Upstream information

CVE-2026-79611 at MITRE

Description

For XSA-308 logic was introduced, as VMX VMEntry checks do not like the
exact combination of state which occurs when #DB in intercepted, Single
Stepping is active, and blocked by STI/MovSS is active, despite this being
a legitimate state to be in. The resulting VMEntry failure is fatal to
the guest.

Sadly there is another special sub-case of the above, with branch tracing
enabled. In that case the prior adjustment would still cause a VMentry
failure, as before fatal to the guest.

SUSE information

Overall state of this security issue: Pending

This issue is currently rated as having moderate severity.

CVSS v3 Scores
CVSS detail SUSE
Base Score 5.5
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
CVSSv3 Version 3.1
CVSS v4 Scores
CVSS detail SUSE
Base Score 6.8
Vector CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Attack Vector Local
Attack Complexity Low
Attack Requirements None
Privileges Required Low
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

Note from the SUSE Security Team on the xen package

This issue likely only affects the XEN hypervisor itself, unless otherwise stated. The userland utilities in -tools and libraries in -libs are shipped together with the xen hypervisor as they are built from one source and do not contain hypervisor specific fixes.

SUSE Bugzilla entry: 1283323 [NEW]

No SUSE Security Announcements cross referenced.

List of released packages

Product(s) Fixed package version(s) References
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS
  • xen >= 4.16.7_16-150400.4.95.1
  • xen-devel >= 4.16.7_16-150400.4.95.1
  • xen-libs >= 4.16.7_16-150400.4.95.1
  • xen-tools >= 4.16.7_16-150400.4.95.1
  • xen-tools-domU >= 4.16.7_16-150400.4.95.1
  • xen-tools-xendomains-wait-disk >= 4.16.7_16-150400.4.95.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-4642 (x86_64)
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS
  • xen >= 4.16.7_16-150400.4.95.1
  • xen-devel >= 4.16.7_16-150400.4.95.1
  • xen-libs >= 4.16.7_16-150400.4.95.1
  • xen-tools >= 4.16.7_16-150400.4.95.1
  • xen-tools-domU >= 4.16.7_16-150400.4.95.1
  • xen-tools-xendomains-wait-disk >= 4.16.7_16-150400.4.95.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-4642 (x86_64)
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS
  • xen >= 4.17.7_02-150500.3.82.1
  • xen-devel >= 4.17.7_02-150500.3.82.1
  • xen-libs >= 4.17.7_02-150500.3.82.1
  • xen-tools >= 4.17.7_02-150500.3.82.1
  • xen-tools-domU >= 4.17.7_02-150500.3.82.1
  • xen-tools-xendomains-wait-disk >= 4.17.7_02-150500.3.82.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-4641 (x86_64)
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS
  • xen >= 4.17.7_02-150500.3.82.1
  • xen-devel >= 4.17.7_02-150500.3.82.1
  • xen-libs >= 4.17.7_02-150500.3.82.1
  • xen-tools >= 4.17.7_02-150500.3.82.1
  • xen-tools-domU >= 4.17.7_02-150500.3.82.1
  • xen-tools-xendomains-wait-disk >= 4.17.7_02-150500.3.82.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-4641 (x86_64)
SUSE Linux Enterprise Micro 5.3
  • xen-libs >= 4.16.7_16-150400.4.95.1
 Patchnames:
SUSE-SLE-Micro-5.3-2026-4642 (x86_64)
SUSE Linux Enterprise Micro 5.4
  • xen-libs >= 4.16.7_16-150400.4.95.1
 Patchnames:
SUSE-SLE-Micro-5.4-2026-4642 (x86_64)
SUSE Linux Enterprise Micro 5.5
  • xen-libs >= 4.17.7_02-150500.3.82.1
 Patchnames:
SUSE-SLE-Micro-5.5-2026-4641 (x86_64)
SUSE Linux Enterprise Server 15 SP4-LTSS
  • xen >= 4.16.7_16-150400.4.95.1
  • xen-devel >= 4.16.7_16-150400.4.95.1
  • xen-libs >= 4.16.7_16-150400.4.95.1
  • xen-tools >= 4.16.7_16-150400.4.95.1
  • xen-tools-domU >= 4.16.7_16-150400.4.95.1
  • xen-tools-xendomains-wait-disk >= 4.16.7_16-150400.4.95.1
 Patchnames:
SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-4642 (x86_64)
SUSE Linux Enterprise Server 15 SP5-LTSS
  • xen >= 4.17.7_02-150500.3.82.1
  • xen-devel >= 4.17.7_02-150500.3.82.1
  • xen-libs >= 4.17.7_02-150500.3.82.1
  • xen-tools >= 4.17.7_02-150500.3.82.1
  • xen-tools-domU >= 4.17.7_02-150500.3.82.1
  • xen-tools-xendomains-wait-disk >= 4.17.7_02-150500.3.82.1
 Patchnames:
SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-4641 (x86_64)
SUSE Linux Enterprise Server for SAP Applications 15 SP4
  • xen >= 4.16.7_16-150400.4.95.1
  • xen-devel >= 4.16.7_16-150400.4.95.1
  • xen-libs >= 4.16.7_16-150400.4.95.1
  • xen-tools >= 4.16.7_16-150400.4.95.1
  • xen-tools-domU >= 4.16.7_16-150400.4.95.1
  • xen-tools-xendomains-wait-disk >= 4.16.7_16-150400.4.95.1
 Patchnames:
SUSE-SLE-Product-SLES_SAP-15-SP4-2026-4642 (x86_64)
SUSE Linux Enterprise Server for SAP Applications 15 SP5
  • xen >= 4.17.7_02-150500.3.82.1
  • xen-devel >= 4.17.7_02-150500.3.82.1
  • xen-libs >= 4.17.7_02-150500.3.82.1
  • xen-tools >= 4.17.7_02-150500.3.82.1
  • xen-tools-domU >= 4.17.7_02-150500.3.82.1
  • xen-tools-xendomains-wait-disk >= 4.17.7_02-150500.3.82.1
 Patchnames:
SUSE-SLE-Product-SLES_SAP-15-SP5-2026-4641 (x86_64)

