In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, the IEEE 802.11 dissector could crash. This was addressed in epan/crypt/airpdcap.c by rejecting lengths that are too small.
www.securityfocus.com/bid/103165
bugs.wireshark.org/bugzilla/show_bug.cgi?id=14442
code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=a2901dcf45c9f1b07abfbf2a0b0cd654371d72a4
lists.debian.org/debian-lts-announce/2018/04/msg00018.html
www.debian.org/security/2018/dsa-4217
www.wireshark.org/security/wnpa-sec-2018-05.html