How would i go about upgrading CentOS-5.11 Kernel from 2.6.18-398 to 2.6.24 (or newer). I'm trying to setup automated Veracrypt Encryted Volume on NAS devices. Currently there are known bugs with Any kernel version older then 2.6.24. Also I can't upgrade to CentOS-6 for this particular environment. 
Upgrading CentOS-5.11 kernel
centos;linux kernel