{
  "cveId": "CVE-2024-35993",
  "url": "https://patchblox.com/security/cve/CVE-2024-35993",
  "summary": "CVE-2024-35993 is fixed in linux on 1 platform, first by DEBIAN-CVE-2024-35993, released May 20, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  mm: turn folio_test_hugetlb into a PageType  The...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  mm: turn folio_test_hugetlb into a PageType  The current folio_test_hugetlb() can be fooled by a concurrent folio split into returning true for a folio which has never belonged to hugetlbfs.  This can\u0027t happen if the caller holds a refcount on it, but we have a few places (memory-failure, compaction, procfs) which do not and should not take a speculative reference.  Since hugetlb pages do not use individual page mapcounts (they are always fully mapped and use the entire_mapcount field to record the number of mappings), the PageType field is available now that page_mapcount() ignores the value in this field.  In compaction and with CONFIG_DEBUG_VM enabled, the current implementation can result in an oops, as reported by Luis. This happens since 9c5ccf2db04b (\u0022mm: remove HUGETLB_PAGE_DTOR\u0022) effectively added some VM_BUG_ON() checks in the PageHuge() testing path.  [willy@infradead.org: update vmcoreinfo]",
  "published": "2024-05-20T10:15:13Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00217,
  "epssPercentile": 0.122,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.8.9-1",
      "fix": "DEBIAN-CVE-2024-35993",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2024-35993",
      "released": "2024-05-20T10:15:13Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.8.9-1",
      "fix": "DEBIAN-CVE-2024-35993",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2024-35993",
      "released": "2024-05-20T10:15:13Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}