I can't seem to find a link to the patch - I'd like to take a look at the fix. Anyone know where I could find it?
https://gist.github.com/AGWA/4069e45856ed261ac0af
You can see the change from a fixed-length buffer to a std::string.
This is apt's Git repo, but the commit hasn't landed there yet: https://anonscm.debian.org/cgit/apt/apt.git/
For example, you can see the change in cdrom: handling code as mentioned in the security notice.