vuln-ubuntu/data/osv/cve/2026/UBUNTU-CVE-2026-40468.json

{
  "schema_version": "1.7.0",
  "id": "UBUNTU-CVE-2026-40468",
  "details": "Integer overflow vulnerability has been found in \"builtin.c\" program file of gawk. This issue may lead to memory exhaustion on the hosting operating system and could be used to overwrite gawk heap metadata and objects with attacker-controlled bytes. It affects\u00a0gawk in versions 5.4.0 and below.",
  "aliases": [],
  "upstream": [
    "CVE-2026-40468"
  ],
  "related": [
    "USN-8588-1"
  ],
  "severity": [
    {
      "type": "CVSS_V4",
      "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:L"
    },
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H"
    },
    {
      "type": "Ubuntu",
      "score": "medium"
    }
  ],
  "published": "2026-07-13T13:16:00Z",
  "modified": "2026-07-22T23:18:24Z",
  "affected": [
    {
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "gawk",
        "purl": "pkg:deb/ubuntu/gawk@1:4.0.1+dfsg-2.1ubuntu2+esm2?arch=source&distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:4.0.1+dfsg-2.1ubuntu2+esm2"
            }
          ]
        }
      ],
      "versions": [
        "1:4.0.1+dfsg-2.1ubuntu2",
        "1:4.0.1+dfsg-2.1ubuntu2+esm1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gawk",
            "binary_version": "1:4.0.1+dfsg-2.1ubuntu2+esm2"
          }
        ],
        "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"
      }
    },
    {
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "gawk",
        "purl": "pkg:deb/ubuntu/gawk@1:4.1.3+dfsg-0.1ubuntu0.1~esm2?arch=source&distro=esm-infra-legacy/xenial"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:4.1.3+dfsg-0.1ubuntu0.1~esm2"
            }
          ]
        }
      ],
      "versions": [
        "1:4.1.1+dfsg-1",
        "1:4.1.3+dfsg-0.1",
        "1:4.1.3+dfsg-0.1ubuntu0.1~esm1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gawk",
            "binary_version": "1:4.1.3+dfsg-0.1ubuntu0.1~esm2"
          }
        ],
        "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"
      }
    },
    {
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "gawk",
        "purl": "pkg:deb/ubuntu/gawk@1:4.1.4+dfsg-1ubuntu0.1~esm2?arch=source&distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:4.1.4+dfsg-1ubuntu0.1~esm2"
            }
          ]
        }
      ],
      "versions": [
        "1:4.1.4+dfsg-1",
        "1:4.1.4+dfsg-1build1",
        "1:4.1.4+dfsg-1ubuntu0.1~esm1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gawk",
            "binary_version": "1:4.1.4+dfsg-1ubuntu0.1~esm2"
          }
        ],
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
      }
    },
    {
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "gawk",
        "purl": "pkg:deb/ubuntu/gawk@1:5.0.1+dfsg-1ubuntu0.1+esm1?arch=source&distro=esm-infra/focal"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:5.0.1+dfsg-1ubuntu0.1+esm1"
            }
          ]
        }
      ],
      "versions": [
        "1:4.2.1+dfsg-1.1build1",
        "1:5.0.1+dfsg-1",
        "1:5.0.1+dfsg-1ubuntu0.1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gawk",
            "binary_version": "1:5.0.1+dfsg-1ubuntu0.1+esm1"
          }
        ],
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
      }
    },
    {
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "gawk",
        "purl": "pkg:deb/ubuntu/gawk@1:5.1.0-1ubuntu0.2?arch=source&distro=jammy"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:5.1.0-1ubuntu0.2"
            }
          ]
        }
      ],
      "versions": [
        "1:5.1.0-1build1",
        "1:5.1.0-1build2",
        "1:5.1.0-1build3",
        "1:5.1.0-1ubuntu0.1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gawk",
            "binary_version": "1:5.1.0-1ubuntu0.2"
          }
        ],
        "availability": "No subscription required"
      }
    },
    {
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "gawk",
        "purl": "pkg:deb/ubuntu/gawk@1:5.2.1-2ubuntu0.1?arch=source&distro=noble"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:5.2.1-2ubuntu0.1"
            }
          ]
        }
      ],
      "versions": [
        "1:5.2.1-2",
        "1:5.2.1-2build2",
        "1:5.2.1-2build3"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gawk",
            "binary_version": "1:5.2.1-2ubuntu0.1"
          }
        ],
        "availability": "No subscription required"
      }
    },
    {
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "gawk",
        "purl": "pkg:deb/ubuntu/gawk@1:5.3.2-1ubuntu1.1?arch=source&distro=resolute"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:5.3.2-1ubuntu1.1"
            }
          ]
        }
      ],
      "versions": [
        "1:5.3.2-1build1",
        "1:5.3.2-1ubuntu1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gawk",
            "binary_version": "1:5.3.2-1ubuntu1.1"
          }
        ],
        "availability": "No subscription required"
      }
    }
  ],
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-40468"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-40468"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8588-1"
    }
  ]
}