Ubuntu Security Notice 4269-1 - It was discovered that systemd incorrectly handled certain PIDFile files. A local attacker could possibly use this issue to trick systemd into killing privileged processes. This issue only affected Ubuntu 16.04 LTS. It was discovered that systemd incorrectly handled certain udevadm trigger commands. A local attacker could possibly use this issue to cause systemd to consume resources, leading to a denial of service. Various other issues were also addressed.
801a330186d2d0b57ba060621d63e9763e16344004da69650cf8fc1454009020
Red Hat Security Advisory 2019-2091-01 - The systemd packages contain systemd, a system and service manager for Linux, compatible with the SysV and LSB init scripts. It provides aggressive parallelism capabilities, uses socket and D-Bus activation for starting services, offers on-demand starting of daemons, and keeps track of processes using Linux cgroups. An out-of-bounds read alongside various other issues have been addressed.
cad79e179794f9db3938298ad892ddea455c7416f87b0c3de0c320e1d703beac