{
  "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-2026-23083",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-23083",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-02-04T16:08:07.561Z",
    "updatedAt": "2026-10-19T18:25:29.638Z",
    "importedAt": "2026-10-24T01:58:02.025Z",
    "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": "fou: Don't allow 0 for FOU_ATTR_IPPROTO.",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nfou: Don't allow 0 for FOU_ATTR_IPPROTO.\n\nfou_udp_recv() has the same problem mentioned in the previous\npatch.\n\nIf FOU_ATTR_IPPROTO is set to 0, skb is not freed by\nfou_udp_recv() nor \"resubmit\"-ted in ip_protocol_deliver_rcu().\n\nLet's forbid 0 for FOU_ATTR_IPPROTO.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "23461551c00628c3f3fe9cf837bf53cf8f212b63",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c7498f9bc390479ccfad7c7f2332237ff4945b03"
            },
            {
              "version": "23461551c00628c3f3fe9cf837bf53cf8f212b63",
              "status": "affected",
              "versionType": "git",
              "lessThan": "611ef4bd9c73d9e6d87bed57a635ff1fdd8c91ea"
            },
            {
              "version": "23461551c00628c3f3fe9cf837bf53cf8f212b63",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6e983789b7588ee59cbf303583546c043bad8e19"
            },
            {
              "version": "23461551c00628c3f3fe9cf837bf53cf8f212b63",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1cc98b8887cabb1808d2f4a37cd10a7be7574771"
            },
            {
              "version": "23461551c00628c3f3fe9cf837bf53cf8f212b63",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b7db31a52c3862a1a32202a273a4c32e7f5f4823"
            },
            {
              "version": "23461551c00628c3f3fe9cf837bf53cf8f212b63",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9b75dff8446ec871030d8daf5a69e74f5fe8b956"
            },
            {
              "version": "23461551c00628c3f3fe9cf837bf53cf8f212b63",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7a9bc9e3f42391e4c187e099263cf7a1c4b69ff5"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.18",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.18"
            },
            {
              "version": "5.10.249",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.199",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.162",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.122",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.68",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.8",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "6.19",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}