CVE 2012-0067
wiretap/iptrace.c in Wireshark 1.4.x before 1.4.11 and 1.6.x before 1.6.5 allows remote attackers to cause a denial of service (application crash) via a long packet in an AIX iptrace file.
See the 
CVE page on Mitre.org
for more details.
