Upstream information

CVE-2025-26466 at MITRE

Description

A flaw was found in the OpenSSH package. For each ping packet the SSH server receives, a pong packet is allocated in a memory buffer and stored in a queue of packages. It is only freed when the server/client key exchange has finished. A malicious client may keep sending such packages, leading to an uncontrolled increase in memory consumption on the server side. Consequently, the server may become unavailable, resulting in a denial of service attack.

SUSE information

Overall state of this security issue: Pending

This issue is currently rated as having important severity.

CVSS v3 Scores
  CNA (Red Hat) 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
CVSS v4 Scores
  SUSE
Base Score 8.2
Vector 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
Attack Complexity High
Attack Requirements None
Privileges Required None
User Interaction None
Vulnerable System Confidentiality Impact None
Vulnerable System Integrity Impact None
Vulnerable System Availability Impact High
Subsequent System Confidentiality Impact None
Subsequent System Integrity Impact None
Subsequent System Availability Impact None
CVSSv4 Version 4.0
SUSE Bugzilla entry: 1237041 [IN_PROGRESS]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
Container suse/git:2.43.0-36.16
  • openssh-clients >= 9.6p1-150600.6.15.2
  • openssh-common >= 9.6p1-150600.6.15.2
Container suse/hpc/warewulf4-x86_64/sle-hpc-node:15.6.17.5.105
Image SLES15-SP6
Image SLES15-SP6-BYOS
Image SLES15-SP6-BYOS-GCE
Image SLES15-SP6-CHOST-BYOS
Image SLES15-SP6-CHOST-BYOS-Azure
Image SLES15-SP6-CHOST-BYOS-EC2
Image SLES15-SP6-CHOST-BYOS-GCE
Image SLES15-SP6-CHOST-BYOS-GDC
Image SLES15-SP6-CHOST-BYOS-SAP-CCloud
Image SLES15-SP6-GCE
Image SLES15-SP6-Hardened-BYOS
Image SLES15-SP6-Hardened-BYOS-GCE
Image SLES15-SP6-SAP-BYOS
Image SLES15-SP6-SAP-BYOS-GCE
  • openssh >= 9.6p1-150600.6.15.2
  • openssh-clients >= 9.6p1-150600.6.15.2
  • openssh-common >= 9.6p1-150600.6.15.2
  • openssh-server >= 9.6p1-150600.6.15.2
Container suse/sl-micro/6.1/baremetal-os-container:2.2.0-4.5
  • openssh >= 9.6p1-slfo.1.1_2.1
  • openssh-clients >= 9.6p1-slfo.1.1_2.1
  • openssh-common >= 9.6p1-slfo.1.1_2.1
  • openssh-server >= 9.6p1-slfo.1.1_2.1
SUSE Linux Enterprise Desktop 15 SP6
