{
  "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-2026-89604",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-89604",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-11T19:45:07.365Z",
    "updatedAt": "2026-10-19T08:49:35.476Z",
    "importedAt": "2026-10-24T01:58:35.090Z",
    "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": "efivarfs: Rate limit statfs() handler",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nefivarfs: Rate limit statfs() handler\n\nRavi reports that statfs() may be called by unprivileged users on the\nefivarfs mount point, which may result in a flood of calls to the\nQueryVariableInfo() runtime service. These calls are disproportionately\ncostly on x86 systems where the variable store is backed by SMM, as each\nSMM entry requires a rendez-vous of all the CPUs.\n\nSo rate limit the calls to QueryVariableInfo() at twice per second, and\nreturn the most recently obtained value for calls that are elided.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "115409cbb6a296d73702a62c54c5b1b11cb88b3d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "97d71ebee48cd1b29091762b3e5cca4f815dd84c"
            },
            {
              "version": "d86ff3333cb1d5f42d8898fb5fdb304e143c0237",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3cd611c9f1dbcc116c8af5112e3c1783c8cde2ae"
            },
            {
              "version": "d86ff3333cb1d5f42d8898fb5fdb304e143c0237",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8953bdd1b9c0e748d5408d3d0b8e7aeee5c9cd41"
            },
            {
              "version": "d86ff3333cb1d5f42d8898fb5fdb304e143c0237",
              "status": "affected",
              "versionType": "git",
              "lessThan": "92895a14329cc9533e2a74a265214f690ba3851a"
            },
            {
              "version": "d86ff3333cb1d5f42d8898fb5fdb304e143c0237",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0dbc2e94b81df5a1264068b6ed3605c654b8afcb"
            },
            {
              "version": "d86ff3333cb1d5f42d8898fb5fdb304e143c0237",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b2326338dc683e8c1067c0cbf7a47986c4190902"
            },
            {
              "version": "6.1.178",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.1.188"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.5",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.5"
            },
            {
              "version": "6.1.188",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.157",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.109",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.50",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}