Upstream information

CVE-2025-62408 at MITRE

Description

c-ares is an asynchronous resolver library. Versions 1.32.3 through 1.34.5 terminate a query after maximum attempts when using read_answer() and process_answer(), which can cause a Denial of Service. This issue is fixed in version 1.34.6.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having moderate severity.

CVSS v3 Scores
CVSS detail CNA (GitHub) SUSE
Base Score 5.9 5.9
Vector CVSS:3.1/AV:N/AC:H/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 High 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
SUSE Bugzilla entry: 1254738 [RESOLVED / FIXED]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
Container bci/node:24-micro
Container bci/nodejs:latest
Image SLES-Azure-3P
Image SLES-Azure-Basic
Image SLES-Azure-Standard
Image SLES-BYOS-Azure
Image SLES-BYOS-EC2
Image SLES-BYOS-GCE
Image SLES-CHOST-BYOS-Aliyun
Image SLES-CHOST-BYOS-Azure
Image SLES-CHOST-BYOS-EC2
Image SLES-CHOST-BYOS-GCE
Image SLES-CHOST-BYOS-GDC
Image SLES-CHOST-BYOS-SAP-CCloud
Image SLES-EC2
Image SLES-EC2-ECS
Image SLES-GCE
Image SLES-GCE-3P
Image SLES-Hardened-BYOS-Azure
Image SLES-Hardened-BYOS-EC2
Image SLES-Hardened-BYOS-GCE
Image SLES-SAP-Azure
Image SLES-SAP-Azure-3P
Image SLES-SAP-BYOS-Azure
Image SLES-SAP-BYOS-EC2
Image SLES-SAP-BYOS-GCE
Image SLES-SAP-EC2
Image SLES-SAP-GCE
Image SLES-SAP-GCE-3P
Image SLES-SAPCAL-Azure
Image SLES-SAPCAL-EC2
Image SLES-SAPCAL-GCE
  • libcares2 >= 1.34.6-160000.1.1
Image SLE-Micro
Image SLE-Micro-Azure
Image SLE-Micro-BYOS
Image SLE-Micro-BYOS-Azure
Image SLE-Micro-BYOS-EC2
Image SLE-Micro-BYOS-GCE
Image SLE-Micro-EC2
Image SLE-Micro-GCE
  • containerd >= 1.7.29-2.1
Image SLES15-SP6-SAP
Image SLES15-SP6-SAP-Azure
Image SLES15-SP6-SAP-EC2
Image SLES15-SP6-SAP-GCE
Image SLES15-SP6-SAPCAL
Image SLES15-SP6-SAPCAL-Azure
Image SLES15-SP6-SAPCAL-EC2
Image SLES15-SP6-SAPCAL-GCE
Image SLES15-SP7-SAPCAL-Azure
Image SLES15-SP7-SAPCAL-EC2
  • libcares2 >= 1.34.8-150000.3.29.1
SUSE Linux Enterprise Desktop 15 SP7
SUSE Linux Enterprise Module for Basesystem 15 SP7
SUSE Linux Enterprise Server 15 SP7
SUSE Linux Enterprise Server for SAP Applications 15 SP7
  • c-ares-devel >= 1.34.8-150000.3.29.1
  • libcares2 >= 1.34.8-150000.3.29.1
 Patchnames:
SUSE-SLE-Module-Basesystem-15-SP7-2026-4021 (aarch64,ppc64le,s390x,x86_64)
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS
  • c-ares-devel >= 1.34.8-150000.3.29.1
  • libcares2 >= 1.34.8-150000.3.29.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-4021 (aarch64,x86_64)
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS
  • c-ares-devel >= 1.34.8-150000.3.29.1
  • libcares2 >= 1.34.8-150000.3.29.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-4021 (aarch64,x86_64)
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS
  • c-ares-devel >= 1.34.8-150000.3.29.1
  • libcares2 >= 1.34.8-150000.3.29.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-4021 (aarch64,x86_64)
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS
  • c-ares-devel >= 1.34.8-150000.3.29.1
  • libcares2 >= 1.34.8-150000.3.29.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-4021 (aarch64,x86_64)
SUSE Linux Enterprise Micro 5.3
  • libcares2 >= 1.34.8-150000.3.29.1
 Patchnames:
SUSE-SLE-Micro-5.3-2026-4021 (aarch64,s390x,x86_64)
SUSE Linux Enterprise Micro 5.4
  • libcares2 >= 1.34.8-150000.3.29.1
 Patchnames:
SUSE-SLE-Micro-5.4-2026-4021 (aarch64,s390x,x86_64)
