And I'd like to thank Gentoo developers for the usual very fast response they had towards this security advisory.
The moment I saw the news here, I ran to update my stuff -- the patch was already there, marked stable in the official gentoo repositories.
My impression is that they're following very closely the progression of this event and the relevant GLSA entries are being updated without any noticeable delays.
Thanks for running the show guys, you're true professionals!
Here's the relevant Gentoo Linux Security Advisory (GLSA) link: http://www.gentoo.org/security/en/glsa/glsa-201409-10.xml