Debian Security Advisory DSA 823-1 – David Watson discovered a bug in mount as provided by util-linux and other packages such as loop-aes-utils that allows local users to bypass filesystem access restrictions by re-mounting it read-only.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/40358/dsa-823-1.txt
Source: https://packetstormsecurity.com/files/40358/Debian-Linux-Security-Advisory-823-1.html