{
  "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-2026-63870",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-63870",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-07-19T14:18:39.113Z",
    "updatedAt": "2026-10-19T20:17:53.580Z",
    "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": "ieee802154: 6lowpan: only accept IPv6 packets in lowpan_xmit()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nieee802154: 6lowpan: only accept IPv6 packets in lowpan_xmit()\n\nThe aoe driver (or similar) generates a non-IPv6 packet\n(e.g., ETH_P_AOE) and queues it for transmission via dev_queue_xmit()\non a 6LoWPAN interface (configured by the user or test case).\n\nSince the packet is not IPv6, the 6LoWPAN header_ops->create function\n(lowpan_header_create or header_create) returns early without initializing\nthe lowpan_addr_info structure in the skb headroom.\n\nIn the transmit function (lowpan_xmit), the driver calls lowpan_header\n(or setup_header) which unconditionally copies and uses the lowpan_addr_info\nfrom the headroom, which contains uninitialized data.\n\nFix this by dropping non IPv6 packets.\n\nA similar fix is needed in net/bluetooth/6lowpan.c bt_xmit().",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "4dc315e267fe4a3c863fec21f26aa0a418c3f07a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "af07fffbd53ddc3ec3c2a4ca914f27899fa89bca"
            },
            {
              "version": "4dc315e267fe4a3c863fec21f26aa0a418c3f07a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3150e6d3223dfc356308125cabf9c34169842d2a"
            },
            {
              "version": "4dc315e267fe4a3c863fec21f26aa0a418c3f07a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8da95cb6ad7d656c871e776a9c7b77e894d6d89c"
            },
            {
              "version": "4dc315e267fe4a3c863fec21f26aa0a418c3f07a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1a827b95e62b4cbe851ae7cc9c961cdfa769cca4"
            },
            {
              "version": "4dc315e267fe4a3c863fec21f26aa0a418c3f07a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c1819c8defa235c7beda859bc185b1c429a55ecd"
            },
            {
              "version": "4dc315e267fe4a3c863fec21f26aa0a418c3f07a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "285b0842f2e01c3edf805f1fd64da11d9b7f6b4c"
            },
            {
              "version": "4dc315e267fe4a3c863fec21f26aa0a418c3f07a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "87172cc8dc49aaf54407a31edffb0232f8cb93ab"
            },
            {
              "version": "4dc315e267fe4a3c863fec21f26aa0a418c3f07a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3a5f3f7aff18bcc36a57839cf50cf0cc8de707f3"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.0",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.0"
            },
            {
              "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": "*"
            }
          ]
        }
      ]
    }
  }
}