Not sure about Centos, can't find anything. Looks like someone has submitted a patch for Fedora - https://bodhi.fedoraproject.org/updates/FEDORA-2016-0f9e9a34...

I'm guessing Ubuntu will add something here once they get a fixed released - http://www.ubuntu.com/usn/

Should be able to see centos updates here, once they are released, for files glibc-2.12* with a 2016 timestamp -

http://mirror.centos.org/centos/6/updates/x86_64/Packages/

http://mirror.centos.org/centos/7/updates/x86_64/Packages/

centos patch has been released at http://mirror.centos.org/centos/6/updates/ Note: it's likely not propagated to all mirrors yet