In Keepalived through 2.2.4, the D-Bus policy does not sufficiently restrict the message destination, allowing any user to inspect and manipulate any property. This leads to access-control bypass in some situations in which an unrelated D-Bus system service has a settable (writable) property
https://lists.debian.org/debian-lts-announce/2023/04/msg00012.html
https://github.com/acassen/keepalived/pull/2063
https://github.com/acassen/keepalived/commit/7977fec0be89ae6fe87405b3f8da2f0b5e415e3d