Gentoo Linux Security Advisory GLSA 200704-11 – During an internal audit, Raphael Marichez of the Gentoo Linux Security Team found that Vixie Cron has weak permissions set on Gentoo, allowing for a local user to create hard links to system and users cron files, while a st_nlink check in database.c will generate a superfluous error. Versions less than 4.1-r10 are affected.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/56015/glsa-200704-11.txt
Source: https://packetstormsecurity.com/files/56015/Gentoo-Linux-Security-Advisory-200704-11.html