When ImageMagick 7.0.6-1 processes a crafted file in convert, it can lead to a Floating Point Exception (FPE) in the WritePALMImage() function in coders/palm.c, related to an incorrect bits-per-pixel calculation.
https://www.debian.org/security/2017/dsa-4019
https://usn.ubuntu.com/3681-1/
https://lists.debian.org/debian-lts-announce/2019/05/msg00015.html