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CVE-2026-72187 (GCVE-0-2026-72187)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:53 – Updated: 2026-08-17 05:09
VLAI
Title
ntfs: avoid self-deadlock during inode eviction
Summary
In the Linux kernel, the following vulnerability has been resolved: ntfs: avoid self-deadlock during inode eviction An attribute-list update performed while allocating clusters can drop the last reference to the temporary attribute inode. Evicting that inode drops its reference to the base inode and can invoke ntfs_drop_big_inode() for the base inode from within the base inode's own writeback path. If the base inode is unlinked, ntfs_drop_big_inode() calls truncate_setsize(), which waits for the inode's folio writeback to complete. The same writeback worker is responsible for completing that writeback, so it waits for itself indefinitely. Prevent this self-deadlock by grabbing a reference to the base inode at the beginning of ntfs_writepages() and releasing it at the end of the function. This defers eviction until all bios have been submitted, allowing the wait for folio writeback to complete safely.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: b041ca562526b3c4a71b41b80ba5e520eac636ad , < 5a5f877c5df7605e9bae524a25ec0df9b9cb8ea8 (git)
Affected: b041ca562526b3c4a71b41b80ba5e520eac636ad , < 77dc384207d5fa63ba97c3bf3285fe1215a1cbf6 (git)
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Linux Linux Affected: 7.1
Unaffected: 0 , < 7.1 (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: avoid self-deadlock during inode eviction\n\nAn attribute-list update performed while allocating clusters can drop the\nlast reference to the temporary attribute inode. Evicting that inode\ndrops its reference to the base inode and can invoke ntfs_drop_big_inode()\nfor the base inode from within the base inode\u0027s own writeback path.\n\nIf the base inode is unlinked, ntfs_drop_big_inode() calls\ntruncate_setsize(), which waits for the inode\u0027s folio writeback to\ncomplete. The same writeback worker is responsible for completing that\nwriteback, so it waits for itself indefinitely.\n\nPrevent this self-deadlock by grabbing a reference to the base inode at the\nbeginning of ntfs_writepages() and releasing it at the end of the function.\nThis defers eviction until all bios have been submitted, allowing the wait\nfor folio writeback to complete safely."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:09:51.703Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        {
          "url": "https://git.kernel.org/stable/c/77dc384207d5fa63ba97c3bf3285fe1215a1cbf6"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-72187",
    "datePublished": "2026-08-15T05:53:48.866Z",
    "dateReserved": "2026-08-09T03:40:39.911Z",
    "dateUpdated": "2026-08-17T05:09:51.703Z",
    "state": "PUBLISHED"
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-18T15:15:59+00:00",
      "cve": "CVE-2026-72187",
      "id": "CVE-2026-72187",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ntfs: avoid self-deadlock during inode eviction",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72187.json",
      "version": "3"
    }
  }
}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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