From 9fc56bfc9d34f1c69b18b28e433e494574a86641 Mon Sep 17 00:00:00 2001
From: Timo Kreuzer <timo.kreuzer@reactos.org>
Date: Mon, 8 Aug 2022 09:40:40 +0200
Subject: [PATCH] [WIN32K] Fix missing NULL check in IntCreateDIBitmap

---
 win32ss/gdi/ntgdi/dibobj.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/win32ss/gdi/ntgdi/dibobj.c b/win32ss/gdi/ntgdi/dibobj.c
index b7bf542446a..ec5fa69a469 100644
--- a/win32ss/gdi/ntgdi/dibobj.c
+++ b/win32ss/gdi/ntgdi/dibobj.c
@@ -1578,7 +1578,13 @@ IntCreateDIBitmap(
             Surface = SURFACE_ShareLockSurface(handle);
             ASSERT(Surface);
             Palette = CreateDIBPalette(data, Dc, coloruse);
-            ASSERT(Palette);
+            if (Palette == NULL)
+            {
+                SURFACE_ShareUnlockSurface(Surface);
+                GreDeleteObject(handle);
+                return NULL;
+            }
+
             SURFACE_vSetPalette(Surface, Palette);
 
             PALETTE_ShareUnlockPalette(Palette);