{
  "cveId": "CVE-2026-89614",
  "url": "https://patchblox.com/security/cve/CVE-2026-89614",
  "summary": "CVE-2026-89614 is fixed in linux on 1 platform by DEBIAN-CVE-2026-89614 (version 7.2.6-1), released September 23, 2026. It is not reported as exploited. Patch Radar priority: Urgent.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  ntfs: bound the free-cluster bitmap scan to the...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  ntfs: bound the free-cluster bitmap scan to the volume  vol-\u003Elcn_empty_bits_per_page is sized from vol-\u003Enr_clusters at mount, but ntfs_cluster_alloc() bounds its scan of that array by the size of $Bitmap. Those are independent on-disk quantities and the mount-time check only rejects a $Bitmap that is too small, so an image whose $Bitmap covers more clusters than the volume has lets the scan index past the array.  A run whose LCN lies in that gap takes the allocator straight there, since the caller passes the file\u0027s own last LCN as its locality hint.  KASAN reports a slab out-of-bounds read when a file on such a volume is extended.  Clamp the scan to what that array covers, mirroring the max_index calculation the mount-time scan already uses, and reject a decoded LCN at or beyond nr_clusters in the mapping pairs decoder.  Conforming volumes are unaffected.",
  "published": "2026-09-11T20:19:46Z",
  "severity": "critical",
  "cvss": 9.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00553,
  "epssPercentile": 0.46433,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.6-1",
      "fix": "DEBIAN-CVE-2026-89614",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-89614",
      "released": "2026-09-23T19:19:02Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}