Upstream information
Description
In FRRouting, bgpd does not correctly close a BGP session when the Send Hold Timer (RFC 9687) expires, i.e. when a neighbor has stopped accepting data from the router for twice the hold time. The connection is closed, but bgpd still considers the session to be up. A BGP neighbor that keeps sending KEEPALIVEs but stops reading from its connection, at a time when the router has a large amount of data to send to it (for example while sending it a full routing table), can trigger this. If the neighbor announced Graceful Restart support, bgpd crashes shortly after the session is closed, taking down all BGP sessions on the router, and the neighbor can repeat this each time bgpd restarts. Otherwise, the session stays stuck in the Established state: the neighbor's routes stay installed and keep being advertised to other peers, and the neighbor cannot reconnect until an operator clears the session manually. The neighbor does not need to be malicious; an overloaded or stuck peer can trigger the same behavior. No special configuration is required: any established BGP neighbor can trigger the issue, and Graceful Restart helper mode, which leads to the crash, is enabled by default.SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having important severity.
| CVSS detail | SUSE |
|---|---|
| Base Score | 7.1 |
| Vector | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:H |
| Attack Vector | Network |
| Attack Complexity | High |
| Privileges Required | Low |
| User Interaction | None |
| Scope | Changed |
| Confidentiality Impact | None |
| Integrity Impact | Low |
| Availability Impact | High |
| CVSSv3 Version | 3.1 |
| CVSS detail | CNA (57a55968-44ac-464c-a794-6ba3baad09c4) | SUSE |
|---|---|---|
| Base Score | 6 | 6 |
| Vector | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:L/SA:L/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:N/R:A/V:X/RE:X/U:X | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:L/SA:L |
| Attack Vector | Network | Network |
| Attack Complexity | Low | Low |
| Attack Requirements | Present | Present |
| Privileges Required | Low | Low |
| User Interaction | None | None |
| Vulnerable System Confidentiality Impact | None | None |
| Vulnerable System Integrity Impact | Low | Low |
| Vulnerable System Availability Impact | High | High |
| Subsequent System Confidentiality Impact | None | None |
| Subsequent System Integrity Impact | Low | Low |
| Subsequent System Availability Impact | Low | Low |
| CVSSv4 Version | 4.0 | 4.0 |
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 Server Applications 15 SP7 | frr | Affected |
| SUSE Linux Enterprise Server 15 SP7 | frr | Affected |
| SUSE Linux Enterprise Server 16.0 | frr | Affected |
| SUSE Linux Enterprise Server 16.1 | frr | Affected |
| SUSE Linux Enterprise Server for NVIDIA 16.1 | frr | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | frr | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.0 | frr | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.1 | frr | Affected |
| openSUSE Leap 16.0 | frr | Affected |
| openSUSE Leap 16.1 | frr | Affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 12 SP5 | quagga | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | frr | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | quagga | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | frr | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | quagga | Not affected |
| SUSE Linux Enterprise Server 12 SP5 | quagga | Not affected |
| SUSE Linux Enterprise Server 12 SP5-LTSS | frr | Not affected |
| SUSE Linux Enterprise Server 12 SP5-LTSS | quagga | Not affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | frr | Not affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | quagga | Not affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | frr | Not affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | quagga | Not affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | frr | Not affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | quagga | Not affected |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | frr | Not affected |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | quagga | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | quagga | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | frr | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | quagga | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | frr | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | quagga | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | frr | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | quagga | Not affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| HPE Helion OpenStack 8 | quagga | Not affected |