List of packages in QA

Product(s) Package(s)
SUSE Linux Enterprise Module for Basesystem 15 SP7
  • xen-libs >= 4.20.4_06-150700.3.49.1
  • xen-tools-domU >= 4.20.4_06-150700.3.49.1
SUSE Linux Enterprise Server 15 SP7
  • xen-libs >= 4.20.4_06-150700.3.49.1
  • xen-tools-domU >= 4.20.4_06-150700.3.49.1
SUSE Linux Enterprise Desktop 15 SP7
  • xen-libs >= 4.20.4_06-150700.3.49.1
  • xen-tools-domU >= 4.20.4_06-150700.3.49.1
SUSE Linux Enterprise Server for SAP Applications 15 SP7
  • xen-libs >= 4.20.4_06-150700.3.49.1
  • xen-tools-domU >= 4.20.4_06-150700.3.49.1
SUSE Linux Enterprise Module for Server Applications 15 SP7
  • xen >= 4.20.4_06-150700.3.49.1
  • xen-devel >= 4.20.4_06-150700.3.49.1
  • xen-tools >= 4.20.4_06-150700.3.49.1
  • xen-tools-xendomains-wait-disk >= 4.20.4_06-150700.3.49.1
SUSE Linux Enterprise Server 15 SP7
  • xen >= 4.20.4_06-150700.3.49.1
  • xen-devel >= 4.20.4_06-150700.3.49.1
  • xen-tools >= 4.20.4_06-150700.3.49.1
  • xen-tools-xendomains-wait-disk >= 4.20.4_06-150700.3.49.1
SUSE Linux Enterprise Server for SAP Applications 15 SP7
  • xen >= 4.20.4_06-150700.3.49.1
  • xen-devel >= 4.20.4_06-150700.3.49.1
  • xen-tools >= 4.20.4_06-150700.3.49.1
  • xen-tools-xendomains-wait-disk >= 4.20.4_06-150700.3.49.1
SUSE Linux Enterprise Server 12 SP5-LTSS
  • xen >= 4.12.4_76-3.154.1
  • xen-devel >= 4.12.4_76-3.154.1
  • xen-doc-html >= 4.12.4_76-3.154.1
  • xen-libs >= 4.12.4_76-3.154.1
  • xen-libs-32bit >= 4.12.4_76-3.154.1
  • xen-tools >= 4.12.4_76-3.154.1
  • xen-tools-domU >= 4.12.4_76-3.154.1
SUSE Linux Enterprise Server 12 SP5-LTSS
  • xen >= 4.12.4_76-3.154.1
  • xen-devel >= 4.12.4_76-3.154.1
  • xen-doc-html >= 4.12.4_76-3.154.1
  • xen-libs >= 4.12.4_76-3.154.1
  • xen-libs-32bit >= 4.12.4_76-3.154.1
  • xen-tools >= 4.12.4_76-3.154.1
  • xen-tools-domU >= 4.12.4_76-3.154.1
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5
  • xen >= 4.12.4_76-3.154.1
  • xen-devel >= 4.12.4_76-3.154.1
  • xen-doc-html >= 4.12.4_76-3.154.1
  • xen-libs >= 4.12.4_76-3.154.1
  • xen-libs-32bit >= 4.12.4_76-3.154.1
  • xen-tools >= 4.12.4_76-3.154.1
  • xen-tools-domU >= 4.12.4_76-3.154.1
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5
  • xen >= 4.12.4_76-3.154.1
  • xen-devel >= 4.12.4_76-3.154.1
  • xen-doc-html >= 4.12.4_76-3.154.1
  • xen-libs >= 4.12.4_76-3.154.1
  • xen-libs-32bit >= 4.12.4_76-3.154.1
  • xen-tools >= 4.12.4_76-3.154.1
  • xen-tools-domU >= 4.12.4_76-3.154.1

