Upstream information
Description
An issue was discovered in Xen through 4.13.x, allowing guest OS users to cause a denial of service or possibly gain privileges because of missing memory barriers in read-write unlock paths. The read-write unlock paths don't contain a memory barrier. On Arm, this means a processor is allowed to re-order the memory access with the preceding ones. In other words, the unlock may be seen by another processor before all the memory accesses within the "critical" section. As a consequence, it may be possible to have a writer executing a critical section at the same time as readers or another writer. In other words, many of the assumptions (e.g., a variable cannot be modified after a check) in the critical sections are not safe anymore. The read-write locks are used in hypercalls (such as grant-table ones), so a malicious guest could exploit the race. For instance, there is a small window where Xen can leak memory if XENMAPSPACE_grant_table is used concurrently. A malicious guest may be able to leak memory, or cause a hypervisor crash resulting in a Denial of Service (DoS). Information leak and privilege escalation cannot be excluded.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 | |
---|---|
Base Score | 7.8 |
Vector | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H |
Access Vector | Local |
Access Complexity | High |
Privileges Required | Low |
User Interaction | None |
Scope | Changed |
Confidentiality Impact | High |
Integrity Impact | High |
Availability Impact | High |
CVSSv3 Version | 3.1 |
- SUSE-IU-2020:117-1, published Mon Dec 14 03:22:53 MST 2020
- SUSE-SU-2020:1124-1, published Tue Apr 28 04:19:52 MDT 2020
- SUSE-SU-2020:1138-1, published Wed Apr 29 10:28:02 MDT 2020
- SUSE-SU-2020:1139-1, published Wed Apr 29 11:04:22 MDT 2020
- SUSE-SU-2020:1630-1, published Tue Jun 16 13:12:19 MDT 2020
- SUSE-SU-2020:1634-1, published Wed Jun 17 07:12:54 MDT 2020
- SUSE-SU-2020:2234-1, published Thu Aug 13 07:18:25 MDT 2020
- openSUSE-SU-2020:0599-1, published Sat, 2 May 2020 00:40:00 +0200 (CEST)
List of released packages
Product(s) | Fixed package version(s) | References |
---|---|---|
HPE Helion Openstack 8 |
| Patchnames: HPE-Helion-OpenStack-8-2020-1630 |
Image SLES12-SP4-EC2-HVM-BYOS Image SLES12-SP4-SAP-EC2-HVM Image SLES12-SP4-SAP-EC2-HVM-BYOS |
| |
Image SLES12-SP5-EC2 Image SLES12-SP5-EC2-BYOS Image SLES12-SP5-EC2-ECS-On-Demand Image SLES12-SP5-EC2-On-Demand Image SLES12-SP5-EC2-SAP-BYOS Image SLES12-SP5-EC2-SAP-On-Demand |
| |
Image SLES15-EC2-CHOST-HVM-BYOS Image SLES15-EC2-HVM-BYOS Image SLES15-SAP-EC2-HVM Image SLES15-SAP-EC2-HVM-BYOS |
| |
Image SLES15-SP1-CAP-Deployment-BYOS-EC2-HVM Image SLES15-SP1-CHOST-BYOS-EC2 Image SLES15-SP1-EC2-HPC-HVM-BYOS Image SLES15-SP1-EC2-HVM-BYOS Image SLES15-SP1-Manager-4-0-EC2-HVM-BYOS-Proxy Image SLES15-SP1-Manager-4-0-EC2-HVM-BYOS-Server Image SLES15-SP1-SAP-EC2-HVM Image SLES15-SP1-SAP-EC2-HVM-BYOS Image SLES15-SP1-SAPCAL-EC2-HVM |
| |
SUSE Enterprise Storage 5 |
| Patchnames: SUSE-Storage-5-2020-1630 |
SUSE Linux Enterprise Desktop 12 SP4 SUSE Linux Enterprise Software Development Kit 12 SP4 |
| Patchnames: SUSE-SLE-SDK-12-SP4-2020-1138 |
SUSE Linux Enterprise Desktop 15 SP1 SUSE Linux Enterprise Module for Basesystem 15 SP1 |
| Patchnames: SUSE-SLE-Module-Basesystem-15-SP1-2020-1124 |
SUSE Linux Enterprise Desktop 15 SP2 SUSE Linux Enterprise Module for Basesystem 15 SP2 |
