{
  "cveId": "CVE-2026-72186",
  "url": "https://patchblox.com/security/cve/CVE-2026-72186",
  "summary": "CVE-2026-72186 is fixed in linux on 1 platform by DEBIAN-CVE-2026-72186 (version 7.1.5-1), released August 15, 2026. It is not reported as exploited. Patch Radar priority: Urgent.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  ntfs: make system files immutable to prevent cor...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  ntfs: make system files immutable to prevent corruption  When a system file such as $Bitmap is exposed via show_sys_files and written from userspace, the volume is corrupted and, because the cluster allocator scans $Bitmap through the same inode\u0027s page cache, a write to $Bitmap also deadlocks writeback against the folio it already holds locked.  These files are maintained by the driver itself and have no valid reason to be written through the file interface. Mark base metadata files (mft_no \u003C FILE_first_user) as immutable during inode read so the VFS rejects write, mmap, truncate and unlink with -EPERM. Directories are skipped so the root and $Extend remain usable. Internal metadata updates do not go through the VFS write path and are unaffected.",
  "published": "2026-08-15T06:21:36Z",
  "severity": "critical",
  "cvss": 9.1,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
  "epss": 0.00501,
  "epssPercentile": 0.43161,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.1.5-1",
      "fix": "DEBIAN-CVE-2026-72186",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-72186",
      "released": "2026-08-15T22:38:55Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}