In GIMP 2.8.22, there is a stack-based buffer over-read in xcf_load_stream in app/xcf/xcf.c when there is no '\0' character after the version string.
https://www.debian.org/security/2017/dsa-4077
https://usn.ubuntu.com/3539-1/
https://lists.debian.org/debian-lts-announce/2017/12/msg00023.html