Provide references for CVE-2019-15523.
Where can I find more information about CVE-2019-15523?
References are available at: https://github.com/LINBIT/csync2/pull/13/commits/92742544a56bcbcd9ec99ca15f898b31797e39e2, https://lists.debian.org/debian-lts-announce/2021/01/msg00003.html.