In Wireshark 2.2.0 to 2.2.6, the ROS dissector could crash with a NULL pointer dereference. This was addressed in epan/dissectors/asn1/ros/packet-ros-template.c by validating an OID.
https://www.wireshark.org/security/wnpa-sec-2017-31.html
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=13637
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=1216