SUSE Linux Enterprise Micro 5.5
  • libcares2 >= 1.34.8-150000.3.29.1
 Patchnames:
SUSE-SLE-Micro-5.5-2026-4021 (aarch64,ppc64le,s390x,x86_64)
SUSE Linux Enterprise Server 15 SP4-LTSS
  • c-ares-devel >= 1.34.8-150000.3.29.1
  • libcares2 >= 1.34.8-150000.3.29.1
 Patchnames:
SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-4021 (aarch64,ppc64le,s390x,x86_64)
SUSE Linux Enterprise Server 15 SP5-LTSS
  • c-ares-devel >= 1.34.8-150000.3.29.1
  • libcares2 >= 1.34.8-150000.3.29.1
 Patchnames:
SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-4021 (aarch64,ppc64le,s390x,x86_64)
SUSE Linux Enterprise Server 15 SP6-LTSS
  • c-ares-devel >= 1.34.8-150000.3.29.1
  • libcares2 >= 1.34.8-150000.3.29.1
 Patchnames:
SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-4021 (aarch64,ppc64le,s390x,x86_64)
SUSE Linux Enterprise Server 16.0
SUSE Linux Enterprise Server for SAP applications 16.0
  • c-ares-devel >= 1.34.6-160000.1.1
  • c-ares-utils >= 1.34.6-160000.1.1
  • libcares2 >= 1.34.6-160000.1.1
 Patchnames:
SUSE-SLES-16.0-717 (aarch64,ppc64le,s390x,x86_64)
SUSE Linux Enterprise Server 16.1
  • c-ares-devel >= 1.34.6-160099.1.4
  • c-ares-utils >= 1.34.6-160099.1.4
  • libcares2 >= 1.34.6-160099.1.4
 Patchnames:
SUSE Linux Enterprise Server 16.1 GA c-ares-devel-1.34.6-160099.1.4 (aarch64,ppc64le,s390x,x86_64)
SUSE Linux Enterprise Server for SAP Applications 15 SP4
  • c-ares-devel >= 1.34.8-150000.3.29.1
  • libcares2 >= 1.34.8-150000.3.29.1
 Patchnames:
SUSE-SLE-Product-SLES_SAP-15-SP4-2026-4021 (ppc64le,x86_64)
SUSE Linux Enterprise Server for SAP Applications 15 SP5
  • c-ares-devel >= 1.34.8-150000.3.29.1
  • libcares2 >= 1.34.8-150000.3.29.1
 Patchnames:
SUSE-SLE-Product-SLES_SAP-15-SP5-2026-4021 (ppc64le,x86_64)
SUSE Linux Enterprise Server for SAP Applications 15 SP6
  • c-ares-devel >= 1.34.8-150000.3.29.1
  • libcares2 >= 1.34.8-150000.3.29.1
 Patchnames:
SUSE-SLE-Product-SLES_SAP-15-SP6-2026-4021 (ppc64le,x86_64)
SUSE Linux Micro 6.0
  • libcares2 >= 1.34.8-1.1
 Patchnames:
SUSE-SLE-Micro-6.0-870 (aarch64,s390x,x86_64)
SUSE Linux Micro 6.1
  • libcares2 >= 1.34.8-slfo.1.1_1.1
 Patchnames:
SUSE-SLE-Micro-6.1-696 (aarch64,ppc64le,s390x,x86_64)
SUSE Linux Micro 6.2
  • libcares2 >= 1.34.6-160000.1.1
 Patchnames:
SUSE-SL-Micro-6.2-717 (aarch64,ppc64le,s390x,x86_64)
SUSE Manager Proxy LTS 4.3
  • c-ares-devel >= 1.34.8-150000.3.29.1
  • libcares2 >= 1.34.8-150000.3.29.1
 Patchnames:
SUSE-SLE-Product-SUSE-Manager-Proxy-4.3-LTS-2026-4021 (x86_64)
SUSE Manager Retail Branch Server LTS 4.3
  • c-ares-devel >= 1.34.8-150000.3.29.1
  • libcares2 >= 1.34.8-150000.3.29.1
 Patchnames:
SUSE-SLE-Product-SUSE-Manager-Retail-Branch-Server-4.3-LTS-2026-4021 (x86_64)
SUSE Manager Server LTS 4.3
  • c-ares-devel >= 1.34.8-150000.3.29.1
  • libcares2 >= 1.34.8-150000.3.29.1
 Patchnames:
SUSE-SLE-Product-SUSE-Manager-Server-4.3-LTS-2026-4021 (ppc64le,s390x,x86_64)
openSUSE Leap 16.0
  • c-ares-devel >= 1.34.6-160000.1.1
  • c-ares-utils >= 1.34.6-160000.1.1
  • libcares2 >= 1.34.6-160000.1.1
 Patchnames:
openSUSE-Leap-16.0-717
openSUSE Tumbleweed
  • c-ares-devel >= 1.34.6-1.1
  • c-ares-utils >= 1.34.6-1.1
  • istioctl >= 1.28.2-1.1
  • istioctl-bash-completion >= 1.28.2-1.1
  • istioctl-zsh-completion >= 1.28.2-1.1
  • libcares2 >= 1.34.6-1.1
  • libcares2-32bit >= 1.34.6-1.1
 Patchnames:
openSUSE-Tumbleweed-2026-10007
openSUSE-Tumbleweed-2026-10029

