ImageMagick 7.0.6-1 has a memory leak vulnerability in ReadDCMImage in coders\dcm.c.
https://usn.ubuntu.com/3681-1/
https://github.com/ImageMagick/ImageMagick/issues/551
https://github.com/ImageMagick/ImageMagick/commit/a33f7498f9052b50e8fe8c8422a11ba84474cb42