{
  "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-2026-53228",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-53228",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-06-25T08:39:27.893Z",
    "updatedAt": "2026-10-19T19:57:30.192Z",
    "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": "ipv6: sit: reload inner IPv6 header after GSO offloads",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: sit: reload inner IPv6 header after GSO offloads\n\nipip6_tunnel_xmit() caches the inner IPv6 header pointer at function\nentry and continues using it after iptunnel_handle_offloads().\n\nFor GSO skbs, iptunnel_handle_offloads() calls skb_header_unclone().\nWhen the skb header is cloned, skb_header_unclone() can call\npskb_expand_head(), which may move the skb head. The pskb_expand_head()\ncontract requires pointers into the skb header to be reloaded after the\ncall.\n\nIf the later skb_realloc_headroom() branch is not taken, SIT uses the\nstale iph6 pointer to read the inner hop limit and DS field. That can\nread from a freed skb head after the old head's remaining clone is\nreleased.\n\nReload iph6 after the offload helper succeeds and before subsequent\nreads from the inner IPv6 header. Keep the existing reload after\nskb_realloc_headroom(), since that branch can also replace the skb.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "14909664e4e192f4c6f6fcdccd9919af7cf783ab",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fddd41445a0537b093e6b3f6232c9933cad1e48b"
            },
            {
              "version": "14909664e4e192f4c6f6fcdccd9919af7cf783ab",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1132e5edc2866c3530be17622153a597095f0e43"
            },
            {
              "version": "14909664e4e192f4c6f6fcdccd9919af7cf783ab",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9c67b44edb3598d234efae6e44649eb993c03da5"
            },
            {
              "version": "14909664e4e192f4c6f6fcdccd9919af7cf783ab",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0bfa7bba1f41aaf5f0604dc712bb4701493e3aa0"
            },
            {
              "version": "14909664e4e192f4c6f6fcdccd9919af7cf783ab",
              "status": "affected",
              "versionType": "git",
              "lessThan": "59f80c919713250fe5d25a4d9aea4e49580fa1d4"
            },
            {
              "version": "14909664e4e192f4c6f6fcdccd9919af7cf783ab",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2fa49b2715e1bad12ce3b0fa64e234d9582c8193"
            },
            {
              "version": "14909664e4e192f4c6f6fcdccd9919af7cf783ab",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cb658c2f5f7977c2a1c77c9f239f4bc8196edb5c"
            },
            {
              "version": "14909664e4e192f4c6f6fcdccd9919af7cf783ab",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f0e42f0c4337b1f220de1ddd63f47197c7dee4de"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.18",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.18"
            },
            {
              "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": "*"
            }
          ]
        }
      ]
    }
  }
}