In Wireshark 2.4.0 to 2.4.3 and 2.2.0 to 2.2.11, the JSON, XML, NTP, XMPP, and GDB dissectors could crash. This was addressed in epan/tvbparse.c by limiting the recursion depth.
www.securityfocus.com/bid/102504
bugs.wireshark.org/bugzilla/show_bug.cgi?id=14253
code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=4f4c95cf46ba6adbd10b09747e10742801bc706b
code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=f6702e49a9720d173246668495eece6d77eca5b0
lists.debian.org/debian-lts-announce/2018/01/msg00032.html
www.debian.org/security/2018/dsa-4101
www.wireshark.org/security/wnpa-sec-2018-01.html