Upstream information
Description
[This CNA information record relates to multiple CVEs; thetext explains which aspects/vulnerabilities correspond to which CVE.]
1) XSA-437 (CVE-2023-34321) addressed issues with overflows in
calculations involved in guests flushing caches through
GNTTABOP_cache_flush. Unfortunately the fix there introduced a
calculation which may underflow, resulting in a loop which would - at
least on 64-bit Arm - take excessively long, and which would likely
eventually crash the hypervisor.
This is CVE-2026-102699.
2) GNTTABOP_cache_flush may be issued on memory mapped from another
domain using the grant table interface. However there was no
restriction to disallow the use of invalidate-without-clean against
read-only grant mappings, which may corrupt the granted memory.
This is CVE-2026-102702.
SUSE information
Overall state of this security issue: Resolved
This issue is currently rated as having moderate severity.
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: 1283324 [NEW] No SUSE Security Announcements cross referenced.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Please note that this evaluation state might be work in progress, incomplete or outdated.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 | Not affected |
| SUSE Linux Enterprise Micro 5.3 | xen | Not affected |
| SUSE Linux Enterprise Micro 5.4 | xen | Not affected |
| SUSE Linux Enterprise Micro 5.5 | xen | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | xen | Not affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP7 | xen | Not affected |
| SUSE Linux Enterprise Server 15 SP7 | xen | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | xen | Not affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 12 SP5 | xen | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | xen | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | xen | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | xen | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP4 | xen | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP5 | xen | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP6 | xen | Not affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP4 | xen | Not affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP5 | xen | Not affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP6 | xen | Not affected |
| SUSE Linux Enterprise Server 12 SP5 | xen | Not affected |
| SUSE Linux Enterprise Server 12 SP5-LTSS | xen | Not affected |
| SUSE Linux Enterprise Server 15 SP4 | xen | Not affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | xen | Not affected |
| SUSE Linux Enterprise Server 15 SP5 | xen | Not affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | xen | Not affected |
| SUSE Linux Enterprise Server 15 SP6 | xen | Not affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | xen | Not affected |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | xen | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | xen | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | xen | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | xen | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | xen | Not affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE CaaS Platform 4.0 | xen | Not affected |
| SUSE Enterprise Storage 6 | xen | Not affected |
| SUSE Enterprise Storage 7 | xen | Not affected |
| SUSE Enterprise Storage 7.1 | xen | Not affected |
| SUSE Linux Enterprise Desktop 15 SP1 | xen | Not affected |
| SUSE Linux Enterprise Desktop 15 SP2 | xen | Not affected |
| SUSE Linux Enterprise Desktop 15 SP3 | xen | Not affected |
| SUSE Linux Enterprise Desktop 15 SP4 | xen | Not affected |
| SUSE Linux Enterprise Desktop 15 SP5 | xen | Not affected |
| SUSE Linux Enterprise Desktop 15 SP6 | xen | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1 | xen | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | xen | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | xen | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | xen | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | xen | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | xen | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | xen | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | xen | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | xen | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | xen | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | xen | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | xen | Not affected |
| SUSE Linux Enterprise Micro 5.0 | xen | Not affected |
| SUSE Linux Enterprise Micro 5.1 | xen | Not affected |
| SUSE Linux Enterprise Micro 5.2 | xen | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP1 | xen | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP2 | xen | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP3 | xen | Not affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP1 | xen | Not affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP2 | xen | Not affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP3 | xen | Not affected |
| SUSE Linux Enterprise Real Time 15 SP2 | xen | Not affected |
| SUSE Linux Enterprise Real Time 15 SP3 | xen | Not affected |
| SUSE Linux Enterprise Real Time 15 SP4 | xen | Not affected |
| SUSE Linux Enterprise Server 15 SP1 | xen | Not affected |
| SUSE Linux Enterprise Server 15 SP1-BCL | xen | Not affected |
| SUSE Linux Enterprise Server 15 SP1-LTSS | xen | Not affected |
| SUSE Linux Enterprise Server 15 SP2 | xen | Not affected |
| SUSE Linux Enterprise Server 15 SP2-BCL | xen | Not affected |
| SUSE Linux Enterprise Server 15 SP2-LTSS | xen | Not affected |
| SUSE Linux Enterprise Server 15 SP3 | xen | Not affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | xen | Not affected |
| SUSE Linux Enterprise Server 15 SP3-LTSS | xen | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | xen | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | xen | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | xen | Not affected |
| SUSE Linux Enterprise Software Development Kit 12 SP5 | xen | Not affected |
| SUSE Manager Proxy 4.0 | xen | Not affected |
| SUSE Manager Proxy 4.1 | xen | Not affected |
| SUSE Manager Proxy 4.2 | xen | Not affected |
| SUSE Manager Proxy 4.3 | xen | Not affected |
| SUSE Manager Proxy LTS 4.3 | xen | Not affected |
| SUSE Manager Retail Branch Server 4.0 | xen | Not affected |
| SUSE Manager Retail Branch Server 4.1 | xen | Not affected |
| SUSE Manager Retail Branch Server 4.2 | xen | Not affected |
| SUSE Manager Retail Branch Server 4.3 | xen | Not affected |
| SUSE Manager Retail Branch Server LTS 4.3 | xen | Not affected |
| SUSE Manager Server 4.0 | xen | Not affected |
| SUSE Manager Server 4.1 | xen | Not affected |
| SUSE Manager Server 4.2 | xen | Not affected |
| SUSE Manager Server 4.3 | xen | Not affected |
| SUSE Manager Server LTS 4.3 | xen | Not affected |
| openSUSE Leap 15.3 | xen | Not affected |
| openSUSE Leap 15.4 | xen | Not affected |
| openSUSE Leap 15.5 | xen | Not affected |
| openSUSE Leap 15.6 | xen | Not affected |
| openSUSE Leap Micro 5.2 | xen | Not affected |
| openSUSE Leap Micro 5.3 | xen | Not affected |
| openSUSE Leap Micro 5.4 | xen | Not affected |
| openSUSE Leap Micro 5.5 | xen | Not affected |
SUSE Timeline for this CVE
CVE page created: Tue Oct 13 17:05:11 2026CVE page last modified: Tue Oct 13 20:58:05 2026