UPR-Kernel in Ubuntu Privacy Remix (UPR) before 8.04_r1 includes kernel support for mounting RAID arrays, which might allow remote attackers to bypass intended isolation mechanisms by (1) reading from or (2) writing to these arrays.
https://exchange.xforce.ibmcloud.com/vulnerabilities/47082
https://bugs.launchpad.net/bugs/301285
http://www.securityfocus.com/bid/32629
http://www.securityfocus.com/archive/1/498905/100/0/threaded