In Wireshark 2.6.0 to 2.6.4 and 2.4.0 to 2.4.10, the PVFS dissector could crash. This was addressed in epan/dissectors/packet-pvfs2.c by preventing a NULL pointer dereference.
lists.opensuse.org/opensuse-security-announce/2020-03/msg00027.html
www.securityfocus.com/bid/106051
bugs.wireshark.org/bugzilla/show_bug.cgi?id=15280
code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=3e319db1107b08fc3be804b6d449143ec9aa0dec
lists.debian.org/debian-lts-announce/2019/01/msg00010.html
www.debian.org/security/2018/dsa-4359
www.oracle.com/security-alerts/cpuapr2020.html
www.wireshark.org/security/wnpa-sec-2018-56.html