CVE-2020-25604

Upstream information

CVE-2020-25604 at MITRE

Description

An issue was discovered in Xen through 4.14.x. There is a race condition when migrating timers between x86 HVM vCPUs. When migrating timers of x86 HVM guests between its vCPUs, the locking model used allows for a second vCPU of the same guest (also operating on the timers) to release a lock that it didn't acquire. The most likely effect of the issue is a hang or crash of the hypervisor, i.e., a Denial of Service (DoS). All versions of Xen are affected. Only x86 systems are vulnerable. Arm systems are not vulnerable. Only x86 HVM guests can leverage the vulnerability. x86 PV and PVH cannot leverage the vulnerability. Only guests with more than one vCPU 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	1.9
Vector	AV:L/AC:M/Au:N/C:N/I:N/A:P
Access Vector	Local
Access Complexity	Medium
Authentication	None
Confidentiality Impact	None
Integrity Impact	None
Availability Impact	Partial

CVSS v3 Scores
	National Vulnerability Database	SUSE
Base Score	4.7	6.5
Vector	CVSS:3.1/AV:L/AC:H/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
Access Vector	Local	Local
Access Complexity	High	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: 1176343 [NEW]

SUSE Security Advisories:

SUSE-SU-2020:14521-1, published Thu Oct 22 10:16:24 MDT 2020
SUSE-SU-2020:2786-1, published Tue Sep 29 10:17:42 MDT 2020
SUSE-SU-2020:2787-1, published Tue Sep 29 10:24:51 MDT 2020
SUSE-SU-2020:2788-1, published Tue Sep 29 10:31:09 MDT 2020
SUSE-SU-2020:2789-1, published Tue Sep 29 10:15:16 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
SUSE-SU-2020:2822-1, published Thu Oct 1 10:14:48 MDT 2020
openSUSE-SU-2020:1608-1, published Sun, 4 Oct 2020 12:16:57 +0200 (CEST)
unknown, published Tue, 5 Jun 2007 15:21:19 +0200

