{
  "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-2026-72250",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-72250",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-15T05:54:39.134Z",
    "updatedAt": "2026-10-16T18:55:13.023Z",
    "importedAt": "2026-10-24T01:58:25.636Z",
    "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: nf_conntrack_reasm: guard mac_header adjustment after IPv6 defrag",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_conntrack_reasm: guard mac_header adjustment after IPv6 defrag\n\nnf_ct_frag6_reasm() slides the packet head forward to drop the IPv6\nfragment header and then unconditionally advances skb->mac_header:\n\n\tskb->mac_header += sizeof(struct frag_hdr);\n\nOn the NF_INET_LOCAL_OUT defrag path the skb has no link-layer header\nyet, so skb->mac_header is still the \"not set\" sentinel (u16)~0U. Adding\nsizeof(struct frag_hdr) wraps it to a small value (0xffff + 8 == 7),\nafter which skb_mac_header_was_set() wrongly reports a MAC header is\npresent and skb_mac_header() points into the headroom.\n\nThe reassembler has done this unconditional add since it was introduced;\nit was harmless while mac_header was a bare pointer, but wrong once\nmac_header became a u16 offset whose unset state is the ~0U sentinel\ntested by skb_mac_header_was_set(). The sibling net/ipv6/reassembly.c\ndoes the same relocation and does guard the adjustment; mirror the\nguard here.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "9fb9cbb1082d6b31fb45aa1a14432449a0df6cf1",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6e8cd710ca35c576f5f2e5a396047c9ac61f75e5"
            },
            {
              "version": "9fb9cbb1082d6b31fb45aa1a14432449a0df6cf1",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2a95ec21824a8ad81ad660b12231456fc0ac9830"
            },
            {
              "version": "9fb9cbb1082d6b31fb45aa1a14432449a0df6cf1",
              "status": "affected",
              "versionType": "git",
              "lessThan": "bbcdef2061b170af45702ce6b359c02c12acfc94"
            },
            {
              "version": "9fb9cbb1082d6b31fb45aa1a14432449a0df6cf1",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cd0d7bbc027b4d3329712cdcdeb4e5567ffd0d58"
            },
            {
              "version": "9fb9cbb1082d6b31fb45aa1a14432449a0df6cf1",
              "status": "affected",
              "versionType": "git",
              "lessThan": "53ef70a315420ed31581d38343684b3bf9a3c76d"
            },
            {
              "version": "9fb9cbb1082d6b31fb45aa1a14432449a0df6cf1",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a58230f3a7c4f6c3261786bc1efb72c42e68cd25"
            },
            {
              "version": "9fb9cbb1082d6b31fb45aa1a14432449a0df6cf1",
              "status": "affected",
              "versionType": "git",
              "lessThan": "00bdce2fda7e430d24cfbc96764a1b96deb31f82"
            },
            {
              "version": "9fb9cbb1082d6b31fb45aa1a14432449a0df6cf1",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3b08fed5b7e0d5e3a25d73ef3ba09cd33ade16c9"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.15",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.15"
            },
            {
              "version": "5.10.261",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.212",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.178",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.145",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.97",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.40",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.5",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}