Ubuntu 18.04.6 LTSわよー
$ sudo apt update && apt list --upgradable
libssl1.0.0/bionic-updates,bionic-security 1.0.2n-1ubuntu5.9 amd64 [upgradable from: 1.0.2n-1ubuntu5.8]
libssl1.1/bionic-updates,bionic-security 1.1.1-1ubuntu2.1~18.04.17 amd64 [upgradable from: 1.1.1-1ubuntu2.1~18.04.15]
networkd-dispatcher/bionic-updates,bionic-updates,bionic-security,bionic-security 1.7-0ubuntu3.5 all [upgradable from: 1.7-0ubuntu3.4]
openssl/bionic-updates,bionic-security 1.1.1-1ubuntu2.1~18.04.17 amd64 [upgradable from: 1.1.1-1ubuntu2.1~18.04.15]
$ sudo apt dist-upgrade -y
おやlibssl
$ cat /var/run/reboot-required*
*** System restart required ***
libssl1.0.0
libssl1.1
$ sync; sync; sync; sudo reboot
(-人-)