Upstream information
Description
Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In versions 0.9rc2 and below, avahi-daemon can be crashed via a segmentation fault by sending an unsolicited mDNS response containing a recursive CNAME record, where the alias and canonical name point to the same domain (e.g., "h.local" as a CNAME for "h.local"). This causes unbounded recursion in the lookup_handle_cname function, leading to stack exhaustion. The vulnerability affects record browsers where AVAHI_LOOKUP_USE_MULTICAST is set explicitly, which includes record browsers created by resolvers used by nss-mdns. This issue is patched in commit 78eab31128479f06e30beb8c1cbf99dd921e2524.SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having moderate severity.
| CVSS detail | CNA (GitHub) | SUSE |
|---|---|---|
| Base Score | 6.5 | 6.5 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
| Attack Vector | Network | Network |
| Attack Complexity | Low | Low |
| Privileges Required | None | None |
| User Interaction | Required | Required |
| Scope | Unchanged | Unchanged |
| Confidentiality Impact | None | None |
| Integrity Impact | None | None |
| Availability Impact | High | High |
| CVSSv3 Version | 3.1 | 3.1 |
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Please note that this evaluation state might be work in progress, incomplete or outdated.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 | avahi | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP7 | avahi | Affected |
| SUSE Linux Enterprise Micro 5.2 | avahi | Affected |
| SUSE Linux Enterprise Micro 5.3 | avahi | Affected |
| SUSE Linux Enterprise Micro 5.4 | avahi | Affected |
| SUSE Linux Enterprise Micro 5.5 | avahi | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | avahi | Affected |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP7 | avahi | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP5 | avahi | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP6 | avahi | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP7 | avahi | Affected |
| SUSE Linux Enterprise Server 15 SP7 | avahi | Affected |
| SUSE Linux Enterprise Server 16.0 | avahi | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | avahi | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.0 | avahi | Affected |
| SUSE Linux Micro 6.0 | avahi | Affected |
| SUSE Linux Micro 6.1 | avahi | Affected |
| SUSE Linux Micro 6.2 | avahi | Affected |
| openSUSE Leap 15.6 | avahi | Affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 15 SP4 | avahi | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | avahi | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | avahi | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | avahi | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP4 | avahi | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP5 | avahi | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP6 | avahi | Affected |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP4 | avahi | Affected |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP5 | avahi | Affected |
| SUSE Linux Enterprise Server 12 SP5 | avahi | Affected |
| SUSE Linux Enterprise Server 12 SP5 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server 12 SP5-LTSS | avahi | Affected |
| SUSE Linux Enterprise Server 12 SP5-LTSS | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server 12 SP5-LTSS Extended Security | avahi | Affected |
| SUSE Linux Enterprise Server 15 SP4 | avahi | Affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | avahi | Affected |
| SUSE Linux Enterprise Server 15 SP5 | avahi | Affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | avahi | Affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | avahi | Affected |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | avahi | Affected |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | avahi | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | avahi | Affected |
| SUSE Manager Proxy 4.3 | avahi | Affected |
| SUSE Manager Proxy LTS 4.3 | avahi | Affected |
| SUSE Manager Retail Branch Server 4.3 | avahi | Affected |
| SUSE Manager Retail Branch Server LTS 4.3 | avahi | Affected |
| SUSE Manager Server 4.3 | avahi | Affected |
| SUSE Manager Server LTS 4.3 | avahi | Affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| HPE Helion OpenStack 8 | avahi | Affected |
| HPE Helion OpenStack 8 | avahi-glib2 | Affected |
| SUSE CaaS Platform 4.0 | avahi | Affected |
| SUSE CaaS Platform 4.0 | avahi-glib2 | Affected |
| SUSE Enterprise Storage 6 | avahi | Affected |
| SUSE Enterprise Storage 6 | avahi-glib2 | Affected |
| SUSE Enterprise Storage 7 | avahi | Affected |
| SUSE Enterprise Storage 7 | avahi-glib2 | Affected |
| SUSE Enterprise Storage 7.1 | avahi | Affected |
| SUSE Enterprise Storage 7.1 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Desktop 12 SP2 | avahi | Affected |
| SUSE Linux Enterprise Desktop 12 SP2 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Desktop 12 SP3 | avahi | Affected |
