File ImageMagick-CVE-2019-11007.patch of Package ImageMagick.16892
--- a/coders/png.c
+++ b/coders/png.c
@@ -3790,7 +3790,8 @@ static Image *ReadOnePNGImage(MngInfo *mng_info,
{
png_destroy_read_struct(&ping,&ping_info,&end_info);
pixel_info=RelinquishVirtualMemory(pixel_info);
- image->colors=2;
+ if (AcquireImageColormap(image,2,exception) == MagickFalse)
+ ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
(void) SetImageBackgroundColor(image,exception);
#ifdef IMPNG_SETJMP_NOT_THREAD_SAFE
UnlockSemaphoreInfo(ping_semaphore);