{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-80586",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-80586",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-26T14:37:41.493Z",
    "updatedAt": "2026-10-16T19:26:28.632Z",
    "importedAt": "2026-10-24T01:58:30.346Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "mptcp: options: reset DSS fields in case of unexpected size",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: options: reset DSS fields in case of unexpected size\n\nA remote peer could send a malformed DSS with a wrong size, followed by\nanother DSS or MPC + Data. In this case, the first suboption will be\nignored, but leaving some fields written, which could lead to\ninconsistency or access uninitialized data.\n\nExplicitly reset the fields that could have been modified in case of\nunexpected size.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "648ef4b88673dadb8463bf0d4b10fbf33d55def8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "15e35fdad7a5576bf3f1c8d688877aeb5d1b506b"
            },
            {
              "version": "648ef4b88673dadb8463bf0d4b10fbf33d55def8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b1256090816ec46011601e084be580731df58fc7"
            },
            {
              "version": "648ef4b88673dadb8463bf0d4b10fbf33d55def8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "192878df582c51d440bf7b91a15f297f29f2b596"
            },
            {
              "version": "648ef4b88673dadb8463bf0d4b10fbf33d55def8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "26dac5c9ffb20812b475fdf253eb04fab99cff3b"
            },
            {
              "version": "648ef4b88673dadb8463bf0d4b10fbf33d55def8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4e80eff5c1c893aca2ac1d202f0b256d2e52ecde"
            },
            {
              "version": "648ef4b88673dadb8463bf0d4b10fbf33d55def8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1fade1b2ac5b1a4948e538fae7313bea57b5ac36"
            },
            {
              "version": "648ef4b88673dadb8463bf0d4b10fbf33d55def8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "27ed642a4e7e4b5df4b8522c72c457a67e052493"
            },
            {
              "version": "648ef4b88673dadb8463bf0d4b10fbf33d55def8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "35772b4981f38ba8059372cde8753e8e477e98ec"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.6",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.6"
            },
            {
              "version": "5.10.266",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.217",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.184",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.153",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.105",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.46",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.10",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}