{
  "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-2026-53212",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-53212",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-06-25T08:39:16.888Z",
    "updatedAt": "2026-10-19T19:57:29.000Z",
    "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_tunnel: fix use-after-free on object destroy",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nft_tunnel: fix use-after-free on object destroy\n\nnft_tunnel_obj_destroy() calls metadata_dst_free() which directly\nkfree()s the metadata_dst, ignoring the dst_entry refcount. Packets\nthat took a reference via dst_hold() in nft_tunnel_obj_eval() and\nare still queued (e.g. in a netem qdisc) are left with a dangling\npointer. When these packets are eventually dequeued, dst_release()\noperates on freed memory.\n\nReplace metadata_dst_free() with dst_release() so the metadata_dst\nis freed only after all references are dropped. The dst subsystem\nalready handles metadata_dst cleanup in dst_destroy() when\nDST_METADATA is set.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "af308b94a2a4a5a27bec9028354c4df444a7c8ba",
              "status": "affected",
              "versionType": "git",
              "lessThan": "349df61526d2e39decc685d246202e3e284cfe05"
            },
            {
              "version": "af308b94a2a4a5a27bec9028354c4df444a7c8ba",
              "status": "affected",
              "versionType": "git",
              "lessThan": "55b79b1ae42372012413ce0413181d26679b17ef"
            },
            {
              "version": "af308b94a2a4a5a27bec9028354c4df444a7c8ba",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5e9ee18b27fde88cb6148202b33916c66693fe82"
            },
            {
              "version": "af308b94a2a4a5a27bec9028354c4df444a7c8ba",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8767fe4079affa74314d7eb3220e700150289842"
            },
            {
              "version": "af308b94a2a4a5a27bec9028354c4df444a7c8ba",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fda6573a46ad24f35348e024905ee5bdf729797e"
            },
            {
              "version": "af308b94a2a4a5a27bec9028354c4df444a7c8ba",
              "status": "affected",
              "versionType": "git",
              "lessThan": "941d7394efda5e054e2d6f3e0dd0f6a9ba19aaa3"
            },
            {
              "version": "af308b94a2a4a5a27bec9028354c4df444a7c8ba",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f9a0e4b61054cde89a2a77845293c726cc07cc43"
            },
            {
              "version": "af308b94a2a4a5a27bec9028354c4df444a7c8ba",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c32b26aaa2f9216520a38b3f4bfeec846eb3eb8a"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.19",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.19"
            },
            {
              "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": "*"
            }
          ]
        }
      ]
    }
  }
}