| SUSE CaaS Platform 4.0 | quagga | Not affected |
| SUSE Enterprise Storage 6 | quagga | Not affected |
| SUSE Enterprise Storage 7 | quagga | Not affected |
| SUSE Enterprise Storage 7.1 | frr | Not affected |
| SUSE Enterprise Storage 7.1 | quagga | Not affected |
| SUSE Linux Enterprise Desktop 12 SP2 | quagga | Not affected |
| SUSE Linux Enterprise Desktop 12 SP3 | quagga | Not affected |
| SUSE Linux Enterprise Desktop 12 SP4 | quagga | Not affected |
| SUSE Linux Enterprise High Performance Computing 12 SP2 | quagga | Not affected |
| SUSE Linux Enterprise High Performance Computing 12 SP3 | quagga | Not affected |
| SUSE Linux Enterprise High Performance Computing 12 SP4 | quagga | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 | quagga | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1 | quagga | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | quagga | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | quagga | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | quagga | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | quagga | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | quagga | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | frr | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | quagga | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | frr | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | quagga | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | frr | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | quagga | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | frr | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | quagga | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | frr | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | quagga | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | frr | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | quagga | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | frr | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | quagga | Not affected |
| SUSE Linux Enterprise High Performance Computing 15-ESPOS | quagga | Not affected |
| SUSE Linux Enterprise High Performance Computing 15-LTSS | quagga | Not affected |
| SUSE Linux Enterprise Module for Server Applications 15 | quagga | Not affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP1 | quagga | Not affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP2 | quagga | Not affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP3 | frr | Not affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP3 | quagga | Not affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP4 | frr | Not affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP4 | quagga | Not affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP5 | frr | Not affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP5 | quagga | Not affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP6 | frr | Not affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP6 | quagga | Not affected |
| SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT | quagga | Not affected |
| SUSE Linux Enterprise Real Time 15 SP2 | quagga | Not affected |
| SUSE Linux Enterprise Real Time 15 SP3 | frr | Not affected |
| SUSE Linux Enterprise Real Time 15 SP3 | quagga | Not affected |
| SUSE Linux Enterprise Real Time 15 SP4 | frr | Not affected |
| SUSE Linux Enterprise Real Time 15 SP4 | quagga | Not affected |
| SUSE Linux Enterprise Server 12 SP2 | quagga | Not affected |
| SUSE Linux Enterprise Server 12 SP2-BCL | quagga | Not affected |
| SUSE Linux Enterprise Server 12 SP2-ESPOS | quagga | Not affected |
| SUSE Linux Enterprise Server 12 SP2-LTSS | quagga | Not affected |
| SUSE Linux Enterprise Server 12 SP3 | quagga | Not affected |
| SUSE Linux Enterprise Server 12 SP3-BCL | quagga | Not affected |
| SUSE Linux Enterprise Server 12 SP3-ESPOS | quagga | Not affected |
| SUSE Linux Enterprise Server 12 SP3-LTSS | quagga | Not affected |
| SUSE Linux Enterprise Server 12 SP4 | quagga | Not affected |
| SUSE Linux Enterprise Server 12 SP4-ESPOS | quagga | Not affected |
