If you use snapd then make sure you've updated to the latest available build from the Fedora 28/29/EPEL repositories 2.37.2 which is not affected.

https://bugs.launchpad.net/snapd/+bug/1813365

# Overview
Current versions of Ubuntu Linux are vulnerable to local privilege escalation due to a bug in the snapd API. This local service installs by default on both "Server" and "Desktop" versions of Ubuntu and is likely included in many Ubuntu-like Linux distributions.
Any
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