From 9eeef92b346110f3fd8aae5fec1b660699f9e001 Mon Sep 17 00:00:00 2001
From: Aleksandar Andrejevic <aandrejevic@reactos.org>
Date: Fri, 2 May 2014 23:00:10 +0000
Subject: [PATCH] [BASESRV] Don't accept NULL as a valid console handle.

svn path=/branches/ntvdm/; revision=63122
---
 subsystems/win/basesrv/vdm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/subsystems/win/basesrv/vdm.c b/subsystems/win/basesrv/vdm.c
index ba6866c34b4..4f6aad31705 100644
--- a/subsystems/win/basesrv/vdm.c
+++ b/subsystems/win/basesrv/vdm.c
@@ -29,6 +29,9 @@ NTSTATUS NTAPI BaseSrvGetConsoleRecord(HANDLE ConsoleHandle, PVDM_CONSOLE_RECORD
     PLIST_ENTRY i;
     PVDM_CONSOLE_RECORD CurrentRecord = NULL;
 
+    /* NULL is not a valid console handle */
+    if (ConsoleHandle == NULL) return STATUS_INVALID_PARAMETER;
+
     /* Search for a record that has the same console handle */
     for (i = VDMConsoleListHead.Flink; i != &VDMConsoleListHead; i = i->Flink)
     {