Ubuntu Security Notice 429-1 – Moritz Jodeit discovered that tcpdump had an overflow in the 802.11 packet parser. Remote attackers could send specially crafted packets, crashing tcpdump, possibly leading to a denial of service.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/54943/USN-429-1.txt
Source: https://packetstormsecurity.com/files/54943/Ubuntu-Security-Notice-429-1.html