{
  "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-2026-43452",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-43452",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-05-08T14:22:17.361Z",
    "updatedAt": "2026-10-19T19:26:36.945Z",
    "importedAt": "2026-10-24T01:58:14.884Z",
    "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": "netfilter: x_tables: guard option walkers against 1-byte tail reads",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: x_tables: guard option walkers against 1-byte tail reads\n\nWhen the last byte of options is a non-single-byte option kind, walkers\nthat advance with i += op[i + 1] ? : 1 can read op[i + 1] past the end\nof the option area.\n\nAdd an explicit i == optlen - 1 check before dereferencing op[i + 1]\nin xt_tcpudp and xt_dccp option walkers.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "2e4e6a17af35be359cc8f1c924f8f198fbd478cc",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c2a445367a496a3c25dbc940c10c8bd1cfd4c14a"
            },
            {
              "version": "2e4e6a17af35be359cc8f1c924f8f198fbd478cc",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ae1e1267650638136b84c23f2b31250f0ccb6823"
            },
            {
              "version": "2e4e6a17af35be359cc8f1c924f8f198fbd478cc",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c39f84e4be1be63fc60ca7141ea7b76edcea5907"
            },
            {
              "version": "2e4e6a17af35be359cc8f1c924f8f198fbd478cc",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9b94f0e42ed248eb31929da84ed9f5310d7ff540"
            },
            {
              "version": "2e4e6a17af35be359cc8f1c924f8f198fbd478cc",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5b18b8b35c7cded2d17b2b2604c9b0694ff48d1c"
            },
            {
              "version": "2e4e6a17af35be359cc8f1c924f8f198fbd478cc",
              "status": "affected",
              "versionType": "git",
              "lessThan": "bc18551c6169eac5ed813778d3e3e484002dbbe5"
            },
            {
              "version": "2e4e6a17af35be359cc8f1c924f8f198fbd478cc",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d04800323336eebf441d153f43234eac9b833d36"
            },
            {
              "version": "2e4e6a17af35be359cc8f1c924f8f198fbd478cc",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cfe770220ac2dbd3e104c6b45094037455da81d4"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.16",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.16"
            },
            {
              "version": "5.10.253",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.203",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.167",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.130",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.78",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.19",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "6.19.9",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.19.*"
            },
            {
              "version": "7.0",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}