CVE-2023-53163

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> fs/ntfs3: don&amp;#39;t hold ni_lock when calling truncate_setsize()<br /> <br /> syzbot is reporting hung task at do_user_addr_fault() [1], for there is<br /> a silent deadlock between PG_locked bit and ni_lock lock.<br /> <br /> Since filemap_update_page() calls filemap_read_folio() after calling<br /> folio_trylock() which will set PG_locked bit, ntfs_truncate() must not<br /> call truncate_setsize() which will wait for PG_locked bit to be cleared<br /> when holding ni_lock lock.