SUSE Linux Enterprise High Performance Computing 15 SP6
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server for SAP Applications 15 SP6
  • openssh >= 9.6p1-150600.6.15.2
  • openssh-askpass-gnome >= 9.6p1-150600.6.15.1
  • openssh-clients >= 9.6p1-150600.6.15.2
  • openssh-common >= 9.6p1-150600.6.15.2
  • openssh-fips >= 9.6p1-150600.6.15.2
  • openssh-helpers >= 9.6p1-150600.6.15.2
  • openssh-server >= 9.6p1-150600.6.15.2
  • openssh-server-config-disallow-rootlogin >= 9.6p1-150600.6.15.2
 Patchnames:
SUSE-SLE-Module-Basesystem-15-SP6-2025-585
SUSE-SLE-Module-Desktop-Applications-15-SP6-2025-585
SUSE Linux Enterprise Module for Basesystem 15 SP6
  • openssh >= 9.6p1-150600.6.15.2
  • openssh-clients >= 9.6p1-150600.6.15.2
  • openssh-common >= 9.6p1-150600.6.15.2
  • openssh-fips >= 9.6p1-150600.6.15.2
  • openssh-helpers >= 9.6p1-150600.6.15.2
  • openssh-server >= 9.6p1-150600.6.15.2
  • openssh-server-config-disallow-rootlogin >= 9.6p1-150600.6.15.2
 Patchnames:
SUSE-SLE-Module-Basesystem-15-SP6-2025-585
SUSE Linux Enterprise Module for Desktop Applications 15 SP6
  • openssh-askpass-gnome >= 9.6p1-150600.6.15.1
 Patchnames:
SUSE-SLE-Module-Desktop-Applications-15-SP6-2025-585
SUSE Linux Micro 6.1
  • openssh >= 9.6p1-slfo.1.1_2.1
  • openssh-clients >= 9.6p1-slfo.1.1_2.1
  • openssh-common >= 9.6p1-slfo.1.1_2.1
  • openssh-fips >= 9.6p1-slfo.1.1_2.1
  • openssh-server >= 9.6p1-slfo.1.1_2.1
  • openssh-server-config-rootlogin >= 9.6p1-slfo.1.1_2.1
 Patchnames:
SUSE-SLE-Micro-6.1-21
openSUSE Leap 15.6
  • openssh >= 9.6p1-150600.6.15.2
  • openssh-askpass-gnome >= 9.6p1-150600.6.15.1
  • openssh-cavs >= 9.6p1-150600.6.15.2
  • openssh-clients >= 9.6p1-150600.6.15.2
  • openssh-common >= 9.6p1-150600.6.15.2
  • openssh-fips >= 9.6p1-150600.6.15.2
  • openssh-helpers >= 9.6p1-150600.6.15.2
  • openssh-server >= 9.6p1-150600.6.15.2
  • openssh-server-config-disallow-rootlogin >= 9.6p1-150600.6.15.2
 Patchnames:
openSUSE-SLE-15.6-2025-585
openSUSE Tumbleweed
  • openssh >= 9.9p2-1.1
  • openssh-cavs >= 9.9p2-1.1
  • openssh-clients >= 9.9p2-1.1
  • openssh-common >= 9.9p2-1.1
  • openssh-fips >= 9.9p2-1.1
  • openssh-helpers >= 9.9p2-1.1
  • openssh-server >= 9.9p2-1.1
  • openssh-server-config-rootlogin >= 9.9p2-1.1
 Patchnames:
openSUSE-Tumbleweed-2025-14820

