Hi! We don't usually share bulletins about security issues like this here; we expect you to perform routine (and preferably automated!) upgrades of your software at home. But those two issues are critical enough to warrant a special announcement. This week, two major security issues affecting server and desktop users in the Linux community have come up. They are: - a local privilege escalation in snapd: https://lwn.net/Articles/1063453/ - a series of vulnerabilities in AppArmor: https://lwn.net/Articles/1062778/ Both issues are quite serious; they could lead to an attacker getting administrator access on your machine, bypassing normal security controls entirely. If you use Ubuntu, you are most certainly using "snapd" and should upgrade. If you don't, you might still be using it as it's also available for other operating systems. AppArmor is also used a lot on Ubuntu, but is also available for some platforms. Red Hat derivatives like Fedora are less affected by both of those, as they typically use Flatpak (instead of snapd) and SELinux (instead of AppArmor). A. -- Antoine Beaupré torproject.org system administration