Upstream information

CVE-2020-25598 at MITRE

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.

CVSS v2 Scores
  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
CVSS v3 Scores
  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
SUSE Bugzilla entry: 1176341 [RESOLVED / FIXED]

SUSE Security Advisories:

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
  • xen-libs >= 4.13.1_08-3.10.1
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
  • xen-libs >= 4.12.3_08-3.24.1
  • xen-tools-domU >= 4.12.3_08-3.24.1
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
  • xen-libs >= 4.12.3_08-3.28.1
  • xen-tools-domU >= 4.12.3_08-3.28.1
Image SLES15-SP2-BYOS-EC2-HVM
Image SLES15-SP2-CAP-Deployment-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-HPC-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
  • xen-libs >= 4.13.1_08-3.10.1
  • xen-tools-domU >= 4.13.1_08-3.10.1
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
  • xen >= 4.12.3_08-3.28.1
  • xen-devel >= 4.12.3_08-3.28.1
  • xen-libs >= 4.12.3_08-3.28.1
  • xen-tools >= 4.12.3_08-3.28.1
  • xen-tools-domU >= 4.12.3_08-3.28.1
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
  • xen >= 4.14.1_16-1.6
  • xen-devel >= 4.14.1_16-1.6
  • xen-libs >= 4.14.1_16-1.6
  • xen-tools >= 4.14.1_16-1.6
  • xen-tools-domU >= 4.14.1_16-1.6
  • xen-tools-xendomains-wait-disk >= 4.14.1_16-1.6
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
  • xen >= 4.13.1_08-3.10.1
  • xen-devel >= 4.13.1_08-3.10.1
  • xen-libs >= 4.13.1_08-3.10.1
  • xen-tools >= 4.13.1_08-3.10.1
  • xen-tools-domU >= 4.13.1_08-3.10.1
  • xen-tools-xendomains-wait-disk >= 4.13.1_08-3.10.1
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
  • xen-libs >= 4.12.3_08-3.28.1
  • xen-tools-domU >= 4.12.3_08-3.28.1
Patchnames:
SUSE-SLE-Module-Basesystem-15-SP1-2020-2790
SUSE Linux Enterprise Desktop 15 SP2
SUSE Linux Enterprise Module for Basesystem 15 SP2
  • xen-libs >= 4.13.1_08-3.10.1
  • xen-tools-domU >= 4.13.1_08-3.10.1
Patchnames:
SUSE-SLE-Module-Basesystem-15-SP2-2020-2791
SUSE Linux Enterprise Desktop 15 SP3
SUSE Linux Enterprise Module for Basesystem 15 SP3
  • xen-libs >= 4.14.1_16-1.6
  • xen-tools-domU >= 4.14.1_16-1.6
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
  • xen-libs >= 4.16.0_08-150400.2.12
  • xen-tools-domU >= 4.16.0_08-150400.2.12
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 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
  • xen >= 4.16.0_08-150400.2.12
  • xen-devel >= 4.16.0_08-150400.2.12
  • xen-libs >= 4.16.0_08-150400.2.12
  • xen-tools >= 4.16.0_08-150400.2.12
  • xen-tools-domU >= 4.16.0_08-150400.2.12
  • xen-tools-xendomains-wait-disk >= 4.16.0_08-150400.2.12
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 Module for Server Applications 15 SP1
  • xen >= 4.12.3_08-3.28.1
  • xen-devel >= 4.12.3_08-3.28.1
  • xen-tools >= 4.12.3_08-3.28.1
Patchnames:
SUSE-SLE-Module-Server-Applications-15-SP1-2020-2790
SUSE Linux Enterprise Module for Server Applications 15 SP2
  • xen >= 4.13.1_08-3.10.1
  • xen-devel >= 4.13.1_08-3.10.1
  • xen-tools >= 4.13.1_08-3.10.1
  • xen-tools-xendomains-wait-disk >= 4.13.1_08-3.10.1
Patchnames:
SUSE-SLE-Module-Server-Applications-15-SP2-2020-2791
SUSE Linux Enterprise Module for Server Applications 15 SP3
  • xen >= 4.14.1_16-1.6
  • xen-devel >= 4.14.1_16-1.6
