Changelog for glib2-2.56.1-9.el7_9.x86_64.rpm :

* Mon May 24 2021 Michael Catanzaro - 2.56.1-9- Fix CVE-2021-27219 Resolves: #1960596
* Wed Oct 14 2020 Ray Strode - 2.56.1-8- Backport patch to fix leak in g_signal_connect_object Resolves: 1887862 Related: #1717000