$ rpm -qf /etc/shells
setup-2.8.71-10.el7.noarch

$ rpm -q --changelog setup-2.8.71-10.el7.noarch
* 木 6月 21 2018 Ondrej Vasik <[email protected]> - 2.8.71-10
- fix crudp name in /etc/protocols (#1566469)
- do not list /sbin/nologin and /usr/sbin/nologin in /etc/shells
(#1571104)

https://access.redhat.com/errata/RHSA-2018:3249