{
  "cveId": "CVE-2026-72197",
  "url": "https://patchblox.com/security/cve/CVE-2026-72197",
  "summary": "CVE-2026-72197 is fixed in 56 products on 1 platform, first by DEBIAN-CVE-2026-72197, released August 15, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  fs/ntfs3: bound DeleteIndexEntryAllocation memmo...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  fs/ntfs3: bound DeleteIndexEntryAllocation memmove length  In do_action()\u0027s DeleteIndexEntryAllocation case, e-\u003Esize comes from an on-disk INDEX_BUFFER entry.  When e-\u003Esize makes e \u002B e-\u003Esize point past hdr \u002B hdr-\u003Eused, PtrOffset(e1, Add2Ptr(hdr, used)) returns a negative ptrdiff_t that is silently cast to a quasi-infinite size_t when passed to memmove().  The memmove then walks past the destination buffer.  The sibling DeleteIndexEntryRoot case at fslog.c:3540-3543 already carries the corresponding guard:  \tif (PtrOffset(e1, Add2Ptr(hdr, used)) \u003C esize || \t    Add2Ptr(e, esize) \u003E Add2Ptr(lrh, rec_len) || \t    used \u002B esize \u003E le32_to_cpu(hdr-\u003Etotal)) { \t\tgoto dirty_vol; \t}  Apply the same shape to the allocation-path case.  Also reject esize == 0: memmove(e, e, ...) is a no-op and leaves hdr-\u003Eused unchanged, hiding a malformed entry from the existing check_index_header() walk.  Reproduced under UML\u002BKASAN on mainline 8d90b09e6741 by mounting a crafted NTFS image: the unguarded memmove takes a length of 0xffffffffffffff00 and the kernel oopses in memmove\u002B0x81/0x1a0 on the do_action\u002B0x36a2 frame.  [almaz.alexandrovich@paragon-software.com: clang-formatted the changes]",
  "published": "2026-08-15T06:21:38Z",
  "severity": "high",
  "cvss": 8.4,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00185,
  "epssPercentile": 0.08143,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
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      "fix": "ALAS2023-2026-2058",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2058",
      "released": "2026-08-17T09:00:00Z"
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      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2057",
      "released": "2026-08-17T09:00:00Z"
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    {
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      "fix": "ALAS2023-2026-2057",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2057",
      "released": "2026-08-17T09:00:00Z"
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      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
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    {
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      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    }
  ],
  "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"
  }
}