| SUSE Linux Enterprise Server 12 SP4-LTSS | quagga | Not affected |
| SUSE Linux Enterprise Server 15 | quagga | Not affected |
| SUSE Linux Enterprise Server 15 SP1 | quagga | Not affected |
| SUSE Linux Enterprise Server 15 SP1-BCL | quagga | Not affected |
| SUSE Linux Enterprise Server 15 SP1-LTSS | quagga | Not affected |
| SUSE Linux Enterprise Server 15 SP2 | quagga | Not affected |
| SUSE Linux Enterprise Server 15 SP2-BCL | quagga | Not affected |
| SUSE Linux Enterprise Server 15 SP2-LTSS | quagga | Not affected |
| SUSE Linux Enterprise Server 15 SP3 | frr | Not affected |
| SUSE Linux Enterprise Server 15 SP3 | quagga | Not affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | frr | Not affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | quagga | Not affected |
| SUSE Linux Enterprise Server 15 SP3-LTSS | frr | Not affected |
| SUSE Linux Enterprise Server 15 SP3-LTSS | quagga | Not affected |
| SUSE Linux Enterprise Server 15 SP4 | frr | Not affected |
| SUSE Linux Enterprise Server 15 SP4 | quagga | Not affected |
| SUSE Linux Enterprise Server 15 SP5 | frr | Not affected |
| SUSE Linux Enterprise Server 15 SP5 | quagga | Not affected |
| SUSE Linux Enterprise Server 15 SP6 | frr | Not affected |
| SUSE Linux Enterprise Server 15 SP6 | quagga | Not affected |
| SUSE Linux Enterprise Server 15-LTSS | quagga | Not affected |
| SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 | quagga | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP2 | quagga | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | quagga | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | quagga | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 | quagga | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | quagga | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | quagga | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | frr | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | quagga | Not affected |
| SUSE Linux Enterprise Software Development Kit 12 SP2 | quagga | Not affected |
| SUSE Linux Enterprise Software Development Kit 12 SP3 | quagga | Not affected |
| SUSE Linux Enterprise Software Development Kit 12 SP4 | quagga | Not affected |
| SUSE Linux Enterprise Software Development Kit 12 SP5 | quagga | Not affected |
| SUSE Manager Proxy 4.0 | quagga | Not affected |
| SUSE Manager Proxy 4.1 | quagga | Not affected |
| SUSE Manager Proxy 4.2 | frr | Not affected |
| SUSE Manager Proxy 4.2 | quagga | Not affected |
| SUSE Manager Proxy 4.3 | frr | Not affected |
| SUSE Manager Proxy 4.3 | quagga | Not affected |
| SUSE Manager Proxy LTS 4.3 | frr | Not affected |
| SUSE Manager Proxy LTS 4.3 | quagga | Not affected |
| SUSE Manager Retail Branch Server 4.0 | quagga | Not affected |
| SUSE Manager Retail Branch Server 4.1 | quagga | Not affected |
| SUSE Manager Retail Branch Server 4.2 | frr | Not affected |
| SUSE Manager Retail Branch Server 4.2 | quagga | Not affected |
| SUSE Manager Retail Branch Server 4.3 | frr | Not affected |
| SUSE Manager Retail Branch Server 4.3 | quagga | Not affected |
| SUSE Manager Retail Branch Server LTS 4.3 | frr | Not affected |
| SUSE Manager Retail Branch Server LTS 4.3 | quagga | Not affected |
| SUSE Manager Server 4.0 | quagga | Not affected |
| SUSE Manager Server 4.1 | quagga | Not affected |
| SUSE Manager Server 4.2 | frr | Not affected |
| SUSE Manager Server 4.2 | quagga | Not affected |
| SUSE Manager Server 4.3 | frr | Not affected |
| SUSE Manager Server 4.3 | quagga | Not affected |
| SUSE Manager Server LTS 4.3 | frr | Not affected |
| SUSE Manager Server LTS 4.3 | quagga | Not affected |
| SUSE OpenStack Cloud 7 | quagga | Not affected |
| SUSE OpenStack Cloud 8 | quagga | Not affected |
| SUSE OpenStack Cloud 9 | quagga | Not affected |
| SUSE OpenStack Cloud Crowbar 8 | quagga | Not affected |
| SUSE OpenStack Cloud Crowbar 9 | quagga | Not affected |
| openSUSE Leap 15.3 | frr | Not affected |
| openSUSE Leap 15.3 | quagga | Not affected |
| openSUSE Leap 15.4 | frr | Not affected |
| openSUSE Leap 15.4 | quagga | Not affected |
| openSUSE Leap 15.5 | frr | Not affected |
| openSUSE Leap 15.5 | quagga | Not affected |
| openSUSE Leap 15.6 | frr | Not affected |
| openSUSE Leap 15.6 | quagga | Not affected |
SUSE Timeline for this CVE
CVE page created: Fri Nov 13 14:07:17 2026CVE page last modified: Sat Nov 14 16:58:14 2026