| Patchnames: SUSE Linux Enterprise Module for Basesystem 15 SP2 GA xen-libs-4.13.1_02-1.2 |
SUSE Linux Enterprise Desktop 15 SP3 SUSE Linux Enterprise Module for Basesystem 15 SP3 |
| Patchnames: SUSE Linux Enterprise Module for Basesystem 15 SP3 GA xen-libs-4.14.1_16-1.6 |
SUSE Linux Enterprise Desktop 15 SP4 SUSE Linux Enterprise Module for Basesystem 15 SP4 |
| Patchnames: SUSE Linux Enterprise Module for Basesystem 15 SP4 GA xen-libs-4.16.0_08-150400.2.12 |
SUSE Linux Enterprise High Performance Computing 15 SP1 SUSE Linux Enterprise Server 15 SP1 SUSE Linux Enterprise Server for SAP Applications 15 SP1 SUSE Linux Enterprise Storage 6 SUSE Manager Proxy 4.0 SUSE Manager Retail Branch Server 4.0 SUSE Manager Server 4.0 |
| Patchnames: SUSE-SLE-Module-Basesystem-15-SP1-2020-1124 SUSE-SLE-Module-Server-Applications-15-SP1-2020-1124 |
SUSE Linux Enterprise High Performance Computing 15 SP2 SUSE Linux Enterprise Server 15 SP2 SUSE Linux Enterprise Server for SAP Applications 15 SP2 SUSE Linux Enterprise Storage 7 SUSE Manager Proxy 4.1 SUSE Manager Retail Branch Server 4.1 SUSE Manager Server 4.1 |
| Patchnames: SUSE Linux Enterprise Module for Basesystem 15 SP2 GA xen-libs-4.13.1_02-1.2 SUSE Linux Enterprise Module for Server Applications 15 SP2 GA xen-4.13.1_02-1.2 |
SUSE Linux Enterprise High Performance Computing 15 SP3 SUSE Linux Enterprise Server 15 SP3 SUSE Linux Enterprise Server for SAP Applications 15 SP3 SUSE Linux Enterprise Storage 7.1 SUSE Manager Proxy 4.2 SUSE Manager Retail Branch Server 4.2 SUSE Manager Server 4.2 |
| Patchnames: SUSE Linux Enterprise Module for Basesystem 15 SP3 GA xen-libs-4.14.1_16-1.6 SUSE Linux Enterprise Module for Server Applications 15 SP3 GA xen-4.14.1_16-1.6 |
SUSE Linux Enterprise High Performance Computing 15 SP4 SUSE Linux Enterprise Server 15 SP4 SUSE Linux Enterprise Server for SAP Applications 15 SP4 SUSE Manager Proxy 4.3 SUSE Manager Retail Branch Server 4.3 SUSE Manager Server 4.3 |
| Patchnames: SUSE Linux Enterprise Module for Basesystem 15 SP4 GA xen-libs-4.16.0_08-150400.2.12 SUSE Linux Enterprise Module for Server Applications 15 SP4 GA xen-4.16.0_08-150400.2.12 |
SUSE Linux Enterprise High Performance Computing 15-ESPOS SUSE Linux Enterprise High Performance Computing 15-LTSS |
| Patchnames: SUSE-SLE-Product-HPC-15-2020-1634 |
SUSE Linux Enterprise Module for Server Applications 15 SP1 |
| Patchnames: SUSE-SLE-Module-Server-Applications-15-SP1-2020-1124 |
SUSE Linux Enterprise Module for Server Applications 15 SP2 |
| Patchnames: SUSE Linux Enterprise Module for Server Applications 15 SP2 GA xen-4.13.1_02-1.2 |
SUSE Linux Enterprise Module for Server Applications 15 SP3 |
| Patchnames: SUSE Linux Enterprise Module for Server Applications 15 SP3 GA xen-4.14.1_16-1.6 |
SUSE Linux Enterprise Module for Server Applications 15 SP4 |
| Patchnames: SUSE Linux Enterprise Module for Server Applications 15 SP4 GA xen-4.16.0_08-150400.2.12 |
SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT |
| Patchnames: SUSE-SLE-POS-12-SP2-CLIENT-2020-2234 |
SUSE Linux Enterprise Server 12 SP2-BCL |
| Patchnames: SUSE-SLE-SERVER-12-SP2-BCL-2020-2234 |
SUSE Linux Enterprise Server 12 SP2-ESPOS |
| Patchnames: SUSE-SLE-SERVER-12-SP2-ESPOS-2020-2234 |
SUSE Linux Enterprise Server 12 SP2-LTSS |
| Patchnames: SUSE-SLE-SERVER-12-SP2-2020-2234 |
SUSE Linux Enterprise Server 12 SP3-BCL |
