RHSA-2021:4256 — Security Advisory

Red Hat Security Advisory: graphviz security update

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Severity

Moderate

Red Hat Product Security

RHEL 8

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.

Related CVEs

RHSA-2021:4256 — Red Hat Security Advisory: graphviz security update | PulseLinux