{"id":6821,"date":"2026-09-04T18:49:18","date_gmt":"2026-09-04T10:49:18","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-72186"},"modified":"2026-09-04T18:49:18","modified_gmt":"2026-09-04T10:49:18","slug":"cve-2026-72186","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-72186","title":{"rendered":"CVE-2026-72186 [CRITICAL] &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: make system fil"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>ntfs: make system files immutable to prevent corruption<\/p>\n<p>When a system file such as $Bitmap is exposed via show_sys_files and<br \/>\nwritten from userspace, the volume is corrupted and, because the cluster<br \/>\nallocator scans $Bitmap through the same inode&#8217;s page cache, a write to<br \/>\n$Bitmap also deadlocks writeback against the folio it already holds locked.<\/p>\n<p>These files are maintained by the driver itself and have no valid reason<br \/>\nto be written through the file interface. Mark base metadata files<br \/>\n(mft_no &lt; FILE_first_user) as immutable during inode read so the VFS<br \/>\nrejects write, mmap, truncate and unlink with -EPERM. Directories are<br \/>\nskipped so the root and $Extend remain usable. Internal metadata updates<br \/>\ndo not go through the VFS write path and are unaffected.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>ntfs: make system files immutable to prevent corruption<\/p>\n<p>When a system file such as $Bitmap is exposed via show_sys_files and<br \/>\nwritt<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-6821","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/6821","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6821"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6821"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6821"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}