An issue was discovered in fig2dev before 3.2.8.. A NULL pointer dereference exists in the function compute_closed_spline() located in trans_spline.c. It allows an attacker to cause Denial of Service. The fixed version of fig2dev is 3.2.8.
https://sourceforge.net/p/mcj/tickets/107/
https://sourceforge.net/p/mcj/fig2dev/ci/f17a3b8a7d54c1bc56ab92512531772a0b3ec991/
https://lists.debian.org/debian-lts-announce/2023/01/msg00044.html
https://lists.debian.org/debian-lts-announce/2021/10/msg00002.html