Secunia Security Advisory – FreeBSD has acknowledged a weakness in ZFS, which can be exploited by malicious, local users to disclose potentially sensitive information or potentially gain escalated privileges.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/85252/sa38124.txt
Source: https://packetstormsecurity.com/files/85252/Secunia-Security-Advisory-38124.html