CVE-2023-53163
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-15

Last updated on: 2025-11-24

Assigner: kernel.org

Description
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.
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Meta Information
Published
2025-09-15
Last Modified
2025-11-24
Generated
2026-06-16
AI Q&A
2025-09-15
EPSS Evaluated
2026-06-15
NVD
CVE-2023-53163
Affected Vendors & Products
Showing 5 associated CPEs
Vendor Product Version / Range
linux linux_kernel 6.2
linux linux_kernel 6.2
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
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Executive Summary

This vulnerability in the Linux kernel's NTFS3 file system involves a deadlock issue. Specifically, the code held a lock called ni_lock while calling truncate_setsize(), which could cause a silent deadlock due to interaction with the PG_locked bit. The problem arises because truncate_setsize() waits for the PG_locked bit to clear while ni_lock is held, leading to a hung task. The fix was to avoid holding ni_lock when calling truncate_setsize().

Impact Analysis

This vulnerability can cause the Linux kernel to hang or deadlock when handling NTFS file truncation operations, potentially leading to system instability or unresponsiveness during file operations on NTFS file systems.

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