Actually, the patch was announced before the details of the bug: I subscribe to the libpng mailing list, and got about a day's notice to ship the patch out befo

Actually, the patch was announced before the details of the bug: I subscribe to the libpng mailing list, and got about a day's notice to ship the patch out before the CVE and associated details were widely publicised. They did a good job of notifying us quickly, before there was chance for the 'bad guys' to jump on my customers.