https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=8065978ff838f393dfbc7e61374df56f1f157847
commit 8065978ff838f393dfbc7e61374df56f1f157847
Author: Christian Franke <christian.fra...@t-online.de>
AuthorDate: Mon Jul 14 14:44:01 2025 +0200
Commit: Corinna Vinschen <cori...@vinschen.de>
CommitDate: Mon Jul 14 15:29:23 2025 +0200
Cygwin: doc: warn about unprivileged access to raw devices
Raw devices of partitions may be accessible from unprivileged
processes, for example if connected via USB.
Signed-off-by: Christian Franke <christian.fra...@t-online.de>
Diff:
---
winsup/doc/specialnames.xml | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/winsup/doc/specialnames.xml b/winsup/doc/specialnames.xml
index a1f9d3f5e806..02375e737ecf 100644
--- a/winsup/doc/specialnames.xml
+++ b/winsup/doc/specialnames.xml
@@ -368,7 +368,15 @@ handle the information. <emphasis
role='bold'>Writing</emphasis> to a raw
mass storage device you should only do if you
<emphasis role='bold'>really</emphasis> know what you're doing and are aware
of the fact that any mistake can destroy important information, for the
-device, and for you. So, please, handle this ability with care.
+device, and for you. So, please, handle this ability with care.</para>
+
+<para><emphasis role='bold'>Important:</emphasis> Windows may allow raw read
+<emphasis role='bold'>and write</emphasis> access to partitions (for example
+<filename>/dev/sda2</filename>) even from unprivileged processes. This is
+usually the case for partitions on "removable" drives like USB flash drives
+or regular SATA/NVMe drives behind USB docking stations. If
+<command>chkdsk X:</command> works, raw access to the same partition is
+possible from the same user account.
<emphasis role='bold'>You have been warned.</emphasis></para></note>
<para>
