{
  "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-2026-63800",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-63800",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-07-19T12:02:06.897Z",
    "updatedAt": "2026-10-19T20:07:47.475Z",
    "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": "pNFS: Fix use-after-free in pnfs_update_layout()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\npNFS: Fix use-after-free in pnfs_update_layout()\n\nWhen hitting the NFS_LAYOUT_RETURN branch in pnfs_update_layout(),\nthe code calls pnfs_prepare_to_retry_layoutget(lo). If it succeeds,\npnfs_put_layout_hdr(lo) is called before trace_pnfs_update_layout(),\nwhich still references 'lo'. This results in a use-after-free when the\ntracepoint accesses lo's fields.\n\nFix this by moving the tracepoint call before pnfs_put_layout_hdr(lo).",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "06f58dbc49a23c99e5c0f246879ed16667f7bf8f",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4ad8b9a85dbf57ca532ee9e65ad7e6498bfbbf98"
            },
            {
              "version": "2c8d5fc37fe2384a9bdb6965443ab9224d46f704",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1f24b8302c77dcaf79c64c073877a3b9f4dd25d2"
            },
            {
              "version": "2c8d5fc37fe2384a9bdb6965443ab9224d46f704",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9c0fb5c09ae5bd68dc0038692af8127029cb0385"
            },
            {
              "version": "2c8d5fc37fe2384a9bdb6965443ab9224d46f704",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7e37e9b3e82ade881e1798e2f4fcc54aff7793c1"
            },
            {
              "version": "2c8d5fc37fe2384a9bdb6965443ab9224d46f704",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2883ddd7542b4437a2ab4908fe2773f690e20889"
            },
            {
              "version": "2c8d5fc37fe2384a9bdb6965443ab9224d46f704",
              "status": "affected",
              "versionType": "git",
              "lessThan": "200e7637f4d6a1342987045eea72641524f909dc"
            },
            {
              "version": "2c8d5fc37fe2384a9bdb6965443ab9224d46f704",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9645aaf689aff57427ece3b9fa47d5b5399417f4"
            },
            {
              "version": "2c8d5fc37fe2384a9bdb6965443ab9224d46f704",
              "status": "affected",
              "versionType": "git",
              "lessThan": "13e198a90ca4050f4bee8a3f23680389a6563ccc"
            },
            {
              "version": "aa2399f55eff4ec78330bb6fe55f9df53e5cae0c",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5.10.9",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.10.260"
            },
            {
              "version": "5.4.91",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.5"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.11",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.11"
            },
            {
              "version": "5.10.260",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.211",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.177",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.144",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.95",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.38",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.3",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}