{
  "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-2021-47464",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-47464",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2024-05-22T06:23:24.355Z",
    "updatedAt": "2026-05-11T13:55:13.840Z",
    "importedAt": "2026-10-24T01:56:36.661Z",
    "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": "audit: fix possible null-pointer dereference in audit_filter_rules",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\naudit: fix possible null-pointer dereference in audit_filter_rules\n\nFix  possible null-pointer dereference in audit_filter_rules.\n\naudit_filter_rules() error: we previously assumed 'ctx' could be null",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "bf361231c295d92a28ca283ea713f56e93e55796",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d6f451f1f60c58d73038c7c3177066f8f084e2a2"
            },
            {
              "version": "bf361231c295d92a28ca283ea713f56e93e55796",
              "status": "affected",
              "versionType": "git",
              "lessThan": "16802fa4c33eb1a8efb23f1e93365190e4047d05"
            },
            {
              "version": "bf361231c295d92a28ca283ea713f56e93e55796",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4e9e46a700201b4c85081fd478c99c692a9aaa0d"
            },
            {
              "version": "bf361231c295d92a28ca283ea713f56e93e55796",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6e3ee990c90494561921c756481d0e2125d8b895"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.3",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.3"
            },
            {
              "version": "5.4.156",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.76",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.14.15",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.14.*"
            },
            {
              "version": "5.15",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}