| SUSE Linux Enterprise Desktop 12 SP3 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Desktop 12 SP4 | avahi | Affected |
| SUSE Linux Enterprise Desktop 12 SP4 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Desktop 15 SP1 | avahi | Affected |
| SUSE Linux Enterprise Desktop 15 SP1 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Desktop 15 SP2 | avahi | Affected |
| SUSE Linux Enterprise Desktop 15 SP2 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Desktop 15 SP3 | avahi | Affected |
| SUSE Linux Enterprise Desktop 15 SP3 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Desktop 15 SP4 | avahi | Affected |
| SUSE Linux Enterprise Desktop 15 SP5 | avahi | Affected |
| SUSE Linux Enterprise Desktop 15 SP6 | avahi | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1 | avahi | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1 | avahi-glib2 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | avahi | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | avahi-glib2 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | avahi | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | avahi-glib2 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | avahi | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | avahi-glib2 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | avahi | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | avahi-glib2 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | avahi | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | avahi-glib2 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | avahi | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | avahi-glib2 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | avahi | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | avahi-glib2 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | avahi | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | avahi-glib2 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | avahi | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | avahi | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP6 | avahi | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP1 | avahi | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP1 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP2 | avahi | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP2 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP3 | avahi | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP3 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP1 | avahi | Affected |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP1 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP2 | avahi | Affected |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP2 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP3 | avahi | Affected |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP3 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP6 | avahi | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP1 | avahi | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP2 | avahi | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP3 | avahi | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP4 | avahi | Affected |
| SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT | avahi | Affected |
| SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT | avahi-glib2 | Affected |
| SUSE Linux Enterprise Real Time 15 SP2 | avahi | Affected |
| SUSE Linux Enterprise Real Time 15 SP2 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Real Time 15 SP3 | avahi | Affected |
| SUSE Linux Enterprise Real Time 15 SP3 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Real Time 15 SP4 | avahi | Affected |
| SUSE Linux Enterprise Server 12 SP2 | avahi | Affected |
| SUSE Linux Enterprise Server 12 SP2 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server 12 SP2-BCL | avahi | Affected |
| SUSE Linux Enterprise Server 12 SP2-BCL | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server 12 SP2-ESPOS | avahi | Affected |
| SUSE Linux Enterprise Server 12 SP2-ESPOS | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server 12 SP2-LTSS | avahi | Affected |
| SUSE Linux Enterprise Server 12 SP2-LTSS | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server 12 SP3 | avahi | Affected |
| SUSE Linux Enterprise Server 12 SP3 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server 12 SP3-BCL | avahi | Affected |
| SUSE Linux Enterprise Server 12 SP3-BCL | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server 12 SP3-ESPOS | avahi | Affected |
| SUSE Linux Enterprise Server 12 SP3-ESPOS | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server 12 SP3-LTSS | avahi | Affected |
| SUSE Linux Enterprise Server 12 SP3-LTSS | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server 12 SP4 | avahi | Affected |
| SUSE Linux Enterprise Server 12 SP4 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server 12 SP4-ESPOS | avahi | Affected |
| SUSE Linux Enterprise Server 12 SP4-ESPOS | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server 12 SP4-LTSS | avahi | Affected |
