Upstream information
Description
A flaw was found in iperf3. A remote unauthenticated attacker can exploit a vulnerability in the `JSON_read()` function, which accepts a peer-controlled message length and allocates memory without an upper bound. This allows the attacker to trigger excessive memory consumption, leading to a Denial of Service (DoS) through memory exhaustion, severe slowdown, or termination of the iperf3 service.SUSE information
Overall state of this security issue: Resolved
This issue is currently rated as having moderate severity.
| CVSS detail | CNA (Red Hat) | SUSE |
|---|---|---|
| Base Score | 5.3 | 5.3 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| 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 | Low | Low |
| CVSSv3 Version | 3.1 | 3.1 |
List of released packages
| Product(s) | Fixed package version(s) | References |
|---|---|---|
| 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Please note that this evaluation state might be work in progress, incomplete or outdated.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 | Not affected |
| SUSE Linux Enterprise Server 16.0 | iperf | Not affected |
| SUSE Linux Enterprise Server 16.1 | iperf | Not affected |
| SUSE Linux Enterprise Server for SAP applications 16.0 | iperf | Not affected |
| SUSE Linux Enterprise Server for SAP applications 16.1 | iperf | Not affected |
| SUSE Linux Micro Extras 6.0 | iperf | Not affected |
| SUSE Linux Micro Extras 6.1 | iperf | Not affected |
| SUSE Linux Micro Extras 6.2 | iperf | Not affected |
| openSUSE Leap 16.0 | iperf | Not affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE Enterprise Storage 6 | iperf | Not affected |
| SUSE Enterprise Storage 7 | iperf | Not affected |
| SUSE Enterprise Storage 7.1 | iperf | Not affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP4 | iperf | Not affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP5 | iperf | Not affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP6 | iperf | Not affected |
| openSUSE Leap 15.3 | iperf | Not affected |
| openSUSE Leap 15.4 | iperf | Not affected |
| openSUSE Leap 15.5 | iperf | Not affected |
| openSUSE Leap 15.6 | iperf | Not affected |
| Products at an unknown state of their lifecycle. | ||
| SUSE Linux Enterprise Server for NVIDIA 16.1 | iperf | Not affected |
SUSE Timeline for this CVE
CVE page created: Tue Oct 6 11:57:17 2026CVE page last modified: Wed Oct 7 14:07:50 2026