File ImageMagick-CVE-2019-11007.patch of Package ImageMagick.29977

Index: ImageMagick-6.8.8-1/coders/png.c
===================================================================
--- ImageMagick-6.8.8-1.orig/coders/png.c	2019-04-15 16:13:13.392015129 +0200
+++ ImageMagick-6.8.8-1/coders/png.c	2019-04-15 16:13:43.572171305 +0200
@@ -3564,7 +3564,8 @@ static Image *ReadOnePNGImage(MngInfo *m
     {
       png_destroy_read_struct(&ping,&ping_info,&end_info);
       pixel_info=RelinquishVirtualMemory(pixel_info);
-      image->colors=2;
+      if (AcquireImageColormap(image,2) == MagickFalse)
+        ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
       (void) SetImageBackgroundColor(image);
 #ifdef PNG_SETJMP_NOT_THREAD_SAFE
       UnlockSemaphoreInfo(ping_semaphore);