static MagickBooleanType WriteMSLImage(const ImageInfo *image_info,Image *image)
{
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  assert(image != (Image *) NULL);
  assert(image->signature == MagickSignature);
  if (image->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  (void) ReferenceImage(image);
  (void) ProcessMSLScript(image_info,&image,&image->exception);
  return(MagickTrue);
}

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.