{
  "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-2026-63926",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-63926",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-07-19T14:55:27.154Z",
    "updatedAt": "2026-10-19T20:17:57.234Z",
    "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": "bpf: sockmap: fix tail fragment offset in bpf_msg_push_data",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: sockmap: fix tail fragment offset in bpf_msg_push_data\n\nWhen bpf_msg_push_data() inserts data in the middle of a scatterlist\nentry, it splits the original entry into a left fragment and a right\nfragment.\n\nThe right fragment offset is page-local, but the code advances it with\n`start`, which is the message-global insertion point. For inserts into a\nnon-first SG entry, this over-advances the offset and leaves the split\nlayout inconsistent.\n\nAdvance the right fragment offset by the fragment-local delta,\n`start - offset`, which matches the length removed from the front of the\noriginal entry.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "6fff607e2f14bd7c63c06c464a6f93b8efbabe28",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f14609d8146707452e0822f3c8154674ce677251"
            },
            {
              "version": "6fff607e2f14bd7c63c06c464a6f93b8efbabe28",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d81b323af2dcee47573907ccb89c0df9b45cb2e2"
            },
            {
              "version": "6fff607e2f14bd7c63c06c464a6f93b8efbabe28",
              "status": "affected",
              "versionType": "git",
              "lessThan": "aeb95146848d12206e1b2cfacd4f40e21ce81d94"
            },
            {
              "version": "6fff607e2f14bd7c63c06c464a6f93b8efbabe28",
              "status": "affected",
              "versionType": "git",
              "lessThan": "96b72672ce849a1402730238e64d9b20bf06a96d"
            },
            {
              "version": "6fff607e2f14bd7c63c06c464a6f93b8efbabe28",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3075c21d2d76c0067f4a382765b43d6cc10470f1"
            },
            {
              "version": "6fff607e2f14bd7c63c06c464a6f93b8efbabe28",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5e19028667963fb371ebb00cecc2a473ef92056b"
            },
            {
              "version": "6fff607e2f14bd7c63c06c464a6f93b8efbabe28",
              "status": "affected",
              "versionType": "git",
              "lessThan": "63f64a510c7917658ddf4d073ece73914ee25346"
            },
            {
              "version": "6fff607e2f14bd7c63c06c464a6f93b8efbabe28",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f72eed9b84fb771019a955908132410a9ba9ea3f"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.20",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.20"
            },
            {
              "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": "6.12.93",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.35",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.0.12",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.0.*"
            },
            {
              "version": "7.1",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}