| SUSE Linux Enterprise Server 12 SP4-LTSS | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server 15 SP1 | avahi | Affected |
| SUSE Linux Enterprise Server 15 SP1 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server 15 SP1-BCL | avahi | Affected |
| SUSE Linux Enterprise Server 15 SP1-BCL | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server 15 SP1-LTSS | avahi | Affected |
| SUSE Linux Enterprise Server 15 SP1-LTSS | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server 15 SP2 | avahi | Affected |
| SUSE Linux Enterprise Server 15 SP2 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server 15 SP2-BCL | avahi | Affected |
| SUSE Linux Enterprise Server 15 SP2-BCL | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server 15 SP2-LTSS | avahi | Affected |
| SUSE Linux Enterprise Server 15 SP2-LTSS | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server 15 SP3 | avahi | Affected |
| SUSE Linux Enterprise Server 15 SP3 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | avahi | Affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server 15 SP3-LTSS | avahi | Affected |
| SUSE Linux Enterprise Server 15 SP3-LTSS | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server 15 SP6 | avahi | Affected |
| SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 | avahi | Affected |
| SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP2 | avahi | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP2 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | avahi | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | avahi | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | avahi | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | avahi | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | avahi | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | avahi | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | avahi | Affected |
| SUSE Linux Enterprise Software Development Kit 12 SP2 | avahi | Affected |
| SUSE Linux Enterprise Software Development Kit 12 SP2 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Software Development Kit 12 SP3 | avahi | Affected |
| SUSE Linux Enterprise Software Development Kit 12 SP3 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Software Development Kit 12 SP4 | avahi | Affected |
| SUSE Linux Enterprise Software Development Kit 12 SP4 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Software Development Kit 12 SP5 | avahi | Affected |
| SUSE Linux Enterprise Software Development Kit 12 SP5 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Workstation Extension 12 SP2 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Workstation Extension 12 SP3 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Workstation Extension 12 SP4 | avahi-glib2 | Affected |
| SUSE Linux Enterprise Workstation Extension 12 SP5 | avahi-glib2 | Affected |
| SUSE Manager Proxy 4.0 | avahi | Affected |
| SUSE Manager Proxy 4.0 | avahi-glib2 | Affected |
| SUSE Manager Proxy 4.1 | avahi | Affected |
| SUSE Manager Proxy 4.1 | avahi-glib2 | Affected |
| SUSE Manager Proxy 4.2 | avahi | Affected |
| SUSE Manager Proxy 4.2 | avahi-glib2 | Affected |
| SUSE Manager Retail Branch Server 4.0 | avahi | Affected |
| SUSE Manager Retail Branch Server 4.0 | avahi-glib2 | Affected |
| SUSE Manager Retail Branch Server 4.1 | avahi | Affected |
| SUSE Manager Retail Branch Server 4.1 | avahi-glib2 | Affected |
| SUSE Manager Retail Branch Server 4.2 | avahi | Affected |
| SUSE Manager Retail Branch Server 4.2 | avahi-glib2 | Affected |
| SUSE Manager Server 4.0 | avahi | Affected |
| SUSE Manager Server 4.0 | avahi-glib2 | Affected |
| SUSE Manager Server 4.1 | avahi | Affected |
| SUSE Manager Server 4.1 | avahi-glib2 | Affected |
| SUSE Manager Server 4.2 | avahi | Affected |
| SUSE Manager Server 4.2 | avahi-glib2 | Affected |
| SUSE OpenStack Cloud 7 | avahi | Affected |
| SUSE OpenStack Cloud 7 | avahi-glib2 | Affected |
| SUSE OpenStack Cloud 8 | avahi | Affected |
| SUSE OpenStack Cloud 8 | avahi-glib2 | Affected |
| SUSE OpenStack Cloud 9 | avahi | Affected |
| SUSE OpenStack Cloud 9 | avahi-glib2 | Affected |
| SUSE OpenStack Cloud Crowbar 8 | avahi | Affected |
| SUSE OpenStack Cloud Crowbar 8 | avahi-glib2 | Affected |
| SUSE OpenStack Cloud Crowbar 9 | avahi | Affected |
| SUSE OpenStack Cloud Crowbar 9 | avahi-glib2 | Affected |
| openSUSE Leap 15.3 | avahi | Affected |
| openSUSE Leap 15.3 | avahi-glib2 | Affected |
| openSUSE Leap 15.4 | avahi | Affected |
| openSUSE Leap 15.4 | avahi-glib2 | Affected |
| openSUSE Leap 15.5 | avahi | Affected |
| openSUSE Leap Micro 5.2 | avahi | Affected |
| openSUSE Leap Micro 5.3 | avahi | Affected |
| openSUSE Leap Micro 5.4 | avahi | Affected |
| openSUSE Leap Micro 5.5 | avahi | Affected |
| Container Status | ||
| suse/sle-micro-rancher/5.2 suse/sle-micro-rancher/5.3 suse/sle-micro-rancher/5.4 suse/sle-micro/5.5 | avahi | Affected |
SUSE Timeline for this CVE
CVE page created: Sat Jan 24 04:02:25 2026CVE page last modified: Mon Jan 26 14:54:46 2026