source: http://www.securityfocus.com/bid/46796/info

Wireshark is prone to a remote denial-of-service vulnerability caused by a NULL-pointer dereference error.

An attacker can exploit this issue to crash the application, resulting in a denial-of-service condition. 

https://github.com/offensive-security/exploitdb-bin-sploits/raw/master/bin-sploits/35432.pcap