epan/dissectors/packet-ldss.c in the LDSS dissector in Wireshark 1.12.x before 1.12.13 and 2.x before 2.0.5 mishandles conversations, which allows remote attackers to cause a denial of service (application crash) via a crafted packet. http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-6509