Ubuntu 12.04 and 14.04 are vulnerable too, here are the notices:

https://www.ubuntu.com/usn/usn-3150-1/

https://www.ubuntu.com/usn/usn-3149-1/

Thanks! Looking forward to today's server patching...

It has been fixed in Ubuntu and OpenVZ:

https://www.ubuntu.com/usn/usn-3151-1/

https://virtuozzo.com/linux-kernel-security-exploit-fix/

In Virtuozzo at least. They don't mention OpenVZ.

As many people found out with Dirty COW, the latest version of OpenVZ doesn't receive tested patched kernels in response to newly discovered bugs. Their options are to run a nightly kernel build or to pay for Virtuozzo for their 'ReadyKernel' patches:

"Virtuozzo team uploads stable kernels for OpenVZ version 7, tested for our commercial customers, approximately once a quarter. In between, we do not test or release any kernels - all the intermediate updates are delivered to our commercial customers in rebootless (kpatch) format without building full kernel updates. Again, this is a part of our commercial offering.

As for the contributions to the community product, we still build these kernels for the "factory" repository. However, we are not equipped to test them on regular basis, between these quarterly updates."