Secunia Security Advisory – Slackware has issued an update for m4. This fixes a security issue and a vulnerability, which can be exploited by malicious people to manipulate certain data or to potentially compromise a user’s system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/65319/sa29729.txt
Source: https://packetstormsecurity.com/files/65319/Secunia-Security-Advisory-29729.html