Ubuntu Security Notice 489-2 – USN-489-1 fixed vulnerabilities in the Linux kernel. This update provides the corresponding fixes for the redhat cluster suite kernel sources. A flaw was discovered in the cluster manager. A remote attacker could connect to the DLM port and block further DLM operations.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/57891/USN-489-2.txt
Source: https://packetstormsecurity.com/files/57891/Ubuntu-Security-Notice-489-2.html