From 36af38d7dd4870e445374dd55fec53273542614c Mon Sep 17 00:00:00 2001
From: Saveliy Tretiakov <saveliyt@gmail.com>
Date: Sun, 1 Apr 2007 17:27:59 +0000
Subject: [PATCH] Add missing check

svn path=/trunk/; revision=26232
---
 reactos/ntoskrnl/ex/sysinfo.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/reactos/ntoskrnl/ex/sysinfo.c b/reactos/ntoskrnl/ex/sysinfo.c
index 80fbc975779..9459838e704 100644
--- a/reactos/ntoskrnl/ex/sysinfo.c
+++ b/reactos/ntoskrnl/ex/sysinfo.c
@@ -1322,6 +1322,9 @@ SSI_DEF(SystemUnloadGdiDriverInformation)
     if(Size != sizeof(PVOID)) 
         return STATUS_INFO_LENGTH_MISMATCH;
    
+    if(KeGetPreviousMode() != KernelMode) 
+        return STATUS_PRIVILEGE_NOT_HELD;
+    
     // Scan the module list 
     NextEntry = PsLoadedModuleList.Flink;
     while(NextEntry != &PsLoadedModuleList)