CVE-2026-72186

CVE CVE-2026-72186EUVD EUVD-2026-58944Published 2026-08-15T05:53:48.000ZLast changed 2026-08-17T05:41:16.000ZCVSS 9.1

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: ntfs: make system files immutable to prevent corruption When a system file such as $Bitmap is exposed via show_sys_files and written from userspace, the volume is corrupted and, because the cluster allocator scans $Bitmap through the same inode's page cache, a write to $Bitmap also deadlocks writeback against the folio it already holds locked. These files are maintained by the driver itself and have no valid reason to be written through the file interface. Mark base metadata files (mft_no < FILE_first_user) as immutable during inode read so the VFS rejects write, mmap, truncate and unlink with -EPERM. Directories are skipped so the root and $Extend remain usable. Internal metadata updates do not go through the VFS write path and are unaffected.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

• Linux — Linux patch: 7.2; 7.1; patch: 7.1.5; af0db57d4293cc9fe6ce99fb5592dc2652228c9d <f72df3a4c33b64de3418ec74d1ad4f028e09d161; patch: 0; af0db57d4293cc9fe6ce99fb5592dc2652228c9d <8f313e92522ac41d273ea137db13ea8a8df2beed

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

• Linux — Linux

Patchlage reports hits and suspected hits. About everything else this system says nothing — neither this page nor the situation report ever claims that an estate is safe.