Upstream information
Description
An issue was discovered in Xen 4.14.x. There is a missing unlock in the XENMEM_acquire_resource error path. The RCU (Read, Copy, Update) mechanism is a synchronisation primitive. A buggy error path in the XENMEM_acquire_resource exits without releasing an RCU reference, which is conceptually similar to forgetting to unlock a spinlock. A buggy or malicious HVM stubdomain can cause an RCU reference to be leaked. This causes subsequent administration operations, (e.g., CPU offline) to livelock, resulting in a host Denial of Service. The buggy codepath has been present since Xen 4.12. Xen 4.14 and later are vulnerable to the DoS. The side effects are believed to be benign on Xen 4.12 and 4.13, but patches are provided nevertheless. The vulnerability can generally only be exploited by x86 HVM VMs, as these are generally the only type of VM that have a Qemu stubdomain. x86 PV and PVH domains, as well as ARM VMs, typically don't use a stubdomain. Only VMs using HVM stubdomains can exploit the vulnerability. VMs using PV stubdomains, or with emulators running in dom0, cannot exploit the vulnerability.Upstream Security Advisories:
SUSE information
Overall state of this security issue: Resolved
This issue is currently rated as having moderate severity.
National Vulnerability Database | |
---|---|
Base Score | 2.1 |
Vector | AV:L/AC:L/Au:N/C:N/I:N/A:P |
Access Vector | Local |
Access Complexity | Low |
Authentication | None |
Confidentiality Impact | None |
Integrity Impact | None |
Availability Impact | Partial |
National Vulnerability Database | SUSE | |
---|---|---|
Base Score | 5.5 | 6.5 |
Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |
Attack Vector | Local | Local |
Attack Complexity | Low | Low |
Privileges Required | Low | Low |
User Interaction | None | None |
Scope | Unchanged | Changed |
Confidentiality Impact | None | None |
Integrity Impact | None | None |
Availability Impact | High | High |
CVSSv3 Version | 3.1 | 3.1 |
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: 1176341 [RESOLVED / FIXED]SUSE Security Advisories:
- SUSE-IU-2020:108-1, published Mon Oct 19 03:42:32 MDT 2020
- SUSE-IU-2020:109-1, published Mon Oct 19 03:43:21 MDT 2020
- SUSE-IU-2020:110-1, published Mon Oct 19 03:44:12 MDT 2020
- SUSE-IU-2020:112-1, published Fri Dec 11 04:02:23 MST 2020
- SUSE-SU-2020:2788-1, published Tue Sep 29 10:31:09 MDT 2020
- SUSE-SU-2020:2790-1, published Tue Sep 29 10:27:24 MDT 2020
- SUSE-SU-2020:2791-1, published Tue Sep 29 10:21:22 MDT 2020
- openSUSE-SU-2020:1608-1, published Thu Dec 7 12:55:41 2023
List of released packages
Product(s) | Fixed package version(s) | References |
---|---|---|
Container suse/sles/15.2/virt-launcher:0.38.1 Image SLES15-SP2-Azure-Basic Image SLES15-SP2-Azure-Standard Image SLES15-SP2-BYOS-Azure Image SLES15-SP2-BYOS-GCE Image SLES15-SP2-CHOST-BYOS-Aliyun Image SLES15-SP2-CHOST-BYOS-Azure Image SLES15-SP2-CHOST-BYOS-GCE Image SLES15-SP2-GCE Image SLES15-SP2-HPC-Azure Image SLES15-SP2-HPC-BYOS-Azure Image SLES15-SP2-Manager-4-1-Proxy-BYOS-Azure Image SLES15-SP2-Manager-4-1-Proxy-BYOS-GCE Image SLES15-SP2-Manager-4-1-Server-BYOS-Azure Image SLES15-SP2-Manager-4-1-Server-BYOS-GCE Image SLES15-SP2-SAP-Azure Image SLES15-SP2-SAP-Azure-LI-BYOS-Production Image SLES15-SP2-SAP-Azure-VLI-BYOS-Production Image SLES15-SP2-SAP-BYOS-Azure Image SLES15-SP2-SAP-BYOS-GCE Image SLES15-SP2-SAP-GCE |
| |
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-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 |
| |
Image SLES15-SP2-BYOS-EC2-HVM Image SLES15-SP2-CHOST-BYOS-EC2 Image SLES15-SP2-EC2-ECS-HVM Image SLES15-SP2-EC2-HVM Image SLES15-SP2-HPC-BYOS-EC2-HVM Image SLES15-SP2-Manager-4-1-Proxy-BYOS-EC2-HVM Image SLES15-SP2-Manager-4-1-Server-BYOS-EC2-HVM Image SLES15-SP2-SAP-BYOS-EC2-HVM Image SLES15-SP2-SAP-EC2-HVM |
| |
