Secunia Security Advisory – Ubuntu has issued an update for MadWifi. This fixes some vulnerabilities, which can be exploited by malicious, local users to cause a DoS (Denial of Service) and by malicious people to gain knowledge of potentially sensitive information or to cause a DoS.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/57363/sa25861.txt
Source: https://packetstormsecurity.com/files/57363/Secunia-Security-Advisory-25861.html