| Patchnames: SUSE-SLE-SERVER-12-SP3-BCL-2020-1630 |
SUSE Linux Enterprise Server 12 SP3-ESPOS |
| Patchnames: SUSE-SLE-SERVER-12-SP3-ESPOS-2020-1630 |
SUSE Linux Enterprise Server 12 SP3-LTSS |
| Patchnames: SUSE-SLE-SERVER-12-SP3-2020-1630 |
SUSE Linux Enterprise Server 12 SP4 SUSE Linux Enterprise Server for SAP Applications 12 SP4 |
| Patchnames: SUSE-SLE-SDK-12-SP4-2020-1138 SUSE-SLE-SERVER-12-SP4-2020-1138 |
SUSE Linux Enterprise Server 12 SP5 SUSE Linux Enterprise Server for SAP Applications 12 SP5 |
| Patchnames: SUSE-SLE-SDK-12-SP5-2020-1139 SUSE-SLE-SERVER-12-SP5-2020-1139 |
SUSE Linux Enterprise Server 15-LTSS |
| Patchnames: SUSE-SLE-Product-SLES-15-2020-1634 |
SUSE Linux Enterprise Server for SAP Applications 12 SP2 |
| Patchnames: SUSE-SLE-SAP-12-SP2-2020-2234 |
SUSE Linux Enterprise Server for SAP Applications 12 SP3 |
| Patchnames: SUSE-SLE-SAP-12-SP3-2020-1630 |
SUSE Linux Enterprise Server for SAP Applications 15 |
| Patchnames: SUSE-SLE-Product-SLES_SAP-15-2020-1634 |
SUSE Linux Enterprise Software Development Kit 12 SP5 |
| Patchnames: SUSE-SLE-SDK-12-SP5-2020-1139 |
SUSE OpenStack Cloud 7 |
| Patchnames: SUSE-OpenStack-Cloud-7-2020-2234 |
SUSE OpenStack Cloud 8 |
| Patchnames: SUSE-OpenStack-Cloud-8-2020-1630 |
SUSE OpenStack Cloud Crowbar 8 |
| Patchnames: SUSE-OpenStack-Cloud-Crowbar-8-2020-1630 |
openSUSE Leap 15.1 |
| Patchnames: openSUSE-2020-599 |
openSUSE Leap 15.2 |
| Patchnames: openSUSE Leap 15.2 GA xen-libs-4.13.1_02-lp152.1.1 |
openSUSE Leap 15.3 |
| Patchnames: openSUSE Leap 15.3 GA xen-libs-4.14.1_16-1.6 |
openSUSE Leap 15.4 |
| Patchnames: openSUSE Leap 15.4 GA xen-libs-4.16.0_08-150400.2.12 |
openSUSE Tumbleweed |
| Patchnames: openSUSE Tumbleweed GA xen-4.15.1_01-1.2 |
First public cloud image revisions this CVE is fixed in:
- alibaba/sles-15-sp3-chost-byos-v20210729
- alibaba/sles-15-sp3-chost-byos-v20210827
- amazon/suse-manager-4-2-proxy-byos-v20210924-hvm-ssd-x86_64
- amazon/suse-manager-4-2-server-byos-v20210924-hvm-ssd-x86_64
- amazon/suse-sles-15-sp3-byos-v20210924-hvm-ssd-x86_64
- amazon/suse-sles-15-sp3-chost-byos-v20210729-hvm-ssd-x86_64
- amazon/suse-sles-15-sp3-chost-byos-v20210827-hvm-ssd-x86_64
- amazon/suse-sles-15-sp3-v20210924-ecs-hvm-ssd-x86_64
- amazon/suse-sles-15-sp3-v20210924-hvm-ssd-x86_64
- amazon/suse-sles-hpc-15-sp3-byos-v20210924-hvm-ssd-x86_64
- amazon/suse-sles-sap-15-sp3-byos-v20210924-hvm-ssd-x86_64
- google/sles-15-sp3-byos-v20210812
- google/sles-15-sp3-chost-byos-v20210729
- google/sles-15-sp3-chost-byos-v20210827
- google/sles-15-sp3-sap-byos-v20210812
- google/sles-15-sp3-sap-v20210812
- google/sles-15-sp3-sapcal-v20210812
- google/sles-15-sp3-v20210812
- google/suse-manager-4-2-proxy-byos-v20210812
- google/suse-manager-4-2-server-byos-v20210812
- microsoft/suse-manager-4-2-proxy-byos-v20210924
- microsoft/suse-manager-4-2-server-byos-v20210924
- microsoft/suse-sles-15-sp3-basic-v20210924
- microsoft/suse-sles-15-sp3-byos-v20210924
- microsoft/suse-sles-15-sp3-chost-byos-v20210729
- microsoft/suse-sles-15-sp3-chost-byos-v20210827
- microsoft/suse-sles-15-sp3-hpc-byos-v20210924
- microsoft/suse-sles-15-sp3-hpc-v20210924
- microsoft/suse-sles-15-sp3-sapcal-v20220120
- microsoft/suse-sles-15-sp3-v20210924
- microsoft/suse-sles-sap-15-sp3-byos-v20210924
- microsoft/suse-sles-sap-15-sp3-v20210924
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.
