Improper Input Validation Affecting iperf3-debuginfo package, versions <0:3.9-17.el9_8.1


Severity

Recommended
0.0
high
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.64% (50th percentile)

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  • Snyk IDSNYK-ROCKY9-IPERF3DEBUGINFO-19496482
  • published2 Sept 2026
  • disclosed11 Aug 2026

Introduced: 11 Aug 2026

CVE-2026-71217  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:9 iperf3-debuginfo to version 0:3.9-17.el9_8.1 or higher.
This issue was patched in RLSA-2026:61389.

NVD Description

Note: Versions mentioned in the description apply only to the upstream iperf3-debuginfo package and not the iperf3-debuginfo package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:9 relevant fixed versions and status.

A flaw was found in iperf3. A remote attacker can exploit this vulnerability by sending crafted control-channel JSON with oversized numeric parameters, such as parallel and len, which are not properly validated by the server. This improper input validation can lead to excessive stream and thread creation, as well as large buffer allocations, causing resource exhaustion. Consequently, this can result in a Denial of Service (DoS) on the affected iperf3 server.

CVSS Base Scores

version 3.1