Secunia Security Advisory – Ubuntu has issued an update for gnupg. This fixes a vulnerability, which potentially can be exploited by malicious people to cause a DoS (Denial of Service).
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/47814/sa20801.txt
Source: https://packetstormsecurity.com/files/47814/Secunia-Security-Advisory-20801.html