RHSA-2023:4432 — 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 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service, and Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions.
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.