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.
SLES15-SP5-CHOST-BYOS-SAP-CCloud openssh Not affected
SLES15-SP6-CHOST-BYOS openssh Released
SLES15-SP6-CHOST-BYOS-Aliyun openssh In progress
SLES15-SP6-CHOST-BYOS-Azure openssh Released
SLES15-SP6-CHOST-BYOS-EC2 openssh Released
SLES15-SP6-CHOST-BYOS-GCE openssh Released
SLES15-SP6-CHOST-BYOS-GDC openssh Released
SLES15-SP6-CHOST-BYOS-SAP-CCloud openssh Released
SUSE Linux Enterprise Desktop 15 SP6 openssh Released
SUSE Linux Enterprise Desktop 15 SP6 openssh-askpass-gnome Released
SUSE Linux Enterprise High Performance Computing 15 SP6 openssh Released
SUSE Linux Enterprise High Performance Computing 15 SP6 openssh-askpass-gnome Released
SUSE Linux Enterprise Micro 5.1 openssh Not affected
SUSE Linux Enterprise Micro 5.2 openssh Not affected
SUSE Linux Enterprise Micro 5.3 openssh Not affected
SUSE Linux Enterprise Micro 5.4 openssh Not affected
SUSE Linux Enterprise Micro 5.5 openssh Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP6 openssh Released
SUSE Linux Enterprise Module for Desktop Applications 15 SP6 openssh Released
SUSE Linux Enterprise Module for Desktop Applications 15 SP6 openssh-askpass-gnome Released
SUSE Linux Enterprise Server 15 SP6 openssh Released
SUSE Linux Enterprise Server 15 SP6 openssh-askpass-gnome Released
SUSE Linux Enterprise Server for SAP Applications 15 SP6 openssh Released
SUSE Linux Enterprise Server for SAP Applications 15 SP6 openssh-askpass-gnome Released
SUSE Linux Micro 6.0 openssh Affected
SUSE Linux Micro 6.1 openssh Released
SUSE Manager Proxy 4.3 openssh Not affected
SUSE Manager Retail Branch Server 4.3 openssh Not affected
SUSE Manager Server 4.3 openssh Not affected
openSUSE Leap 15.6 openssh Released
openSUSE Leap 15.6 openssh-askpass-gnome Released
Products under Long Term Service Pack support and receiving important and critical security fixes.
SLES15-EC2-CHOST-HVM-BYOS openssh Not affected
SLES15-SP1-CHOST-BYOS-Azure openssh Not affected
SLES15-SP1-CHOST-BYOS-EC2 openssh Not affected
SLES15-SP1-CHOST-BYOS-GCE openssh Not affected
SLES15-SP2-CHOST-BYOS-Aliyun openssh Not affected
SLES15-SP2-CHOST-BYOS-Azure openssh Not affected
SLES15-SP2-CHOST-BYOS-EC2 openssh Not affected
SLES15-SP2-CHOST-BYOS-GCE openssh Not affected
SLES15-SP3-CHOST-BYOS-Aliyun openssh Not affected
SLES15-SP3-CHOST-BYOS-Azure openssh Not affected
SLES15-SP3-CHOST-BYOS-EC2 openssh Not affected
SLES15-SP3-CHOST-BYOS-GCE openssh Not affected
SLES15-SP3-CHOST-BYOS-SAP-CCloud openssh Not affected
SLES15-SP4-CHOST-BYOS openssh Not affected
SLES15-SP4-CHOST-BYOS-Aliyun openssh Not affected
SLES15-SP4-CHOST-BYOS-Azure openssh Not affected
SLES15-SP4-CHOST-BYOS-EC2 openssh Not affected
SLES15-SP4-CHOST-BYOS-GCE openssh Not affected
SLES15-SP4-CHOST-BYOS-SAP-CCloud openssh Not affected
SLES15-SP5-CHOST-BYOS-Aliyun openssh Not affected
SLES15-SP5-CHOST-BYOS-Azure openssh Not affected
SLES15-SP5-CHOST-BYOS-EC2 openssh Not affected
SLES15-SP5-CHOST-BYOS-GCE openssh Not affected
SLES15-SP5-CHOST-BYOS-GDC openssh Not affected
SUSE Linux Enterprise High Performance Computing 15 SP3 openssh Not affected
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS openssh Not affected
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS openssh Not affected
SUSE Linux Enterprise High Performance Computing 15 SP4 openssh Not affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS openssh Not affected
SUSE Linux Enterprise High Performance Computing 15 SP5 openssh Not affected
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS openssh Not affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS openssh Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP3 openssh Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP4 openssh Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP5 openssh Not affected
SUSE Linux Enterprise Module for Server Applications 15 SP3 openssh Not affected
SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE openssh Not affected
SUSE Linux Enterprise Server 12 SP5 openssh Not affected
SUSE Linux Enterprise Server 12 SP5 openssh-askpass-gnome Not affected
SUSE Linux Enterprise Server 12 SP5 openssh-testuser Not affected
