Comment 5 for bug 123470

not a basic question at all :)
infact, it is advised that you DON'T try as following it may result in failing and/or insanity. (even a broken system if done really badly)

but basically what you want to do is pull the source code from ubuntu and apply the patch against it and then rebuilt it.
more insanity can be found at http://doc.ubuntu.com/ubuntu/packagingguide/C/index.html