This question already has an answer here:
I'm continually getting this error:
/lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.14' not found
What I did before was add the Debian experimental repo and update to 2.17. But through a long chain of events, this ended up breaking almost everything on my system, and I had to reinstall. Is there any way to upgrade just this single package, without screwing up apt?