Locate and add a repository that supports both the kernel module package for CDFS support and the kernel it was built against. This is going to take some homework on your part.
Install the tools needed to download, configure, build, and boot your own kernel, making sure to patch it if CDFS is a separate patchset (which it appears it is). This one is going to take more homework on your part if you've never built a kernel before, but it provides you with a lot of new, useful information and skills in terms of linux guruhood.