[reactos] 01/01: [SETUPAPI] Fix wrong buffer size given to CM_Get_Device_ID_List_ExW

[Hervé Poussineau]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=4712deb8a87394e502cc1b...

commit 4712deb8a87394e502cc1bdbed6bf9eaa7ef74ae
Author:     Hervé Poussineau [e-mail]
AuthorDate: Sat Apr 3 00:51:23 2021 +0200
Commit:     Hervé Poussineau [e-mail]
CommitDate: Sat Apr 3 00:52:01 2021 +0200

[SETUPAPI] Fix wrong buffer size given to CM_Get_Device_ID_List_ExW

This buffer overflow was introduced in previous commit.
---
 dll/win32/setupapi/devclass.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dll/win32/setupapi/devclass.c b/dll/win32/setupapi/devclass.c
index b8531b0093d..56398262437 100644
--- a/dll/win32/setupapi/devclass.c
+++ b/dll/win32/setupapi/devclass.c
@@ -142,7 +142,7 @@ SETUP_CreateDevicesList(
     {
         cr = CM_Get_Device_ID_List_ExW(Enumerator,
                                        Buffer,
-                                       BufferLength,
+                                       BufferLength / sizeof(WCHAR),
                                        Enumerator ? CM_GETIDLIST_FILTER_ENUMERATOR : CM_GETIDLIST_FILTER_NONE,
                                        list->hMachine);
         if (cr == CR_BUFFER_SMALL)