RHSA-2023:4431 — Security Advisory
Red Hat Security Advisory: iperf3 security update
Severity
ImportantRed Hat Product Security
Products
Official CSAF product identity
Published · August 2, 2023
Updated · November 22, 2025
Topic
An update for iperf3 is now available for Red Hat Enterprise Linux 9.0 Extended Update Support.
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
Iperf is a tool which can measure maximum TCP bandwidth and tune various parameters and UDP characteristics. Iperf reports bandwidth, delay jitter, and data-gram loss.
Security Fix(es):
- iperf3: memory allocation hazard and crash (CVE-2023-38403)
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.