Secunia Security Advisory – Gentoo has issued an update for flex. This fixes a vulnerability, which potentially can be exploited by malicious people to compromise a user’s system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/44603/sa19228.txt
Source: https://packetstormsecurity.com/files/44603/Secunia-Security-Advisory-19228.html