{
  "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-2021-46923",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-46923",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2024-02-27T09:43:54.159Z",
    "updatedAt": "2026-05-11T13:44:30.800Z",
    "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": "fs/mount_setattr: always cleanup mount_kattr",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/mount_setattr: always cleanup mount_kattr\n\nMake sure that finish_mount_kattr() is called after mount_kattr was\nsuccesfully built in both the success and failure case to prevent\nleaking any references we took when we built it.  We returned early if\npath lookup failed thereby risking to leak an additional reference we\ntook when building mount_kattr when an idmapped mount was requested.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "9caccd41541a6f7d6279928d9f971f6642c361af",
              "status": "affected",
              "versionType": "git",
              "lessThan": "47b5d0a7532d39e42a938f81e3904268145c341d"
            },
            {
              "version": "9caccd41541a6f7d6279928d9f971f6642c361af",
              "status": "affected",
              "versionType": "git",
              "lessThan": "012e332286e2bb9f6ac77d195f17e74b2963d663"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.12",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.12"
            },
            {
              "version": "5.15.13",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "5.16",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}