# 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.

- Web page: https://patchblox.com/security/fix/linux/opensuse-su-2026-22090-1
- Platform: Linux
- Released: Nov 7, 2026
- Priority: Urgent (Closes CVE-2026-101276, rated Critical)
- CVEs: 5, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://osv.dev/vulnerability/openSUSE-SU-2026:22090-1

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [iperf](https://patchblox.com/security/data/product/linux/iperf.md) | opensuse-leap 16.0 | 3.21-160000.1.1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-101276](https://patchblox.com/security/data/cve/CVE-2026-101276.md) | Urgent | 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 |  |
| [CVE-2026-71217](https://patchblox.com/security/data/cve/CVE-2026-71217.md) | High | Iperf3: iperf3 server accepts unbounded peer-controlled json parameters enabling remote denial of service via resource exhaustion | 7.5 | 0.0064 |  |
| [CVE-2026-102253](https://patchblox.com/security/data/cve/CVE-2026-102253.md) | High | iperf3 < 3.22 UDP Receive Worker Infinite Loop DoS | 7.5 | 0.0043 |  |
| [CVE-2026-71218](https://patchblox.com/security/data/cve/CVE-2026-71218.md) | Routine | Iperf3: unbounded peer-controlled allocation in iperf3 json_read() allows unauthenticated remote memory exhaustion | 5.3 | 0.0038 |  |
| [CVE-2026-101283](https://patchblox.com/security/data/cve/CVE-2026-101283.md) | Routine | 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 |  |

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Data as of 2026-11-10T13:56:55Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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