Comment by dschiptsov

So, basically, it is the consequence of "quickly adding an implementation" of an extension of the TLS protocol to otherwise mature, more-or-less solid and "slightly" audited (at least by OpenBSD and FreeBSD teams) code base. OK. It happens.

btw, is OpenBSD affected or they did the job well by not blindly adding an unnecessary stuff (extensions) and bumping the versions without auditing the changes?