First public cloud image revisions this CVE is fixed in:

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 c-ares Released
SUSE Linux Enterprise Micro 5.3 c-ares Released
SUSE Linux Enterprise Micro 5.4 c-ares Released
SUSE Linux Enterprise Micro 5.5 c-ares Released
SUSE Linux Enterprise Micro for Rancher 5.3 c-ares Released
SUSE Linux Enterprise Micro for Rancher 5.4 c-ares Released
SUSE Linux Enterprise Module for Basesystem 15 SP7 c-ares Released
SUSE Linux Enterprise Server 15 SP7 c-ares Released
SUSE Linux Enterprise Server 16.0 c-ares Released
SUSE Linux Enterprise Server 16.1 c-ares Released
SUSE Linux Enterprise Server for SAP Applications 15 SP7 c-ares Released
SUSE Linux Enterprise Server for SAP applications 16.0 c-ares Released
SUSE Linux Enterprise Server for SAP applications 16.1 c-ares Released
SUSE Linux Micro 6.0 c-ares Released
SUSE Linux Micro 6.1 c-ares Released
SUSE Linux Micro 6.2 c-ares Released
openSUSE Leap 16.0 c-ares Released
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS c-ares Released
SUSE Linux Enterprise High Performance Computing 15 SP5 c-ares Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS c-ares Released
SUSE Linux Enterprise Module for Basesystem 15 SP4 c-ares Affected
SUSE Linux Enterprise Module for Basesystem 15 SP5 c-ares Affected
SUSE Linux Enterprise Module for Basesystem 15 SP6 c-ares Not affected
SUSE Linux Enterprise Server 15 SP4 c-ares Affected
SUSE Linux Enterprise Server 15 SP4-LTSS c-ares Released
SUSE Linux Enterprise Server 15 SP5 c-ares Affected
SUSE Linux Enterprise Server 15 SP5-LTSS c-ares Released
SUSE Linux Enterprise Server 15 SP6 c-ares Not affected
SUSE Linux Enterprise Server 15 SP6-LTSS c-ares Released
SUSE Linux Enterprise Server for SAP Applications 15 SP4 c-ares Released
SUSE Linux Enterprise Server for SAP Applications 15 SP5 c-ares Released
SUSE Linux Enterprise Server for SAP Applications 15 SP6 c-ares Released
Products past their end of life and not receiving proactive updates anymore.
SUSE CaaS Platform 4.0 c-ares Affected
SUSE Enterprise Storage 6 c-ares Affected
SUSE Enterprise Storage 7 c-ares Affected
SUSE Enterprise Storage 7.1 c-ares Affected
SUSE Linux Enterprise Desktop 15 c-ares Affected
SUSE Linux Enterprise Desktop 15 SP1 c-ares Affected
SUSE Linux Enterprise Desktop 15 SP2 c-ares Affected
SUSE Linux Enterprise Desktop 15 SP4 c-ares Affected
SUSE Linux Enterprise Desktop 15 SP5 c-ares Affected
SUSE Linux Enterprise Desktop 15 SP6 c-ares Not affected
SUSE Linux Enterprise High Performance Computing 15 c-ares Affected
SUSE Linux Enterprise High Performance Computing 15 SP1 c-ares Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS c-ares Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS c-ares Affected
