{
  "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-2025-40179",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-40179",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-11-12T21:56:24.882Z",
    "updatedAt": "2026-05-11T21:44:17.422Z",
    "importedAt": "2026-10-24T01:57:34.152Z",
    "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": "ext4: verify orphan file size is not too big",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: verify orphan file size is not too big\n\nIn principle orphan file can be arbitrarily large. However orphan replay\nneeds to traverse it all and we also pin all its buffers in memory. Thus\nfilesystems with absurdly large orphan files can lead to big amounts of\nmemory consumed. Limit orphan file size to a sane value and also use\nkvmalloc() for allocating array of block descriptor structures to avoid\nlarge order allocations for sane but large orphan files.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "02f310fcf47fa9311d6ba2946a8d19e7d7d11f37",
              "status": "affected",
              "versionType": "git",
              "lessThan": "95a21611b14ae0a401720645245a8db16f040995"
            },
            {
              "version": "02f310fcf47fa9311d6ba2946a8d19e7d7d11f37",
              "status": "affected",
              "versionType": "git",
              "lessThan": "566a1d6084563bd07433025aa23bcea4427de107"
            },
            {
              "version": "02f310fcf47fa9311d6ba2946a8d19e7d7d11f37",
              "status": "affected",
              "versionType": "git",
              "lessThan": "304fc34ff6fc8261138fd81f119e024ac3a129e9"
            },
            {
              "version": "02f310fcf47fa9311d6ba2946a8d19e7d7d11f37",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a2d803fab8a6c6a874277cb80156dc114db91921"
            },
            {
              "version": "02f310fcf47fa9311d6ba2946a8d19e7d7d11f37",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2b9da798ff0f4d026c5f0f815047393ebe7d8859"
            },
            {
              "version": "02f310fcf47fa9311d6ba2946a8d19e7d7d11f37",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0a6ce20c156442a4ce2a404747bb0fb05d54eeb3"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.15",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.15"
            },
            {
              "version": "5.15.195",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.157",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.113",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.54",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.17.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "version": "6.18",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}