CVE-2019-3844

It was discovered that a systemd service that uses DynamicUser property can
get new privileges through the execution of SUID binaries, which would
allow to create binaries owned by the service transient group with the
setgid bit set. A local attacker may use this flaw to access resources that
will be owned by a potentially different service in the future, when the
GID will be recycled.

Bugs

• <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=928102&gt;
• <https://bugzilla.redhat.com/show_bug.cgi?id=1684610&gt;
• <https://bugs.chromium.org/p/project-zero/issues/detail?id=1771&gt;
• <https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1814596&gt;