{
  "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-2025-38085",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-38085",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-06-28T07:44:26.178Z",
    "updatedAt": "2026-08-05T11:59:23.457Z",
    "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": "mm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race\n\nhuge_pmd_unshare() drops a reference on a page table that may have\npreviously been shared across processes, potentially turning it into a\nnormal page table used in another process in which unrelated VMAs can\nafterwards be installed.\n\nIf this happens in the middle of a concurrent gup_fast(), gup_fast() could\nend up walking the page tables of another process.  While I don't see any\nway in which that immediately leads to kernel memory corruption, it is\nreally weird and unexpected.\n\nFix it with an explicit broadcast IPI through tlb_remove_table_sync_one(),\njust like we do in khugepaged when removing page tables for a THP\ncollapse.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "39dde65c9940c97fcd178a3d2b1c57ed8b7b68aa",
              "status": "affected",
              "versionType": "git",
              "lessThan": "952596b08c74e8fe9e2883d1dc8a8f54a37384ec"
            },
            {
              "version": "39dde65c9940c97fcd178a3d2b1c57ed8b7b68aa",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a3d864c901a300c295692d129159fc3001a56185"
            },
            {
              "version": "39dde65c9940c97fcd178a3d2b1c57ed8b7b68aa",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b7754d3aa7bf9f62218d096c0c8f6c13698fac8b"
            },
            {
              "version": "39dde65c9940c97fcd178a3d2b1c57ed8b7b68aa",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fe684290418ef9ef76630072086ee530b92f02b8"
            },
            {
              "version": "39dde65c9940c97fcd178a3d2b1c57ed8b7b68aa",
              "status": "affected",
              "versionType": "git",
              "lessThan": "034a52b5ef57c9c8225d94e9067f3390bb33922f"
            },
            {
              "version": "39dde65c9940c97fcd178a3d2b1c57ed8b7b68aa",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a6bfeb97941a9187833b526bc6cc4ff5706d0ce9"
            },
            {
              "version": "39dde65c9940c97fcd178a3d2b1c57ed8b7b68aa",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1013af4f585fccc4d3e5c5824d174de2257f7d6d"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.20",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.20"
            },
            {
              "version": "5.10.239",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.186",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.142",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.95",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.35",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.15.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.15.*"
            },
            {
              "version": "6.16",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}