static MagickBooleanType IsRLE(const unsigned char *magick,const size_t length)
{
  if (length < 2)
    return(MagickFalse);
  if (memcmp(magick,"\122\314",2) == 0)
    return(MagickTrue);
  return(MagickFalse);
}

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.