SUSE Linux Enterprise Server 12 SP5 openssh8.4 Not affected
SUSE Linux Enterprise Server 12 SP5-LTSS openssh Not affected
SUSE Linux Enterprise Server 12 SP5-LTSS openssh-askpass-gnome Not affected
SUSE Linux Enterprise Server 12 SP5-LTSS openssh8.4 Not affected
SUSE Linux Enterprise Server 15 SP3 openssh Not affected
SUSE Linux Enterprise Server 15 SP3-LTSS openssh Not affected
SUSE Linux Enterprise Server 15 SP4 openssh Not affected
SUSE Linux Enterprise Server 15 SP4-LTSS openssh Not affected
SUSE Linux Enterprise Server 15 SP5 openssh Not affected
SUSE Linux Enterprise Server 15 SP5-LTSS openssh Not affected
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 openssh Not affected
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 openssh-askpass-gnome Not affected
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 openssh8.4 Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP5 openssh-testuser Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP3 openssh Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP4 openssh Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP5 openssh Not affected
Products past their end of life and not receiving proactive updates anymore.
HPE Helion OpenStack 8 openssh Not affected
HPE Helion OpenStack 8 openssh-askpass-gnome Not affected
SUSE CaaS Platform 3.0 openssh Not affected
SUSE CaaS Platform 4.0 openssh Not affected
SUSE Enterprise Storage 6 openssh Not affected
SUSE Enterprise Storage 7 openssh Not affected
SUSE Enterprise Storage 7.1 openssh Not affected
SUSE Linux Enterprise Desktop 11 SP4 openssh Not affected
SUSE Linux Enterprise Desktop 12 SP2 openssh Not affected
SUSE Linux Enterprise Desktop 12 SP2 openssh-askpass-gnome Not affected
SUSE Linux Enterprise Desktop 12 SP3 openssh Not affected
SUSE Linux Enterprise Desktop 12 SP3 openssh-askpass-gnome Not affected
SUSE Linux Enterprise Desktop 12 SP4 openssh Not affected
SUSE Linux Enterprise Desktop 12 SP4 openssh-askpass-gnome Not affected
SUSE Linux Enterprise Desktop 15 openssh Not affected
SUSE Linux Enterprise Desktop 15 SP1 openssh Not affected
SUSE Linux Enterprise Desktop 15 SP2 openssh Not affected
SUSE Linux Enterprise Desktop 15 SP3 openssh Not affected
SUSE Linux Enterprise Desktop 15 SP4 openssh Not affected
SUSE Linux Enterprise Desktop 15 SP5 openssh Not affected
SUSE Linux Enterprise High Performance Computing 15 openssh Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1 openssh Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS openssh Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS openssh Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2 openssh Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS openssh Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS openssh Not affected
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS openssh Not affected
SUSE Linux Enterprise High Performance Computing 15-ESPOS openssh Not affected
SUSE Linux Enterprise High Performance Computing 15-LTSS openssh Not affected
SUSE Linux Enterprise Micro 5.0 openssh Not affected
SUSE Linux Enterprise Module for Basesystem 15 openssh Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP1 openssh Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP2 openssh Not affected
SUSE Linux Enterprise Module for Server Applications 15 openssh Not affected
SUSE Linux Enterprise Module for Server Applications 15 SP1 openssh Not affected
SUSE Linux Enterprise Module for Server Applications 15 SP2 openssh Not affected
SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT openssh Not affected
SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT openssh-askpass-gnome Not affected
SUSE Linux Enterprise Real Time 15 SP2 openssh Not affected
SUSE Linux Enterprise Real Time 15 SP3 openssh Not affected
SUSE Linux Enterprise Real Time 15 SP4 openssh Not affected
SUSE Linux Enterprise Server 11 SP4 openssh Not affected
SUSE Linux Enterprise Server 11 SP4 LTSS openssh Not affected
SUSE Linux Enterprise Server 11 SP4-LTSS openssh Not affected
SUSE Linux Enterprise Server 12 SP2 openssh Not affected
SUSE Linux Enterprise Server 12 SP2 openssh-askpass-gnome Not affected
SUSE Linux Enterprise Server 12 SP2-BCL openssh Not affected