  • xen-tools >= 4.14.1_16-1.6
  • xen-tools-xendomains-wait-disk >= 4.14.1_16-1.6
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
  • xen >= 4.16.0_08-150400.2.12
  • xen-devel >= 4.16.0_08-150400.2.12
  • xen-tools >= 4.16.0_08-150400.2.12
  • xen-tools-xendomains-wait-disk >= 4.16.0_08-150400.2.12
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
  • xen >= 4.12.3_08-3.24.1
  • xen-devel >= 4.12.3_08-3.24.1
  • xen-doc-html >= 4.12.3_08-3.24.1
  • xen-libs >= 4.12.3_08-3.24.1
  • xen-libs-32bit >= 4.12.3_08-3.24.1
  • xen-tools >= 4.12.3_08-3.24.1
  • xen-tools-domU >= 4.12.3_08-3.24.1
Patchnames:
SUSE-SLE-SDK-12-SP5-2020-2788
SUSE-SLE-SERVER-12-SP5-2020-2788
SUSE Linux Enterprise Software Development Kit 12 SP5
  • xen-devel >= 4.12.3_08-3.24.1
Patchnames:
SUSE-SLE-SDK-12-SP5-2020-2788
openSUSE Leap 15.2
  • xen >= 4.13.1_08-lp152.2.9.1
  • xen-devel >= 4.13.1_08-lp152.2.9.1
  • xen-doc-html >= 4.13.1_08-lp152.2.9.1
  • xen-libs >= 4.13.1_08-lp152.2.9.1
  • xen-libs-32bit >= 4.13.1_08-lp152.2.9.1
  • xen-tools >= 4.13.1_08-lp152.2.9.1
  • xen-tools-domU >= 4.13.1_08-lp152.2.9.1
  • xen-tools-xendomains-wait-disk >= 4.13.1_08-lp152.2.9.1
Patchnames:
openSUSE-2020-1608
openSUSE Leap 15.3
  • xen-libs >= 4.14.1_16-1.6
Patchnames:
openSUSE Leap 15.3 GA xen-libs-4.14.1_16-1.6
openSUSE Leap 15.4
  • xen-libs >= 4.16.0_08-150400.2.12
Patchnames:
openSUSE Leap 15.4 GA xen-libs-4.16.0_08-150400.2.12
openSUSE Tumbleweed
  • xen >= 4.15.1_01-1.2
  • xen-devel >= 4.15.1_01-1.2
  • xen-doc-html >= 4.15.1_01-1.2
  • xen-libs >= 4.15.1_01-1.2
  • xen-libs-32bit >= 4.15.1_01-1.2
  • xen-tools >= 4.15.1_01-1.2
  • xen-tools-domU >= 4.15.1_01-1.2
  • xen-tools-xendomains-wait-disk >= 4.15.1_01-1.2
Patchnames:
openSUSE Tumbleweed GA xen-4.15.1_01-1.2


First public cloud image revisions this CVE is fixed in:


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 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 12 SP5 xen Released
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 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-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 Micro 5.1 xen Already fixed
SUSE Linux Enterprise Micro 5.2 xen Already fixed
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 Basesystem 15 SP2 xen Released
SUSE Linux Enterprise Module for Basesystem 15 SP3 xen Already fixed
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 Module for Server Applications 15 SP2 xen Released
SUSE Linux Enterprise Module for Server Applications 15 SP3 xen Already fixed
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 12 SP5 xen Released
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 xen Released
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 Already fixed
SUSE Linux Enterprise Server 15-ESPOS xen Not affected
SUSE Linux Enterprise Server 15-LTSS xen Not affected
SUSE Linux Enterprise Server Business Critical Linux 15 SP1 xen 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 12 SP5 xen Released
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 Server for SAP Applications 15 SP2 xen Released
SUSE Linux Enterprise Server for SAP Applications 15 SP3 xen Already fixed
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


SUSE Timeline for this CVE

CVE page created: Wed Sep 9 16:55:23 2020
CVE page last modified: Wed Nov 30 23:45:21 2022