SUSE Enterprise Storage 6 SUSE Linux Enterprise High Performance Computing 15 SP1 SUSE Linux Enterprise Server 15 SP1 SUSE Linux Enterprise Server for SAP Applications 15 SP1 SUSE Manager Proxy 4.0 SUSE Manager Retail Branch Server 4.0 SUSE Manager Server 4.0 |
| Patchnames: SUSE-SLE-Module-Basesystem-15-SP1-2020-2790 SUSE-SLE-Module-Server-Applications-15-SP1-2020-2790 |
SUSE Enterprise Storage 7.1 SUSE Linux Enterprise High Performance Computing 15 SP3 SUSE Linux Enterprise Server 15 SP3 SUSE Linux Enterprise Server for SAP Applications 15 SP3 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 Enterprise Storage 7 SUSE Linux Enterprise High Performance Computing 15 SP2 SUSE Linux Enterprise Server 15 SP2 SUSE Linux Enterprise Server for SAP Applications 15 SP2 SUSE Manager Proxy 4.1 SUSE Manager Retail Branch Server 4.1 SUSE Manager Server 4.1 |
| Patchnames: SUSE-SLE-Module-Basesystem-15-SP2-2020-2791 SUSE-SLE-Module-Server-Applications-15-SP2-2020-2791 |
SUSE Linux Enterprise Desktop 15 SP1 SUSE Linux Enterprise Module for Basesystem 15 SP1 |
| Patchnames: SUSE-SLE-Module-Basesystem-15-SP1-2020-2790 |
SUSE Linux Enterprise Desktop 15 SP2 SUSE Linux Enterprise Module for Basesystem 15 SP2 |
| Patchnames: SUSE-SLE-Module-Basesystem-15-SP2-2020-2791 |
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 Desktop 15 SP5 SUSE Linux Enterprise High Performance Computing 15 SP5 SUSE Linux Enterprise Module for Basesystem 15 SP5 SUSE Linux Enterprise Server 15 SP5 SUSE Linux Enterprise Server for SAP Applications 15 SP5 |
| Patchnames: SUSE Linux Enterprise Module for Basesystem 15 SP5 GA xen-libs-4.17.0_06-150500.1.10 |
SUSE Linux Enterprise Desktop 15 SP6 SUSE Linux Enterprise High Performance Computing 15 SP6 SUSE Linux Enterprise Module for Basesystem 15 SP6 SUSE Linux Enterprise Server 15 SP6 SUSE Linux Enterprise Server for SAP Applications 15 SP6 |
| Patchnames: SUSE Linux Enterprise Module for Basesystem 15 SP6 GA xen-libs-4.18.2_02-150600.1.12 |
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 Micro 5.0 |
| Patchnames: SUSE Linux Enterprise Micro 5.0 GA xen-libs-4.13.2_06-3.22.1 |
SUSE Linux Enterprise Micro 5.1 |
| Patchnames: SUSE Linux Enterprise Micro 5.1 GA xen-libs-4.14.2_04-3.9.1 |
SUSE Linux Enterprise Micro 5.2 |
| Patchnames: SUSE Linux Enterprise Micro 5.2 GA xen-libs-4.14.3_06-150300.3.18.2 |
SUSE Linux Enterprise Micro 5.3 |
| Patchnames: SUSE Linux Enterprise Micro 5.3 GA xen-libs-4.16.1_06-150400.4.8.1 |
SUSE Linux Enterprise Micro 5.4 |
| Patchnames: SUSE Linux Enterprise Micro 5.4 GA xen-libs-4.16.3_02-150400.4.19.1 |
SUSE Linux Enterprise Module for Server Applications 15 SP1 |
| Patchnames: SUSE-SLE-Module-Server-Applications-15-SP1-2020-2790 |
SUSE Linux Enterprise Module for Server Applications 15 SP2 |
| Patchnames: SUSE-SLE-Module-Server-Applications-15-SP2-2020-2791 |
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 Server 12 SP5 SUSE Linux Enterprise Server for SAP Applications 12 SP5 |
| Patchnames: SUSE-SLE-SDK-12-SP5-2020-2788 SUSE-SLE-SERVER-12-SP5-2020-2788 |
SUSE Linux Enterprise Software Development Kit 12 SP5 |
| Patchnames: SUSE-SLE-SDK-12-SP5-2020-2788 |
openSUSE Leap 15.2 |
| Patchnames: openSUSE-2020-1608 |
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-2024-11520 |
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. 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 Micro 5.1 | xen | Already fixed |
SUSE Linux Enterprise Micro 5.2 | xen | Already fixed |
Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
SUSE Linux Enterprise High Performance Computing 12 SP5 | xen | Released |
SUSE Linux Enterprise High Performance Computing 15 SP2 | xen | Released |
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 | Already fixed |
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | xen | Already fixed |
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | xen | Already fixed |
SUSE Linux Enterprise Module for Basesystem 15 SP2 | xen | Released |
SUSE Linux Enterprise Module for Basesystem 15 SP3 | xen | Already fixed |
