Comment # 1 on bug 956712 from Thomas Blume

(In reply to Alexander Bergmann from comment #0)
> Only Factory is affected:
> 
> rh#1284642
> 
> A stack-based buffer overflow vulnerability was found in
> getpwnam()/getgrnam() functions of NSS module nss-mymachines provided by
> systemd.
> 

This report is invalid for Leap since it runs systemd v210, which doesn't
contain this module.
The nss-mymachines module was added in systemd v216:

-->--
CHANGES WITH 216:
[...]

        * A new NSS module nss-mymachines has been added, that
          automatically resolves the names of all local registered
          containers to their respective IP addresses.
--<--

So, it is valid for tumbleweed/factory.