SUSE Linux Enterprise Server 12 SP2-BCL openssh-askpass-gnome Not affected
SUSE Linux Enterprise Server 12 SP2-ESPOS openssh Not affected
SUSE Linux Enterprise Server 12 SP2-ESPOS openssh-askpass-gnome Not affected
SUSE Linux Enterprise Server 12 SP2-LTSS openssh Not affected
SUSE Linux Enterprise Server 12 SP2-LTSS openssh-askpass-gnome Not affected
SUSE Linux Enterprise Server 12 SP3 openssh Not affected
SUSE Linux Enterprise Server 12 SP3 openssh-askpass-gnome Not affected
SUSE Linux Enterprise Server 12 SP3-BCL openssh Not affected
SUSE Linux Enterprise Server 12 SP3-BCL openssh-askpass-gnome Not affected
SUSE Linux Enterprise Server 12 SP3-ESPOS openssh Not affected
SUSE Linux Enterprise Server 12 SP3-ESPOS openssh-askpass-gnome Not affected
SUSE Linux Enterprise Server 12 SP3-LTSS openssh Not affected
SUSE Linux Enterprise Server 12 SP3-LTSS openssh-askpass-gnome Not affected
SUSE Linux Enterprise Server 12 SP4 openssh Not affected
SUSE Linux Enterprise Server 12 SP4 openssh-askpass-gnome Not affected
SUSE Linux Enterprise Server 12 SP4-ESPOS openssh Not affected
SUSE Linux Enterprise Server 12 SP4-LTSS openssh Not affected
SUSE Linux Enterprise Server 15 openssh Not affected
SUSE Linux Enterprise Server 15 SP1 openssh Not affected
SUSE Linux Enterprise Server 15 SP1-BCL openssh Not affected
SUSE Linux Enterprise Server 15 SP1-LTSS openssh Not affected
SUSE Linux Enterprise Server 15 SP2 openssh Not affected
SUSE Linux Enterprise Server 15 SP2-BCL openssh Not affected
SUSE Linux Enterprise Server 15 SP2-LTSS openssh Not affected
SUSE Linux Enterprise Server 15 SP3-BCL openssh Not affected
SUSE Linux Enterprise Server 15-LTSS openssh Not affected
SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 openssh Not affected
SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 openssh-askpass-gnome Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP2 openssh Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP2 openssh-askpass-gnome Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP3 openssh Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP3 openssh-askpass-gnome Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP4 openssh Not affected
SUSE Linux Enterprise Server for SAP Applications 15 openssh Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 openssh Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 openssh Not affected
SUSE Linux Enterprise Software Development Kit 12 SP5 openssh-testuser Not affected
SUSE Manager Proxy 4.0 openssh Not affected
SUSE Manager Proxy 4.1 openssh Not affected
SUSE Manager Proxy 4.2 openssh Not affected
SUSE Manager Retail Branch Server 4.0 openssh Not affected
SUSE Manager Retail Branch Server 4.1 openssh Not affected
SUSE Manager Retail Branch Server 4.2 openssh Not affected
SUSE Manager Server 4.0 openssh Not affected
SUSE Manager Server 4.1 openssh Not affected
SUSE Manager Server 4.2 openssh Not affected
SUSE OpenStack Cloud 7 openssh Not affected
SUSE OpenStack Cloud 7 openssh-askpass-gnome Not affected
SUSE OpenStack Cloud 8 openssh Not affected
SUSE OpenStack Cloud 8 openssh-askpass-gnome Not affected
SUSE OpenStack Cloud 9 openssh Not affected
SUSE OpenStack Cloud Crowbar 8 openssh Not affected
SUSE OpenStack Cloud Crowbar 8 openssh-askpass-gnome Not affected
SUSE OpenStack Cloud Crowbar 9 openssh Not affected
openSUSE Leap 15.3 openssh Not affected
openSUSE Leap 15.4 openssh Not affected
openSUSE Leap 15.5 openssh Not affected
openSUSE Leap Micro 5.2 openssh Not affected
openSUSE Leap Micro 5.3 openssh Not affected
openSUSE Leap Micro 5.4 openssh Not affected
openSUSE Leap Micro 5.5 openssh Not affected
Container Status
ses/7.1/cephcsi/cephcsi
ses/7.1/rook/ceph
ses/7/ceph/ceph
ses/7/cephcsi/cephcsi
ses/7/rook/ceph
suse/manager/4.3/proxy-ssh
suse/sle-micro-rancher/5.2
suse/sle-micro-rancher/5.3
suse/sle-micro-rancher/5.4
suse/sle-micro/5.5
trento/trento-runner		 opensshNot affected
suse/hpc/warewulf4-x86_64/sle-hpc-node opensshReleased
suse/manager/5.0/x86_64/proxy-ssh
suse/manager/5.0/x86_64/server
suse/manager/5.1/x86_64/proxy-ssh
suse/manager/5.1/x86_64/server		 opensshIn progress

SUSE Timeline for this CVE

CVE page created: Tue Feb 11 14:15:11 2025
CVE page last modified: Fri Mar 21 18:06:38 2025