Upstream information

CVE-2020-29567 at MITRE

Description

An issue was discovered in Xen 4.14.x. When moving IRQs between CPUs to distribute the load of IRQ handling, IRQ vectors are dynamically allocated and de-allocated on the relevant CPUs. De-allocation has to happen when certain constraints are met. If these conditions are not met when first checked, the checking CPU may send an interrupt to itself, in the expectation that this IRQ will be delivered only after the condition preventing the cleanup has cleared. For two specific IRQ vectors, this expectation was violated, resulting in a continuous stream of self-interrupts, which renders the CPU effectively unusable. A domain with a passed through PCI device can cause lockup of a physical CPU, resulting in a Denial of Service (DoS) to the entire host. Only x86 systems are vulnerable. Arm systems are not vulnerable. Only guests with physical PCI devices passed through to them can exploit the vulnerability.

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 4.9
Vector AV:L/AC:L/Au:N/C:N/I:N/A:C
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Complete
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 6.2 6.5
Vector CVSS:3.1/AV:L/AC:L/PR:N/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 None 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: 1179513 [RESOLVED / UPSTREAM]

No SUSE Security Announcements cross referenced.

List of released packages

Product(s) Fixed package version(s) References
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 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 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
  • xen-libs >= 4.17.0_06-150500.1.10
  • xen-tools-domU >= 4.17.0_06-150500.1.10
 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
  • xen-libs >= 4.18.2_02-150600.1.12
  • xen-tools-domU >= 4.18.2_02-150600.1.12
 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
  • 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 Micro 5.1
  • xen-libs >= 4.14.2_04-3.9.1
 Patchnames:
SUSE Linux Enterprise Micro 5.1 GA xen-libs-4.14.2_04-3.9.1
SUSE Linux Enterprise Micro 5.2
  • xen-libs >= 4.14.3_06-150300.3.18.2
 Patchnames:
SUSE Linux Enterprise Micro 5.2 GA xen-libs-4.14.3_06-150300.3.18.2
SUSE Linux Enterprise Micro 5.3
  • xen-libs >= 4.16.1_06-150400.4.8.1
 Patchnames:
SUSE Linux Enterprise Micro 5.3 GA xen-libs-4.16.1_06-150400.4.8.1
SUSE Linux Enterprise Micro 5.4
  • xen-libs >= 4.16.3_02-150400.4.19.1
 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 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
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-2024-11520

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. 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 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 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 Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP3 xen Already fixed
SUSE Linux Enterprise Module for Server Applications 15 SP2 xen Not affected
SUSE Linux Enterprise Module for Server Applications 15 SP3 xen Already fixed
SUSE Linux Enterprise Server 12 SP5 xen Not affected
SUSE Linux Enterprise Server 12 SP5-LTSS 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 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 LTSS Extended Security 12 SP5 xen Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP5 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 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 Not affected
SUSE Enterprise Storage 5 xen Unsupported
SUSE Enterprise Storage 6 xen Unsupported
SUSE Enterprise Storage 7 xen Not affected
SUSE Enterprise Storage 7.1 xen Already fixed
SUSE Linux Enterprise Desktop 11 SP3 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 Unsupported
SUSE Linux Enterprise Desktop 15 SP2 xen Not affected
SUSE Linux Enterprise Desktop 15 SP3 xen Already fixed
SUSE Linux Enterprise High Performance Computing 15 xen Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1 xen Unsupported
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-ESPOS xen Not affected
SUSE Linux Enterprise High Performance Computing 15-LTSS 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 Unsupported
SUSE Linux Enterprise Module for Server Applications 15 xen Not affected
SUSE Linux Enterprise Module for Server Applications 15 SP1 xen Unsupported
SUSE Linux Enterprise Point of Sale 11 SP3 xen Not affected
SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT xen Not affected
SUSE Linux Enterprise Point of Service 11 SP3 xen Not affected
SUSE Linux Enterprise Point of Service Image Server 12 SP2 xen Unsupported
SUSE Linux Enterprise Real Time 15 SP2 xen Not affected
SUSE Linux Enterprise Real Time 15 SP3 xen Already fixed
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 Unsupported
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 Unsupported
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 Already fixed
SUSE Linux Enterprise Server 15-LTSS xen Not affected
SUSE Linux Enterprise Server for SAP Applications 11 SP3 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 Unsupported
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 Unsupported
SUSE Linux Enterprise Software Development Kit 11 SP3 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 Linux Enterprise Software Development Kit 12 SP5 xen Not affected
SUSE Manager Proxy 4.0 xen Unsupported
SUSE Manager Proxy 4.1 xen Not affected
SUSE Manager Proxy 4.2 xen Already fixed
SUSE Manager Retail Branch Server 4.0 xen Unsupported
SUSE Manager Retail Branch Server 4.1 xen Not affected
SUSE Manager Retail Branch Server 4.2 xen Already fixed
SUSE Manager Server 4.0 xen Unsupported
SUSE Manager Server 4.1 xen Not affected
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 Dec 2 11:06:09 2020
CVE page last modified: Mon Nov 18 13:59:35 2024