ImageMagick 7.0.8-43 has a memory leak in coders/dot.c, as demonstrated by PingImage in MagickCore/constitute.c.
https://www.debian.org/security/2020/dsa-4712
https://usn.ubuntu.com/4192-1/
https://github.com/ImageMagick/ImageMagick/issues/1558
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00042.html
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00040.html