OPENSUSE-SU-2026:22090-1: iperf security update

OPENSUSE-SU-2026:22090-1, released November 7, 2026, fixes 5 CVEs in iperf (version 3.21-160000.1.1). None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent

CVEs closed

1 rated Critical

Exploited

None reported

Highest CVSS

7.5

Base score, 0 to 10

Highest EPSS

0.0064

50th percentile

Priority of the 5 CVEs

Patch now 0
                                Urgent 1
                                High 2
                                Routine 2

Fixed package versions

Product	Release	Fixed in
iperf	opensuse-leap 16.0	3.21-160000.1.1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Urgent	CVE-2026-101276	iperf3 3.21 (esnet/iperf) contains a remote, unauthenticated heap use-after-free: the server's per-test watchdog server_timer_proc() frees streams without cancelling/joining their worker threads, so a blocked worker dereferences a freed iperf_stream; fixed in 3.22.	n/a	0.0040	None reported
High	CVE-2026-71217	Iperf3: iperf3 server accepts unbounded peer-controlled json parameters enabling remote denial of service via resource exhaustion	7.5	0.0064	None reported
High	CVE-2026-102253	iperf3 < 3.22 UDP Receive Worker Infinite Loop DoS	7.5	0.0043	None reported
Routine	CVE-2026-71218	Iperf3: unbounded peer-controlled allocation in iperf3 json_read() allows unauthenticated remote memory exhaustion	5.3	0.0038	None reported
Routine	CVE-2026-101283	iperf3: iperf3 3.20–3.21 (esnet/iperf) has a pre-auth heap buffer overflow in decrypt_rsa_message(): a 256-byte RSA buffer is...	n/a	0.0038	None reported

Also fixes CVE-2026-101276

SUSE-SU-2026:24234-1
iperf on sles 16.0
SUSE-SU-2026:4678-1
iperf on sles 15.7
DEBIAN-CVE-2026-101276
iperf3 on Debian 14

Vendor advisory

https://osv.dev/vulnerability/openSUSE-SU-2026:22090-1

For tools and AI agents

This page as data: JSON · Markdown

Link to this page

If this page saved you time, a link to it in your ticket, advisory or write-up helps others find it.

HTML

<a href="https://patchblox.com/security/fix/linux/opensuse-su-2026-22090-1">OPENSUSE-SU-2026:22090-1 on Patchblox Patch Radar</a>

Reusing the data? How to credit Patch Radar.

Which servers are still behind?

Patchblox compares the installed package on every Linux machine against the fixed version for its release, including machines reported through Azure Update Manager.

Get a demo

Patch Radar data is free to use with attribution. Terms and how to credit it.

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.