Product(s) | Source package | State |
---|---|---|
HPE Helion OpenStack 8 | xen | In progress |
SUSE CaaS Platform 3.0 | xen | Not affected |
SUSE CaaS Platform 4.0 | xen | In progress |
SUSE Container as a Service Platform 1.0 | xen | Affected |
SUSE Container as a Service Platform 2.0 | xen | Not affected |
SUSE Enterprise Storage 6 | xen | In progress |
SUSE Linux Enterprise Desktop 12 SP4 | xen | Released |
SUSE Linux Enterprise Desktop 15 SP1 | xen | Released |
SUSE Linux Enterprise Desktop 15 SP2 | xen | Already fixed |
SUSE Linux Enterprise High Performance Computing 12 SP4 | xen | Released |
SUSE Linux Enterprise High Performance Computing 12 SP5 | xen | Released |
SUSE Linux Enterprise High Performance Computing 15 LTSS | xen | Released |
SUSE Linux Enterprise High Performance Computing 15 SP1 | xen | Released |
SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS | xen | In progress |
SUSE Linux Enterprise High Performance Computing 15 SP2 | xen | Already fixed |
SUSE Linux Enterprise Module for Basesystem 15 SP1 | xen | Released |
SUSE Linux Enterprise Module for Basesystem 15 SP2 | xen | Already fixed |
SUSE Linux Enterprise Module for Server Applications 15 SP1 | xen | Released |
SUSE Linux Enterprise Module for Server Applications 15 SP2 | xen | Already fixed |
SUSE Linux Enterprise Point of Service Image Server 12 SP2 | xen | Released |
SUSE Linux Enterprise Server 11 SP4 LTSS | xen | Not affected |
SUSE Linux Enterprise Server 12 SP1 LTSS | xen | Not affected |
SUSE Linux Enterprise Server 12 SP2 BCL | xen | Released |
SUSE Linux Enterprise Server 12 SP2 ESPOS | xen | Released |
SUSE Linux Enterprise Server 12 SP2 LTSS | xen | Released |
SUSE Linux Enterprise Server 12 SP3 BCL | xen | Released |
SUSE Linux Enterprise Server 12 SP3 ESPOS | xen | In progress |
SUSE Linux Enterprise Server 12 SP3 LTSS | xen | Released |
SUSE Linux Enterprise Server 12 SP4 | xen | Released |
SUSE Linux Enterprise Server 12 SP4 ESPOS | xen | In progress |
SUSE Linux Enterprise Server 12 SP4 LTSS | xen | In progress |
SUSE Linux Enterprise Server 12 SP5 | xen | Released |
SUSE Linux Enterprise Server 15 ESPOS | xen | Released |
SUSE Linux Enterprise Server 15 LTSS | xen | In progress |
SUSE Linux Enterprise Server 15 SP1 | xen | Released |
SUSE Linux Enterprise Server 15 SP1 LTSS | xen | In progress |
SUSE Linux Enterprise Server 15 SP2 | xen | Already fixed |
SUSE Linux Enterprise Server Business Critical Linux 15 SP1 | xen | In progress |
SUSE Linux Enterprise Server for SAP Applications 12 SP2 | xen | Released |
SUSE Linux Enterprise Server for SAP Applications 12 SP3 | xen | Released |
SUSE Linux Enterprise Server for SAP Applications 12 SP4 | xen | Released |
SUSE Linux Enterprise Server for SAP Applications 12 SP5 | xen | Released |
SUSE Linux Enterprise Server for SAP Applications 15 | xen | In progress |
SUSE Linux Enterprise Server for SAP Applications 15 SP1 | xen | Released |
SUSE Linux Enterprise Server for SAP Applications 15 SP2 | xen | Already fixed |
SUSE Linux Enterprise Software Development Kit 12 SP4 | xen | Released |
SUSE Linux Enterprise Software Development Kit 12 SP5 | xen | Released |
SUSE Linux Enterprise Storage 6 | xen | Released |
SUSE Linux Enterprise Storage 7 | xen | Already fixed |
SUSE Manager Proxy 4.0 | xen | Released |
SUSE Manager Proxy 4.1 | xen | Already fixed |
SUSE Manager Retail Branch Server 4.0 | xen | Released |
SUSE Manager Retail Branch Server 4.1 | xen | Already fixed |
SUSE Manager Server 4.0 | xen | Released |
SUSE Manager Server 4.1 | xen | Already fixed |
SUSE OpenStack Cloud 7 | xen | Released |
SUSE OpenStack Cloud 8 | xen | In progress |
SUSE OpenStack Cloud 9 | xen | In progress |
SUSE OpenStack Cloud Crowbar 8 | xen | In progress |
SUSE OpenStack Cloud Crowbar 9 | xen | In progress |