1ubuntu0.1~esm2",
        "1.1.9-1ubuntu0.1~esm3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "musl",
            "binary_version": "1.1.19-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "musl-tools",
            "binary_version": "1.1.19-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "musl",
        "purl": "pkg:deb/ubuntu/musl@1.1.19-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.16-3",
        "1.1.18-1",
        "1.1.19-1",
        "1.1.19-1ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "musl",
            "binary_version": "1.1.24-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "musl-tools",
            "binary_version": "1.1.24-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "musl",
        "purl": "pkg:deb/ubuntu/musl@1.1.24-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.23-2build1",
        "1.1.24-1",
        "1.1.24-1ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "musl",
            "binary_version": "1.2.2-4"
          },
          {
            "binary_name": "musl-tools",
            "binary_version": "1.2.2-4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "musl",
        "purl": "pkg:deb/ubuntu/musl@1.2.2-4?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.2.2-1",
        "1.2.2-4"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "musl",
            "binary_version": "1.2.4-2"
          },
          {
            "binary_name": "musl-tools",
            "binary_version": "1.2.4-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "musl",
        "purl": "pkg:deb/ubuntu/musl@1.2.4-2?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.2.3-1",
        "1.2.4-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "musl",
            "binary_version": "1.2.5-3"
          },
          {
            "binary_name": "musl-tools",
            "binary_version": "1.2.5-3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "musl",
        "purl": "pkg:deb/ubuntu/musl@1.2.5-3?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.2.5-2",
        "1.2.5-3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "musl",
            "binary_version": "1.2.5-3build1"
          },
          {
            "binary_name": "musl-tools",
            "binary_version": "1.2.5-3build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "musl",
        "purl": "pkg:deb/ubuntu/musl@1.2.5-3build1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.2.5-3",
        "1.2.5-3build1"
      ]
    }
  ],
  "aliases": [],
  "details": "An issue was discovered in musl libc 0.7.10 through 1.2.6. Stack-based memory corruption can occur during qsort of very large arrays, due to incorrectly implemented double-word primitives. The number of elements must exceed about seven million, i.e., the 32nd Leonardo number on 32-bit platforms (or the 64th Leonardo number on 64-bit platforms, which is not practical).",
  "id": "UBUNTU-CVE-2026-40200",
  "modified": "2026-05-20T15:27:25Z",
  "published": "2026-04-10T17:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-40200"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-40200"
    },
    {
      "type": "REPORT",
      "url": "https://www.openwall.com/lists/oss-security/2026/04/10/13"
    },
    {
      "type": "REPORT",
      "url": "https://musl.libc.org/releases.html"
    },
    {
      "type": "REPORT",
      "url": "http://www.openwall.com/lists/oss-security/2026/04/10/13"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-40200"
  ]
}



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