RHSA-2021:3296 — Security Advisory
Red Hat Security Advisory: libX11 security update
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Severity
ImportantRed Hat Product Security
Products
Official CSAF product identity
Published · August 30, 2021
Updated · June 28, 2026
Topic
An update for libX11 is now available for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having a security impact of Important. 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.
Description
The libX11 packages contain the core X11 protocol client library.
Security Fix(es):
- libX11: missing request length checks (CVE-2021-31535)
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.