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 xen In progress
SUSE Linux Enterprise Micro 5.3 xen Released
SUSE Linux Enterprise Micro 5.4 xen Released
SUSE Linux Enterprise Micro 5.5 xen Released
SUSE Linux Enterprise Micro for Rancher 5.3 xen Released
SUSE Linux Enterprise Micro for Rancher 5.4 xen Released
SUSE Linux Enterprise Module for Basesystem 15 SP7 xen In progress
SUSE Linux Enterprise Module for Server Applications 15 SP7 xen In progress
SUSE Linux Enterprise Server 15 SP7 xen In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP7 xen In progress
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise High Performance Computing 12 SP5 xen Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS xen Released
SUSE Linux Enterprise High Performance Computing 15 SP5 xen Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS xen Released
SUSE Linux Enterprise Module for Basesystem 15 SP4 xen Affected
SUSE Linux Enterprise Module for Basesystem 15 SP5 xen Affected
SUSE Linux Enterprise Module for Basesystem 15 SP6 xen Affected
SUSE Linux Enterprise Module for Server Applications 15 SP4 xen Affected
SUSE Linux Enterprise Module for Server Applications 15 SP5 xen Affected
SUSE Linux Enterprise Module for Server Applications 15 SP6 xen Affected
SUSE Linux Enterprise Server 12 SP5 xen Affected
SUSE Linux Enterprise Server 12 SP5-LTSS xen In progress
SUSE Linux Enterprise Server 15 SP4 xen Affected
SUSE Linux Enterprise Server 15 SP4-LTSS xen Released
SUSE Linux Enterprise Server 15 SP5 xen Affected
SUSE Linux Enterprise Server 15 SP5-LTSS xen Released
SUSE Linux Enterprise Server 15 SP6 xen Affected
SUSE Linux Enterprise Server 15 SP6-LTSS xen Affected
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 xen In progress
SUSE Linux Enterprise Server for SAP Applications 12 SP5 xen Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP4 xen Released
SUSE Linux Enterprise Server for SAP Applications 15 SP5 xen Released
SUSE Linux Enterprise Server for SAP Applications 15 SP6 xen Affected
Products past their end of life and not receiving proactive updates anymore.
SUSE CaaS Platform 4.0 xen Affected
SUSE Enterprise Storage 6 xen Affected
SUSE Enterprise Storage 7 xen Affected
SUSE Enterprise Storage 7.1 xen Affected
SUSE Linux Enterprise Desktop 15 SP1 xen Affected
SUSE Linux Enterprise Desktop 15 SP2 xen Affected
SUSE Linux Enterprise Desktop 15 SP3 xen Affected
SUSE Linux Enterprise Desktop 15 SP4 xen Affected
SUSE Linux Enterprise Desktop 15 SP5 xen Affected
SUSE Linux Enterprise Desktop 15 SP6 xen Affected
SUSE Linux Enterprise High Performance Computing 15 SP1 xen Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS xen Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS xen Affected
SUSE Linux Enterprise High Performance Computing 15 SP2 xen Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS xen Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS xen Affected
