A vulnerability was recently discovered in the Linux kernel 2.6.32, which allows local users to increase their privileges on servers with InfiniBand technology.
If your server uses InfiniBand and your OS is RedHat/CentOS/CloudLinux 6, Virtuozzo/OpenVZ, and Proxmox 2.x, then you are vulnerable. We recommend that you update the server and run the server with a new kernel to fix the problem.