The libX11 packages contain the core X11 protocol client library. Security Fix: libX11: InitExt.c can overwrite unintended portions of the Display structure if the extension request leads to a buffer overflow 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 9.3 Release Notes linked from the References section.