SUSE Linux Enterprise High Performance Computing 15 SP2 c-ares Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS c-ares Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS c-ares Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS c-ares Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS c-ares Not affected
SUSE Linux Enterprise High Performance Computing 15 SP4 c-ares Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS c-ares Released
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS c-ares Released
SUSE Linux Enterprise High Performance Computing 15-ESPOS c-ares Affected
SUSE Linux Enterprise High Performance Computing 15-LTSS c-ares Affected
SUSE Linux Enterprise Micro 5.1 c-ares Affected
SUSE Linux Enterprise Micro 5.2 c-ares Not affected
SUSE Linux Enterprise Module for Basesystem 15 c-ares Affected
SUSE Linux Enterprise Module for Basesystem 15 SP1 c-ares Affected
SUSE Linux Enterprise Module for Basesystem 15 SP2 c-ares Affected
SUSE Linux Enterprise Real Time 15 SP2 c-ares Affected
SUSE Linux Enterprise Real Time 15 SP3 c-ares Affected
SUSE Linux Enterprise Real Time 15 SP4 c-ares Affected
SUSE Linux Enterprise Server 15 c-ares Affected
SUSE Linux Enterprise Server 15 SP1 c-ares Affected
SUSE Linux Enterprise Server 15 SP1-BCL c-ares Affected
SUSE Linux Enterprise Server 15 SP1-LTSS c-ares Not affected
SUSE Linux Enterprise Server 15 SP2 c-ares Affected
SUSE Linux Enterprise Server 15 SP2-BCL c-ares Affected
SUSE Linux Enterprise Server 15 SP2-LTSS c-ares Not affected
SUSE Linux Enterprise Server 15 SP3-LTSS c-ares Not affected
SUSE Linux Enterprise Server 15-LTSS c-ares Not affected
SUSE Linux Enterprise Server for SAP Applications 15 c-ares Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 c-ares Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 c-ares Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP3 c-ares Not affected
SUSE Manager Proxy 4.0 c-ares Affected
SUSE Manager Proxy 4.1 c-ares Affected
SUSE Manager Proxy 4.2 c-ares Affected
SUSE Manager Proxy 4.3 c-ares Affected
SUSE Manager Proxy LTS 4.3 c-ares Released
SUSE Manager Retail Branch Server 4.0 c-ares Affected
SUSE Manager Retail Branch Server 4.1 c-ares Affected
SUSE Manager Retail Branch Server 4.2 c-ares Affected
SUSE Manager Retail Branch Server 4.3 c-ares Affected
SUSE Manager Retail Branch Server LTS 4.3 c-ares Released
SUSE Manager Server 4.0 c-ares Affected
SUSE Manager Server 4.1 c-ares Affected
SUSE Manager Server 4.2 c-ares Affected
SUSE Manager Server 4.3 c-ares Affected
SUSE Manager Server LTS 4.3 c-ares Released
openSUSE Leap 15.4 c-ares Affected
openSUSE Leap 15.5 c-ares Affected
openSUSE Leap 15.6 c-ares Not affected
openSUSE Leap Micro 5.2 c-ares Affected
openSUSE Leap Micro 5.3 c-ares Affected
openSUSE Leap Micro 5.4 c-ares Affected
openSUSE Leap Micro 5.5 c-ares Affected

SUSE Timeline for this CVE

CVE page created: Mon Dec 8 19:00:09 2025
CVE page last modified: Thu Sep 10 17:32:27 2026