RHSA-2021:4256 — Security Advisory
Red Hat Security Advisory: graphviz security update
Severity
ModerateRed Hat Product Security
Products
Official CSAF product identity
Published · November 10, 2021
Updated · June 25, 2026
Topic
An update for graphviz 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.
Description
Graphviz is open-source graph-visualization software. Graph visualization is a way of representing structural information as diagrams of abstract graphs and networks. It has important applications in networking, bioinformatics, software engineering, database and web design, machine learning, and in visual interfaces for other technical domains.
Security Fix(es):
- graphviz: off-by-one in parse_reclbl() in lib/common/shapes.c (CVE-2020-18032)
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 8.5 Release Notes linked from the References section.