{
  "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-2025-38579",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-38579",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-08-19T17:03:02.308Z",
    "updatedAt": "2026-08-05T12:03:06.641Z",
    "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": "f2fs: fix KMSAN uninit-value in extent_info usage",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix KMSAN uninit-value in extent_info usage\n\nKMSAN reported a use of uninitialized value in `__is_extent_mergeable()`\n and `__is_back_mergeable()` via the read extent tree path.\n\nThe root cause is that `get_read_extent_info()` only initializes three\nfields (`fofs`, `blk`, `len`) of `struct extent_info`, leaving the\nremaining fields uninitialized. This leads to undefined behavior\nwhen those fields are accessed later, especially during\nextent merging.\n\nFix it by zero-initializing the `extent_info` struct before population.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "94afd6d6e5253179c9b891d02081cc8355a11768",
              "status": "affected",
              "versionType": "git",
              "lessThan": "08e8ab00a6d20d5544c932ee85a297d833895141"
            },
            {
              "version": "94afd6d6e5253179c9b891d02081cc8355a11768",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e68b751ec2b15d866967812c57cfdfc1eba6a269"
            },
            {
              "version": "94afd6d6e5253179c9b891d02081cc8355a11768",
              "status": "affected",
              "versionType": "git",
              "lessThan": "dabfa3952c8e6bfe6414dbf32e8b6c5f349dc898"
            },
            {
              "version": "94afd6d6e5253179c9b891d02081cc8355a11768",
              "status": "affected",
              "versionType": "git",
              "lessThan": "44a79437309e0ee2276ac17aaedc71253af253a8"
            },
            {
              "version": "94afd6d6e5253179c9b891d02081cc8355a11768",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cc1615d5aba4f396cf412579928539a2b124c8a0"
            },
            {
              "version": "94afd6d6e5253179c9b891d02081cc8355a11768",
              "status": "affected",
              "versionType": "git",
              "lessThan": "01b6f5955e0008af6bc3a181310d2744bb349800"
            },
            {
              "version": "94afd6d6e5253179c9b891d02081cc8355a11768",
              "status": "affected",
              "versionType": "git",
              "lessThan": "154467f4ad033473e5c903a03e7b9bca7df9a0fa"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.15",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.15"
            },
            {
              "version": "5.15.190",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.148",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.102",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.42",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.15.10",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.15.*"
            },
            {
              "version": "6.16.1",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.16.*"
            },
            {
              "version": "6.17",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}