Debian: DSA-4393-1: systemd security update
Summary
For the stable distribution (stretch), this problem has been fixed in
version 232-25+deb9u9.
We recommend that you upgrade your systemd packages.
For the detailed security status of systemd please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/source-package/systemd
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org