Qt is a software toolkit for developing applications. The qt5-base packages contain base tools for string, xml, and network handling in Qt. Security Fix: * qt: buffer over-read in read_xbm_body in gui/image/qxbmhandler.cpp 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 8.4 Release Notes linked from the References section.