In Wireshark 2.4.0 to 2.4.13, 2.6.0 to 2.6.7, and 3.0.0, the DCERPC SPOOLSS dissector could crash. This was addressed in epan/dissectors/packet-dcerpc-spoolss.c by adding a boundary check.
https://usn.ubuntu.com/3986-1/
https://lists.debian.org/debian-lts-announce/2020/10/msg00036.html
https://lists.debian.org/debian-lts-announce/2019/05/msg00034.html