Fix invalid memory accesses in 1036.pdf.asan.23.17

1 files changed, 12 insertions, 2 deletions

diff --git a/splash/Splash.cc b/splash/Splash.cc
index 24d934ab..1f838afb 100644
--- a/splash/Splash.cc
+++ b/splash/Splash.cc
@@ -16,3 +16,3 @@
 // Copyright (C) 2010-2012 Thomas Freitag <Thomas.Freitag@alfa.de>
-// Copyright (C) 2010 Christian Feuersänger <cfeuersaenger@googlemail.com>
+// Copyright (C) 2010 Christian Feuersänger <cfeuersaenger@googlemail.com>
 // Copyright (C) 2011, 2012 William Bader <williambader@hotmail.com>
@@ -3310,2 +3310,8 @@ void Splash::scaleMaskYuXd(SplashImageMaskSource src, void *srcData,
   int i;
+  
+  destPtr0 = dest->data;
+  if (destPtr0 == NULL) {
+    error(errInternal, -1, "dest->data is NULL in Splash::scaleMaskYuXd");
+    return;
+  }
 
@@ -3325,3 +3331,2 @@ void Splash::scaleMaskYuXd(SplashImageMaskSource src, void *srcData,
 
-  destPtr0 = dest->data;
   for (y = 0; y < srcHeight; ++y) {
@@ -4864,2 +4869,7 @@ void Splash::vertFlipImage(SplashBitmap *img, int width, int height,
   int w;
+  
+  if (unlikely(img->data == NULL)) {
+    error(errInternal, -1, "img->data is NULL in Splash::vertFlipImage");
+    return;
+  }