Extra Chroot protection in SUSE kernels?

Does anyone know if there is any extra chroot protection in the SuSE kernels? Apparently crafty people can "break out" of chroot jail's but there are 3rd party patches that make this much harder to do, patches like Grsecurity, maybe Openwall(?) and Linux Vserver (linux-vserver.org), etc. I don't have a problem taking a vanilla kernel and patching it... but then I'd miss out on things like Oracle Certification, etc. So yes.... does anyone know offhand if the SLES kernels have had their chroot security increased? Alas I'm not a kernel hacker or I'd go take a peek at the source myself! :) Cheers Mike