This bug was fixed in the package gnome-desktop3 - 3.28.2-0ubuntu1.1
---
gnome-desktop3 (3.28.2-0ubuntu1.1) bionic-security; urgency=medium
* Enable bubblewrap hardening for thumnbailers (LP: #1795668)
-- Jeremy Bicha Tue, 02 Oct 2018 10:26:01 -0400
** Changed in:
This bug was fixed in the package bubblewrap - 0.2.1-1ubuntu0.1
---
bubblewrap (0.2.1-1ubuntu0.1) bionic-security; urgency=medium
[ Iain Lane ]
* Don't install setuid on Ubuntu & derivatives since Ubuntu's
kernel enables unprivileged user namespaces (LP: #1795668, LP:
** Description changed:
Impact
==
gnome-desktop 3.26 hardened the thumbnailers with bubblewrap to mitigate
several vulnerabilities. Ubuntu had to disable that feature until bubblewrap
could be promoted to main.
bubblewrap is now in main for 18.10 and the feature is now enabled