SUSE Linux Enterprise High Performance Computing 15 SP3 xen Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS xen Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS xen Affected
SUSE Linux Enterprise High Performance Computing 15 SP4 xen Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS xen Released
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS xen Released
SUSE Linux Enterprise Micro 5.0 xen Affected
SUSE Linux Enterprise Micro 5.1 xen Affected
SUSE Linux Enterprise Micro 5.2 xen Affected
SUSE Linux Enterprise Module for Basesystem 15 SP1 xen Affected
SUSE Linux Enterprise Module for Basesystem 15 SP2 xen Affected
SUSE Linux Enterprise Module for Basesystem 15 SP3 xen Affected
SUSE Linux Enterprise Module for Server Applications 15 SP1 xen Affected
SUSE Linux Enterprise Module for Server Applications 15 SP2 xen Affected
SUSE Linux Enterprise Module for Server Applications 15 SP3 xen Affected
SUSE Linux Enterprise Real Time 15 SP2 xen Affected
SUSE Linux Enterprise Real Time 15 SP3 xen Affected
SUSE Linux Enterprise Real Time 15 SP4 xen Affected
SUSE Linux Enterprise Server 15 SP1 xen Affected
SUSE Linux Enterprise Server 15 SP1-BCL xen Affected
SUSE Linux Enterprise Server 15 SP1-LTSS xen Affected
SUSE Linux Enterprise Server 15 SP2 xen Affected
SUSE Linux Enterprise Server 15 SP2-BCL xen Affected
SUSE Linux Enterprise Server 15 SP2-LTSS xen Affected
SUSE Linux Enterprise Server 15 SP3 xen Affected
SUSE Linux Enterprise Server 15 SP3-BCL xen Affected
SUSE Linux Enterprise Server 15 SP3-LTSS xen Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 xen Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 xen Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP3 xen Affected
SUSE Linux Enterprise Software Development Kit 12 SP5 xen Affected
SUSE Manager Proxy 4.0 xen Affected
SUSE Manager Proxy 4.1 xen Affected
SUSE Manager Proxy 4.2 xen Affected
SUSE Manager Proxy 4.3 xen Affected
SUSE Manager Proxy LTS 4.3 xen Affected
SUSE Manager Retail Branch Server 4.0 xen Affected
SUSE Manager Retail Branch Server 4.1 xen Affected
SUSE Manager Retail Branch Server 4.2 xen Affected
SUSE Manager Retail Branch Server 4.3 xen Affected
SUSE Manager Retail Branch Server LTS 4.3 xen Affected
SUSE Manager Server 4.0 xen Affected
SUSE Manager Server 4.1 xen Affected
SUSE Manager Server 4.2 xen Affected
SUSE Manager Server 4.3 xen Affected
SUSE Manager Server LTS 4.3 xen Affected
openSUSE Leap 15.3 xen Affected
openSUSE Leap 15.4 xen Released
openSUSE Leap 15.5 xen Released
openSUSE Leap 15.6 xen Affected
openSUSE Leap Micro 5.2 xen Affected
openSUSE Leap Micro 5.3 xen Affected
openSUSE Leap Micro 5.4 xen Affected
openSUSE Leap Micro 5.5 xen Affected

SUSE Timeline for this CVE

CVE page created: Tue Oct 13 16:59:38 2026
CVE page last modified: Tue Oct 13 20:52:36 2026