An update for libX11 is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of
 Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The libX11 packages contain the core X11 protocol client library.

Security Fix(es):

* libX11: out-of-bounds memory access in _XkbReadKeySyms() (CVE-2023-43785)

* libX11: stack exhaustion from infinite recursion in PutSubImage()
 (CVE-2023-43786)

* libX11: integer overflow in XCreateImage() leading to a heap overflow
 (CVE-2023-43787)

For more details about the security issue(s), including the impact, a CVSS
 score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise
 Linux 8.10 Release Notes linked from the References section.

This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2023-43785: Out-of-bounds Write (CWE-787)
CVE-2023-43786: Uncontrolled Resource Consumption (CWE-400)
CVE-2023-43787: Heap-based Buffer Overflow (CWE-122)