Null Pointer Dereference at DistortImage of MagickCore/distort.c #780
Description
Hi all,
Another potential NPD at resample_filter=AcquireResampleFilterThreadSet(image of DistortImage, there is no null check after this acquiring, it then dereference the pointer in after. It could lead to process crash in acquiring when there is not enough available memory .
This seems a similar case of #775
status=MagickTrue;
progress=0;
GetPixelInfo(distort_image,&zero);
resample_filter=AcquireResampleFilterThreadSet(image, // AcquireResampleFilterThreadSet is able to return NULL (when acquiring memory hitting oom)
UndefinedVirtualPixelMethod,MagickFalse,exception);
distort_view=AcquireAuthenticCacheView(distort_image,exception);
Regards,
Alex, SourceBrella Inc.