Upstream information
Description
Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.132.Final and 4.2.10.Final, a remote user can trigger a Denial of Service (DoS) against a Netty HTTP/2 server by sending a flood of `CONTINUATION` frames. The server's lack of a limit on the number of `CONTINUATION` frames, combined with a bypass of existing size-based mitigations using zero-byte frames, allows an user to cause excessive CPU consumption with minimal bandwidth, rendering the server unresponsive. Versions 4.1.132.Final and 4.2.10.Final fix the issue.SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having moderate severity.
| CVSS detail | National Vulnerability Database | SUSE |
|---|---|---|
| Base Score | 7.5 | 5.9 |
| 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:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Attack Vector | Network | Network |
| Attack Complexity | Low | High |
| 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 |
| CVSS detail | CNA (GitHub) | SUSE |
|---|---|---|
| Base Score | 8.7 | 8.2 |
| Vector | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| Attack Vector | Network | Network |
| Attack Complexity | Low | High |
| Attack Requirements | None | None |
| Privileges Required | None | None |
| User Interaction | None | None |
| Vulnerable System Confidentiality Impact | None | None |
| Vulnerable System Integrity Impact | None | None |
| Vulnerable System Availability Impact | High | High |
| Subsequent System Confidentiality Impact | None | None |
| Subsequent System Integrity Impact | None | None |
| Subsequent System Availability Impact | None | None |
| CVSSv4 Version | 4.0 | 4.0 |
List of released packages
| Product(s) | Fixed package version(s) | References |
|---|---|---|
| openSUSE Tumbleweed |
| Patchnames: openSUSE-Tumbleweed-2026-10463 |
List of packages in QA
| Product(s) | Package(s) |
|---|---|
| SUSE Linux Enterprise Module for Development Tools 15 SP7 |
|
| SUSE Linux Enterprise Server 15 SP7 |
|
| SUSE Linux Enterprise Desktop 15 SP7 |
|
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 |
|
| SUSE Linux Enterprise High Performance Computing 15 SP7 |
|
| SUSE Linux Enterprise Module for Package Hub 15 SP7 |
|
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 Desktop 15 SP7 | netty-tcnative | In progress |
| SUSE Linux Enterprise Desktop 15 SP7 | netty3 | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP7 | netty-tcnative | In progress |
| SUSE Linux Enterprise High Performance Computing 15 SP7 | netty3 | Not affected |
| SUSE Linux Enterprise Module for Development Tools 15 SP7 | netty-tcnative | In progress |
| SUSE Linux Enterprise Module for Development Tools 15 SP7 | netty3 | Not affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP7 | netty | In progress |
| SUSE Linux Enterprise Server 15 SP7 | netty-tcnative | In progress |
| SUSE Linux Enterprise Server 15 SP7 | netty3 | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | netty-tcnative | In progress |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | netty3 | Not affected |
| openSUSE Leap 15.6 | netty | Affected |
| openSUSE Leap 15.6 | netty3 | Not affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 15 SP4 | netty3 | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | netty3 | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | netty3 | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | netty3 | Not affected |
| SUSE Linux Enterprise Module for Development Tools 15 SP4 | netty3 | Not affected |
| SUSE Linux Enterprise Module for Development Tools 15 SP5 | netty3 | Not affected |
| SUSE Linux Enterprise Module for Development Tools 15 SP6 | netty3 | Not affected |
| SUSE Linux Enterprise Server 15 SP4 | netty3 | Not affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | netty3 | Not affected |
| SUSE Linux Enterprise Server 15 SP5 | netty3 | Not affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | netty3 | Not affected |
| SUSE Linux Enterprise Server 15 SP6 | netty3 | Not affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | netty3 | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | netty3 | Not affected |
| SUSE Manager Proxy 4.3 | netty3 | Not affected |
| SUSE Manager Retail Branch Server 4.3 | netty3 | Not affected |
| SUSE Manager Server 4.3 | netty3 | Not affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE Enterprise Storage 7 | netty3 | Not affected |
| SUSE Enterprise Storage 7.1 | netty3 | Not affected |
| SUSE Linux Enterprise Desktop 15 SP2 | netty3 | Not affected |
| SUSE Linux Enterprise Desktop 15 SP3 | netty3 | Not affected |
| SUSE Linux Enterprise Desktop 15 SP4 | netty3 | Not affected |
| SUSE Linux Enterprise Desktop 15 SP5 | netty3 | Not affected |
| SUSE Linux Enterprise Desktop 15 SP6 | netty3 | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | netty3 | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | netty3 | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | netty3 | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | netty3 | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | netty3 | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | netty3 | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | netty3 | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | netty3 | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP6 | netty3 | Not affected |
| SUSE Linux Enterprise Module for Development Tools 15 SP2 | netty3 | Not affected |
| SUSE Linux Enterprise Module for Development Tools 15 SP3 | netty3 | Not affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP5 | netty | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP6 | netty | Affected |
| SUSE Linux Enterprise Real Time 15 SP2 | netty3 | Not affected |
| SUSE Linux Enterprise Real Time 15 SP3 | netty3 | Not affected |
| SUSE Linux Enterprise Real Time 15 SP4 | netty3 | Not affected |
| SUSE Linux Enterprise Server 15 SP2 | netty3 | Not affected |
| SUSE Linux Enterprise Server 15 SP2-BCL | netty3 | Not affected |
| SUSE Linux Enterprise Server 15 SP2-LTSS | netty3 | Not affected |
| SUSE Linux Enterprise Server 15 SP3 | netty3 | Not affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | netty3 | Not affected |
| SUSE Linux Enterprise Server 15 SP3-LTSS | netty3 | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | netty3 | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | netty3 | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | netty3 | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | netty3 | Not affected |
| SUSE Manager Proxy 4.1 | netty3 | Not affected |
| SUSE Manager Proxy 4.2 | netty3 | Not affected |
| SUSE Manager Retail Branch Server 4.1 | netty3 | Not affected |
| SUSE Manager Retail Branch Server 4.2 | netty3 | Not affected |
| SUSE Manager Server 4.1 | netty3 | Not affected |
| SUSE Manager Server 4.2 | netty3 | Not affected |
| openSUSE Leap 15.3 | netty | Affected |
| openSUSE Leap 15.3 | netty3 | Not affected |
| openSUSE Leap 15.4 | netty | Affected |
| openSUSE Leap 15.4 | netty3 | Not affected |
| openSUSE Leap 15.5 | netty | Affected |
| openSUSE Leap 15.5 | netty3 | Not affected |
| Container Status | ||
| suse/manager/5.0/x86_64/server suse/multi-linux-manager/5.1/x86_64/server suse/multi-linux-manager/5.2/x86_64/server | netty | Affected |
SUSE Timeline for this CVE
CVE page created: Fri Mar 27 22:00:43 2026CVE page last modified: Tue Mar 31 14:52:08 2026