The Firefox AppArmor profile shipped in Ubuntu 18.04/bionic includes this rule, so this should no longer be an issue.
** Changed in: firefox (Ubuntu) Status: Confirmed => 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/1553758 Title: usr.bin.firefox apparmor profile blocks access to meminfo To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1553758/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs