Upstream information
Description
certain VT-d IOMMUs may not work in shared page table mode For efficiency reasons, address translation control structures (page tables) may (and, on suitable hardware, by default will) be shared between CPUs, for second-level translation (EPT), and IOMMUs. These page tables are presently set up to always be 4 levels deep. However, an IOMMU may require the use of just 3 page table levels. In such a configuration the lop level table needs to be stripped before inserting the root table's address into the hardware pagetable base register. When sharing page tables, Xen erroneously skipped this stripping. Consequently, the guest is able to write to leaf page table entries.SUSE information
Overall state of this security issue: Resolved
This issue is currently rated as having important severity.
| National Vulnerability Database | |
|---|---|
| Base Score | 6.9 |
| Vector | AV:L/AC:M/Au:N/C:C/I:C/A:C |
| Access Vector | Local |
| Access Complexity | Medium |
| Authentication | None |
| Confidentiality Impact | Complete |
| Integrity Impact | Complete |
| Availability Impact | Complete |
| National Vulnerability Database | SUSE | |
|---|---|---|
| Base Score | 8.8 | 7.8 |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| Attack Vector | Local | Local |
| Attack Complexity | Low | Low |
| Privileges Required | Low | Low |
| User Interaction | None | None |
| Scope | Changed | Unchanged |
| Confidentiality Impact | High | High |
| Integrity Impact | High | High |
| Availability Impact | High | High |
| CVSSv3 Version | 3.1 | 3.1 |
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Please note that this evaluation state might be work in progress, incomplete or outdated.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 Enterprise Storage 7.1 | xen | Not affected |
| SUSE Linux Enterprise High Performance Computing 12 SP5 | xen | Not affected |
| SUSE Linux Enterprise Micro 5.1 | xen | Not affected |
| SUSE Linux Enterprise Micro 5.2 | xen | Not affected |
| SUSE Linux Enterprise Real Time 15 SP3 | xen | Not affected |
| SUSE Linux Enterprise Server 12 SP5 | xen | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | xen | Not affected |
| SUSE Linux Enterprise Software Development Kit 12 SP5 | xen | Not affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 15 | 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-ESPOS | xen | Not affected |
| SUSE Linux Enterprise High Performance Computing 15-LTSS | 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 SP2 | xen | Not affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP3 | xen | Not affected |
| SUSE Linux Enterprise Server 15 SP2 | 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-LTSS | xen | Not affected |
| SUSE Linux Enterprise Server 15-ESPOS | xen | Not affected |
| SUSE Linux Enterprise Server Business Critical Linux 15 SP1 | xen | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 | 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 OpenStack Cloud 8 | xen | Not affected |
| SUSE OpenStack Cloud 9 | xen | Not affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| HPE Helion OpenStack 8 | xen | Not affected |
| SUSE CaaS Platform 3.0 | xen | Not affected |
| SUSE CaaS Platform 4.0 | xen | Not affected |
| SUSE Enterprise Storage 6 | xen | Not affected |
| SUSE Enterprise Storage 7 | xen | Not affected |
| SUSE Linux Enterprise Desktop 11 SP4 | xen | Not affected |
| SUSE Linux Enterprise Desktop 12 SP2 | xen | Not affected |
| SUSE Linux Enterprise Desktop 12 SP3 | xen | Not affected |
| SUSE Linux Enterprise Desktop 12 SP4 | xen | Not affected |
| SUSE Linux Enterprise Desktop 15 | 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 Micro 5.0 | xen | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 | xen | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP1 | xen | Not affected |
| SUSE Linux Enterprise Module for Server Applications 15 | xen | Not affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP1 | xen | Not affected |
| SUSE Linux Enterprise Point of Service 11 SP3 | xen | Not affected |
| SUSE Linux Enterprise Real Time 15 SP2 | xen | Not affected |
| SUSE Linux Enterprise Server 11 SP3 | xen | Not affected |
| SUSE Linux Enterprise Server 11 SP3-LTSS | xen | Not affected |
| SUSE Linux Enterprise Server 11 SP4 | xen | Not affected |
| SUSE Linux Enterprise Server 11 SP4 LTSS | xen | Not affected |
| SUSE Linux Enterprise Server 11 SP4-LTSS | xen | Not affected |
| SUSE Linux Enterprise Server 12 SP2 | xen | Not affected |
| SUSE Linux Enterprise Server 12 SP2-BCL | xen | Not affected |
| SUSE Linux Enterprise Server 12 SP2-ESPOS | xen | Not affected |
| SUSE Linux Enterprise Server 12 SP2-LTSS | xen | Not affected |
| SUSE Linux Enterprise Server 12 SP3 | xen | Not affected |
| SUSE Linux Enterprise Server 12 SP3-BCL | xen | Not affected |
| SUSE Linux Enterprise Server 12 SP3-ESPOS | xen | Not affected |
| SUSE Linux Enterprise Server 12 SP3-LTSS | xen | Not affected |
| SUSE Linux Enterprise Server 12 SP4 | xen | Not affected |
| SUSE Linux Enterprise Server 12 SP4-ESPOS | xen | Not affected |
| SUSE Linux Enterprise Server 12 SP4-LTSS | xen | Not affected |
| SUSE Linux Enterprise Server 15 | 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-BCL | xen | Not affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | xen | Not affected |
| SUSE Linux Enterprise Server 15-LTSS | xen | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 11 SP4 | xen | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP2 | xen | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | xen | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | xen | Not affected |
| SUSE Linux Enterprise Software Development Kit 11 SP4 | xen | Not affected |
| SUSE Linux Enterprise Software Development Kit 12 SP2 | xen | Not affected |
| SUSE Linux Enterprise Software Development Kit 12 SP3 | xen | Not affected |
| SUSE Linux Enterprise Software Development Kit 12 SP4 | 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 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 Server 4.0 | xen | Not affected |
| SUSE Manager Server 4.1 | xen | Not affected |
| SUSE Manager Server 4.2 | xen | Not affected |
| SUSE OpenStack Cloud 7 | xen | Not affected |
| SUSE OpenStack Cloud Crowbar 8 | xen | Not affected |
| SUSE OpenStack Cloud Crowbar 9 | xen | Not affected |
SUSE Timeline for this CVE
CVE page created: Fri Nov 19 15:30:23 2021CVE page last modified: Mon Apr 15 15:36:33 2024