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CVE-2023-53163

Estado: AnalizadaMedia (5.5)—

In the Linux kernel, the following vulnerability has been resolved:

fs/ntfs3: don't hold ni_lock when calling truncate_setsize()

syzbot is reporting hung task at do_user_addr_fault() [1], for there is a silent deadlock between PG_locked bit and ni_lock lock.

Since filemap_update_page() calls filemap_read_folio() after calling folio_trylock() which will set PG_locked bit, ntfs_truncate() must not call truncate_setsize() which will wait for PG_locked bit to be cleared when holding ni_lock lock.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: don't hold ni_lock when calling truncate_setsize()\n\nsyzbot is reporting hung task at do_user_addr_fault() [1], for there is\na silent deadlock between PG_locked bit and ni_lock lock.\n\nSince filemap_update_page() calls filemap_read_folio() after calling\nfolio_trylock() which will set PG_locked bit, ntfs_truncate() must not\ncall truncate_setsize() which will wait for PG_locked bit to be cleared\nwhen holding ni_lock lock."
    }
  ],
  "lastModified": "2026-06-17T06:44:25.193",
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