SUSE Linux Enterprise Module for Server Applications 15 SP2 | xen | Released |
SUSE Linux Enterprise Module for Server Applications 15 SP3 | xen | Already fixed |
SUSE Linux Enterprise Server 12 SP5 | xen | Released |
SUSE Linux Enterprise Server 12 SP5-LTSS | xen | Affected |
SUSE Linux Enterprise Server 15 SP2 | xen | Released |
SUSE Linux Enterprise Server 15 SP2-LTSS | xen | Affected |
SUSE Linux Enterprise Server 15 SP3 | xen | Already fixed |
SUSE Linux Enterprise Server 15 SP3-LTSS | xen | Already fixed |
SUSE Linux Enterprise Server 15-ESPOS | xen | Not affected |
SUSE Linux Enterprise Server Business Critical Linux 15 SP1 | xen | Unsupported |
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | xen | Affected |
SUSE Linux Enterprise Server for SAP Applications 12 SP5 | xen | Released |
SUSE Linux Enterprise Server for SAP Applications 15 SP2 | xen | Released |
SUSE Linux Enterprise Server for SAP Applications 15 SP3 | xen | Already fixed |
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 | Affected |
SUSE Container as a Service Platform 1.0 | xen | Not affected |
SUSE Container as a Service Platform 2.0 | xen | Not affected |
SUSE Enterprise Storage 6 | xen | Released |
SUSE Enterprise Storage 7 | xen | Released |
SUSE Enterprise Storage 7.1 | xen | Already fixed |
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 | Released |
SUSE Linux Enterprise Desktop 15 SP2 | xen | Released |
SUSE Linux Enterprise Desktop 15 SP3 | xen | Already fixed |
SUSE Linux Enterprise High Performance Computing 12 SP4 | xen | Not affected |
SUSE Linux Enterprise High Performance Computing 15 | xen | Not affected |
SUSE Linux Enterprise High Performance Computing 15 SP1 | xen | Released |
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-ESPOS | xen | Not affected |
SUSE Linux Enterprise High Performance Computing 15-LTSS | xen | Not affected |
SUSE Linux Enterprise Micro 5.0 | xen | Affected |
SUSE Linux Enterprise Module for Basesystem 15 | xen | Not affected |
SUSE Linux Enterprise Module for Basesystem 15 SP1 | xen | Released |
SUSE Linux Enterprise Module for Server Applications 15 | xen | Not affected |
SUSE Linux Enterprise Module for Server Applications 15 SP1 | xen | Released |
SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT | xen | Not affected |
SUSE Linux Enterprise Real Time 15 SP2 | xen | Affected |
SUSE Linux Enterprise Real Time 15 SP3 | xen | Already fixed |
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 | Released |
SUSE Linux Enterprise Server 15 SP1-BCL | xen | Affected |
SUSE Linux Enterprise Server 15 SP1-LTSS | xen | Affected |
SUSE Linux Enterprise Server 15 SP2-BCL | xen | Affected |
SUSE Linux Enterprise Server 15 SP3-BCL | xen | Already fixed |
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 Server for SAP Applications 15 | xen | Not affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP1 | xen | Released |
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 Linux Enterprise Software Development Kit 12 SP5 | xen | Released |
SUSE Manager Proxy 4.0 | xen | Released |
SUSE Manager Proxy 4.1 | xen | Released |
SUSE Manager Proxy 4.2 | xen | Already fixed |
SUSE Manager Retail Branch Server 4.0 | xen | Released |
SUSE Manager Retail Branch Server 4.1 | xen | Released |
SUSE Manager Retail Branch Server 4.2 | xen | Already fixed |
SUSE Manager Server 4.0 | xen | Released |
SUSE Manager Server 4.1 | xen | Released |
SUSE Manager Server 4.2 | xen | Already fixed |
SUSE OpenStack Cloud 7 | xen | Not affected |
SUSE OpenStack Cloud 8 | xen | Not affected |
SUSE OpenStack Cloud 9 | xen | Not affected |
SUSE OpenStack Cloud Crowbar 8 | xen | Not affected |
SUSE OpenStack Cloud Crowbar 9 | xen | Not affected |
openSUSE Leap 15.3 | xen | Already fixed |
openSUSE Leap Micro 5.2 | xen | Already fixed |
SUSE Timeline for this CVE
CVE page created: Wed Sep 9 16:55:23 2020CVE page last modified: Mon Nov 18 13:58:56 2024