From 97aea8189d2f131b2e390b3688b231592f03e096 Mon Sep 17 00:00:00 2001
From: Dmitry Chapyshev <dmitry@reactos.org>
Date: Fri, 19 Jun 2009 08:49:01 +0000
Subject: [PATCH] - Add target process reference/dereference in
 ProcessWow64Information case of NtQueryInformationProcess. - Check buffer
 length

svn path=/trunk/; revision=41466
---
 reactos/ntoskrnl/ps/query.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/reactos/ntoskrnl/ps/query.c b/reactos/ntoskrnl/ps/query.c
index 4d82055ae5d..a94cc4680ab 100644
--- a/reactos/ntoskrnl/ps/query.c
+++ b/reactos/ntoskrnl/ps/query.c
@@ -447,6 +447,29 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
 
         /* WOW64: Not implemented */
         case ProcessWow64Information:
+
+            /* Set the return length */
+            Length = sizeof(ULONG_PTR);
+
+            if (ProcessInformationLength != Length)
+            {
+                Status = STATUS_INFO_LENGTH_MISMATCH;
+                break;
+            }
+
+            /* Reference the process */
+            Status = ObReferenceObjectByHandle(ProcessHandle,
+                                               PROCESS_QUERY_INFORMATION,
+                                               PsProcessType,
+                                               PreviousMode,
+                                               (PVOID*)&Process,
+                                               NULL);
+            if (!NT_SUCCESS(Status)) break;
+
+            DPRINT1("Not implemented: ProcessWow64Information\n");
+
+            /* Dereference the process */
+            ObDereferenceObject(Process);
             Status = STATUS_NOT_IMPLEMENTED;
             break;