Upstream information
Description
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.SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having important severity.
| CVSS detail | CNA (Red Hat) | SUSE |
|---|---|---|
| Base Score | 7.5 | 7.5 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Attack Vector | Network | Network |
| Attack Complexity | Low | Low |
| Privileges Required | None | None |
| User Interaction | None | None |
| Scope | Unchanged | Unchanged |
| Confidentiality Impact | None | None |
| Integrity Impact | None | None |
| Availability Impact | High | High |
| CVSSv3 Version | 3.1 | 3.1 |
SUSE Security Advisories:
- RHSA-2026:61257, published Mon Aug 31 15:07:28 UTC 2026
- RHSA-2026:61389, published Wed Sep 2 15:07:51 UTC 2026
- RHSA-2026:61680, published Fri Sep 4 15:07:32 UTC 2026
List of released packages
| Product(s) | Fixed package version(s) | References |
|---|---|---|
| SUSE Liberty Linux 10 |
| Patchnames: RHSA-2026:61680 (x86_64) |
| SUSE Liberty Linux 8 |
| Patchnames: RHSA-2026:61257 (i686,x86_64) |
| SUSE Liberty Linux 9 |
| Patchnames: RHSA-2026:61389 (i686,x86_64) |
| openSUSE Tumbleweed |
| Patchnames: openSUSE-Tumbleweed-2026-12060 |
Status of this issue by product and package
Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.
| Product(s) | Source package | State |
|---|---|---|
| Products under general support and receiving all security fixes. | ||
| SUSE Linux Enterprise Module for Package Hub 15 SP7 | iperf | Affected |
| SUSE Linux Enterprise Server 16.0 | iperf | In progress |
| SUSE Linux Enterprise Server 16.1 | iperf | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.0 | iperf | In progress |
| SUSE Linux Enterprise Server for SAP applications 16.1 | iperf | Affected |
| SUSE Linux Micro Extras 6.0 | iperf | Affected |
| SUSE Linux Micro Extras 6.1 | iperf | In progress |
| SUSE Linux Micro Extras 6.2 | iperf | In progress |
| openSUSE Leap 16.0 | iperf | Affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE Enterprise Storage 6 | iperf | Affected |
| SUSE Enterprise Storage 7 | iperf | Affected |
| SUSE Enterprise Storage 7.1 | iperf | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP4 | iperf | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP5 | iperf | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP6 | iperf | Affected |
| openSUSE Leap 15.3 | iperf | Affected |
| openSUSE Leap 15.4 | iperf | Affected |
| openSUSE Leap 15.5 | iperf | Affected |
| openSUSE Leap 15.6 | iperf | Affected |
| Products at an unknown state of their lifecycle. | ||
| SUSE Linux Enterprise Server 16.2 | iperf | Analysis |
| SUSE Linux Enterprise Server for NVIDIA 16.1 | iperf | Affected |
SUSE Timeline for this CVE
CVE page created: Mon Aug 31 16:49:59 2026CVE page last modified: Fri Oct 9 15:49:55 2026