Yum is a command-line utility that allows the user to check for updates and automatically download and install updated RPM packages. Yum automatically obtains and downloads dependencies, prompting the user for permission as necessary. The following packages have been upgraded to a later upstream version: dnf , dnf-plugins-core , libcomps , libdnf , librepo , libsolv . Security Fix: * libcomps: use after free when merging two objmrtrees * libsolv: illegal address access in pool_whatprovides in src/pool.h For more details about the security issue, including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page listed in the References section. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.1 Release Notes linked from the References section.