Upstream information
Description
[This CNA information record relates to multiple CVEs; thetext explains which aspects/vulnerabilities correspond to which CVE.]
With the introduction of Grant Table v2 came the requirement to be able to
switch between versions. Switching from v1 to v2 reduces the number of
valid grant references, as a bigger shared entry structure is then needed
while the shared table doesn't change size. Switching from v2 back to v1
the status frames, which are separate in v2, go away.
Code holding, but intermediately dropping and then re-acquiring the grant
table lock, sometimes wrongly assumes that said properties wouldn't change
across the window in time where the lock is not being held.
The v1 -> v2 issue is CVE-2026-62435.
The v2 -> v1 issue is CVE-2026-62436.
SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having important severity.
| CVSS detail | SUSE |
|---|---|
| Base Score | 8.1 |
| Vector | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H |
| Attack Vector | Local |
| Attack Complexity | High |
| Privileges Required | None |
| User Interaction | None |
| Scope | Changed |
| Confidentiality Impact | High |
| Integrity Impact | High |
| Availability Impact | High |
| CVSSv3 Version | 3.1 |
| CVSS detail | SUSE |
|---|---|
| Base Score | 8.9 |
| Vector | CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H |
| Attack Vector | Local |
| Attack Complexity | Low |
| Attack Requirements | Present |
| Privileges Required | None |
| User Interaction | None |
| Vulnerable System Confidentiality Impact | High |
| Vulnerable System Integrity Impact | High |
| Vulnerable System Availability Impact | High |
| Subsequent System Confidentiality Impact | High |
| Subsequent System Integrity Impact | High |
| Subsequent System Availability Impact | High |
| 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: 1271533 [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Please note that this evaluation state might be work in progress, incomplete or outdated.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 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP7 | xen | Affected |
| SUSE Linux Enterprise Micro 5.3 | xen | Affected |
| SUSE Linux Enterprise Micro 5.4 | xen | Affected |
| SUSE Linux Enterprise Micro 5.5 | xen | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | xen | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP7 | xen | Affected |
| SUSE Linux Enterprise Server 15 SP7 | xen | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | xen | Affected |
| 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 | xen | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | xen | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | xen | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | xen | Affected |
| 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 | Affected |
| SUSE Linux Enterprise Server 12 SP5-LTSS Extended Security | xen | Affected |
| SUSE Linux Enterprise Server 15 SP4 | xen | Affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | xen | Affected |
| SUSE Linux Enterprise Server 15 SP5 | xen | Affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | xen | Affected |
| 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 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | xen | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | xen | Affected |
| SUSE Manager Proxy 4.3 | xen | Affected |
| SUSE Manager Proxy LTS 4.3 | xen | Affected |
| SUSE Manager Retail Branch Server 4.3 | xen | Affected |
| SUSE Manager Retail Branch Server LTS 4.3 | xen | Affected |
| SUSE Manager Server 4.3 | xen | Affected |
| SUSE Manager Server LTS 4.3 | 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-ESPOS | xen | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | xen | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP6 | xen | Affected |
| 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 Server for SAP Applications 15 SP4 | xen | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | 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 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 Server 4.0 | xen | Affected |
| SUSE Manager Server 4.1 | xen | Affected |
| SUSE Manager Server 4.2 | xen | Affected |
| openSUSE Leap 15.3 | xen | Affected |
| openSUSE Leap 15.4 | xen | Affected |
| openSUSE Leap 15.5 | xen | Affected |
| 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 Jul 28 15:34:42 2026CVE page last modified: Tue Jul 28 16:34:51 2026