Since the changelog for this fix had no mentions to this bug, and as per Marc's comments on https://bugs.launchpad.net/ubuntu/+source/php7.4/+bug/1953244, I am closing this as fixed.
** Changed in: php7.4 (Ubuntu) Status: In Progress => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1948957 Title: CVE-2021-21703: PHP-FPM oob R/W in root process leading to privilege escalation To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/php7.4/+bug/1948957/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs