{
  "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-2026-53218",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-53218",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-06-25T08:39:21.069Z",
    "updatedAt": "2026-10-15T01:22:43.516Z",
    "importedAt": "2026-10-24T01:58:20.586Z",
    "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: nft_exthdr: fix register tracking for F_PRESENT flag",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nft_exthdr: fix register tracking for F_PRESENT flag\n\nnft_exthdr_init() passes user-controlled priv->len to\nnft_parse_register_store(), which marks that many bytes in the\nregister bitmap as initialized.  However, when NFT_EXTHDR_F_PRESENT\nis set, the eval paths write only 1 byte (nft_reg_store8) or\n4 bytes (*dest = 0 on TCP/DCCP error path).  When len > 4,\nregisters beyond the first are never written, retaining\nuninitialized stack data from nft_regs.\n\nBail out if userspace requests too much data when F_PRESENT is set.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "c078ca3b0c5bf82c2b31906c446d6e2ad8ea0783",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8738b1b6d0e639ca1fc0f61516afd3557ac4ecc6"
            },
            {
              "version": "c078ca3b0c5bf82c2b31906c446d6e2ad8ea0783",
              "status": "affected",
              "versionType": "git",
              "lessThan": "19748967d59c31d24d21d40b728570788310b237"
            },
            {
              "version": "c078ca3b0c5bf82c2b31906c446d6e2ad8ea0783",
              "status": "affected",
              "versionType": "git",
              "lessThan": "46fc15a044e9938e7ea77786fb37edd2cd74f031"
            },
            {
              "version": "c078ca3b0c5bf82c2b31906c446d6e2ad8ea0783",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cd513e43b4b2bd1de39e2367bc4261c699a8652f"
            },
            {
              "version": "c078ca3b0c5bf82c2b31906c446d6e2ad8ea0783",
              "status": "affected",
              "versionType": "git",
              "lessThan": "67b27434c43b68a97becda98c9f0c8cf6cba2134"
            },
            {
              "version": "c078ca3b0c5bf82c2b31906c446d6e2ad8ea0783",
              "status": "affected",
              "versionType": "git",
              "lessThan": "78069a6d8bc86c9e036eb82c2af4a19cc1871a53"
            },
            {
              "version": "c078ca3b0c5bf82c2b31906c446d6e2ad8ea0783",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f08fb3d42fd3aad0b7a263da3ac3ebaf0845e265"
            },
            {
              "version": "c078ca3b0c5bf82c2b31906c446d6e2ad8ea0783",
              "status": "affected",
              "versionType": "git",
              "lessThan": "772cecf198da732faebb5dcfc46d66a505be8495"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.11",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.11"
            },
            {
              "version": "5.10.259",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.210",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.176",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.143",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.94",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.36",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.0.13",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.0.*"
            },
            {
              "version": "7.1",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}