In Wireshark 2.2.0 to 2.2.1, the Profinet I/O dissector could loop excessively, triggered by network traffic or a capture file. This was addressed in plugins/profinet/packet-pn-rtc-one.c by rejecting input with too many I/O objects.
{
"versions": [
{
"introduced": "0"
},
{
"last_affected": "2.2.0"
},
{
"introduced": "0"
},
{
"last_affected": "2.2.1"
}
]
}