List of released packages

Product(s)	Fixed package version(s)	References
HPE Helion Openstack 8	`xen >= 4.9.4_12-3.74.1` `xen-doc-html >= 4.9.4_12-3.74.1` `xen-libs >= 4.9.4_12-3.74.1` `xen-libs-32bit >= 4.9.4_12-3.74.1` `xen-tools >= 4.9.4_12-3.74.1` `xen-tools-domU >= 4.9.4_12-3.74.1`	Patchnames: HPE-Helion-OpenStack-8-2020-2787
Image SLES15-EC2-CHOST-HVM-BYOS	`xen-libs >= 4.10.4_16-3.41.1` `xen-tools-domU >= 4.10.4_16-3.41.1`
Image SLES15-SP1-CHOST-BYOS-EC2	`xen-libs >= 4.12.3_08-3.28.1` `xen-tools-domU >= 4.12.3_08-3.28.1`
Image SLES15-SP2-CHOST-BYOS-Ali Image SLES15-SP2-CHOST-BYOS-Azure Image SLES15-SP2-CHOST-BYOS-GCE Image SLES15-SP2-CHOST-BYOS-OpenStack	`xen-libs >= 4.13.1_08-3.10.1`
Image SLES15-SP2-CHOST-BYOS-EC2	`xen-libs >= 4.13.1_08-3.10.1` `xen-tools-domU >= 4.13.1_08-3.10.1`
SUSE Enterprise Storage 5	`xen >= 4.9.4_12-3.74.1` `xen-doc-html >= 4.9.4_12-3.74.1` `xen-libs >= 4.9.4_12-3.74.1` `xen-libs-32bit >= 4.9.4_12-3.74.1` `xen-tools >= 4.9.4_12-3.74.1` `xen-tools-domU >= 4.9.4_12-3.74.1`	Patchnames: SUSE-Storage-5-2020-2787
SUSE Linux Enterprise High Performance Computing 15-ESPOS SUSE Linux Enterprise High Performance Computing 15-LTSS	`xen >= 4.10.4_16-3.41.1` `xen-devel >= 4.10.4_16-3.41.1` `xen-libs >= 4.10.4_16-3.41.1` `xen-tools >= 4.10.4_16-3.41.1` `xen-tools-domU >= 4.10.4_16-3.41.1`	Patchnames: SUSE-SLE-Product-HPC-15-2020-2789
SUSE Linux Enterprise Module for Basesystem 15 SP1	`xen >= 4.12.3_08-3.28.1` `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 Module for Basesystem 15 SP2	`xen >= 4.13.1_08-3.10.1` `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 Module for Open Buildservice Development Tools 15 SP1	`xen >= 4.12.3_08-3.28.1` `xen-devel >= 4.12.3_08-3.28.1` `xen-doc-html >= 4.12.3_08-3.28.1` `xen-libs >= 4.12.3_08-3.28.1` `xen-libs-32bit >= 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-Development-Tools-OBS-15-SP1-2020-2790
SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP2	`xen >= 4.13.1_08-3.10.1` `xen-devel >= 4.13.1_08-3.10.1` `xen-doc-html >= 4.13.1_08-3.10.1` `xen-libs >= 4.13.1_08-3.10.1` `xen-libs-32bit >= 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`	Patchnames: SUSE-SLE-Module-Development-Tools-OBS-15-SP2-2020-2791
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 Point of Sale 12 SP2-CLIENT	`xen >= 4.7.6_10-43.67.1` `xen-doc-html >= 4.7.6_10-43.67.1` `xen-libs >= 4.7.6_10-43.67.1` `xen-libs-32bit >= 4.7.6_10-43.67.1` `xen-tools >= 4.7.6_10-43.67.1` `xen-tools-domU >= 4.7.6_10-43.67.1`	Patchnames: SUSE-SLE-POS-12-SP2-CLIENT-2020-2822
SUSE Linux Enterprise Server 11 SP4-LTSS SUSE Linux Enterprise Server for SAP Applications 11 SP4-LTSS	`xen >= 4.4.4_44-61.55.1` `xen-doc-html >= 4.4.4_44-61.55.1` `xen-kmp-default >= 4.4.4_44_3.0.101_108.117-61.55.1` `xen-kmp-pae >= 4.4.4_44_3.0.101_108.117-61.55.1` `xen-libs >= 4.4.4_44-61.55.1` `xen-libs-32bit >= 4.4.4_44-61.55.1` `xen-tools >= 4.4.4_44-61.55.1` `xen-tools-domU >= 4.4.4_44-61.55.1`	Patchnames: slessp4-xen-14521
SUSE Linux Enterprise Server 12 SP2-BCL SUSE Linux Enterprise Server for SAP Applications 12 SP2-BCL	`xen >= 4.7.6_10-43.67.1` `xen-doc-html >= 4.7.6_10-43.67.1` `xen-libs >= 4.7.6_10-43.67.1` `xen-libs-32bit >= 4.7.6_10-43.67.1` `xen-tools >= 4.7.6_10-43.67.1` `xen-tools-domU >= 4.7.6_10-43.67.1`	Patchnames: SUSE-SLE-SERVER-12-SP2-BCL-2020-2822
SUSE Linux Enterprise Server 12 SP2-ESPOS SUSE Linux Enterprise Server for SAP Applications 12 SP2-ESPOS	`xen >= 4.7.6_10-43.67.1` `xen-doc-html >= 4.7.6_10-43.67.1` `xen-libs >= 4.7.6_10-43.67.1` `xen-libs-32bit >= 4.7.6_10-43.67.1` `xen-tools >= 4.7.6_10-43.67.1` `xen-tools-domU >= 4.7.6_10-43.67.1`	Patchnames: SUSE-SLE-SERVER-12-SP2-ESPOS-2020-2822
SUSE Linux Enterprise Server 12 SP2-LTSS SUSE Linux Enterprise Server for SAP Applications 12 SP2-LTSS	`xen >= 4.7.6_10-43.67.1` `xen-doc-html >= 4.7.6_10-43.67.1` `xen-libs >= 4.7.6_10-43.67.1` `xen-libs-32bit >= 4.7.6_10-43.67.1` `xen-tools >= 4.7.6_10-43.67.1` `xen-tools-domU >= 4.7.6_10-43.67.1`	Patchnames: SUSE-SLE-SERVER-12-SP2-2020-2822
SUSE Linux Enterprise Server 12 SP3-BCL SUSE Linux Enterprise Server for SAP Applications 12 SP3-BCL	`xen >= 4.9.4_12-3.74.1` `xen-doc-html >= 4.9.4_12-3.74.1` `xen-libs >= 4.9.4_12-3.74.1` `xen-libs-32bit >= 4.9.4_12-3.74.1` `xen-tools >= 4.9.4_12-3.74.1` `xen-tools-domU >= 4.9.4_12-3.74.1`	Patchnames: SUSE-SLE-SERVER-12-SP3-BCL-2020-2787
SUSE Linux Enterprise Server 12 SP3-ESPOS SUSE Linux Enterprise Server for SAP Applications 12 SP3-ESPOS	`xen >= 4.9.4_12-3.74.1` `xen-doc-html >= 4.9.4_12-3.74.1` `xen-libs >= 4.9.4_12-3.74.1` `xen-libs-32bit >= 4.9.4_12-3.74.1` `xen-tools >= 4.9.4_12-3.74.1` `xen-tools-domU >= 4.9.4_12-3.74.1`	Patchnames: SUSE-SLE-SERVER-12-SP3-ESPOS-2020-2787
SUSE Linux Enterprise Server 12 SP3-LTSS SUSE Linux Enterprise Server for SAP Applications 12 SP3-LTSS	`xen >= 4.9.4_12-3.74.1` `xen-doc-html >= 4.9.4_12-3.74.1` `xen-libs >= 4.9.4_12-3.74.1` `xen-libs-32bit >= 4.9.4_12-3.74.1` `xen-tools >= 4.9.4_12-3.74.1` `xen-tools-domU >= 4.9.4_12-3.74.1`	Patchnames: SUSE-SLE-SERVER-12-SP3-2020-2787
SUSE Linux Enterprise Server 12 SP4-ESPOS SUSE Linux Enterprise Server for SAP Applications 12 SP4-ESPOS	`xen >= 4.11.4_08-2.36.1` `xen-doc-html >= 4.11.4_08-2.36.1` `xen-libs >= 4.11.4_08-2.36.1` `xen-libs-32bit >= 4.11.4_08-2.36.1` `xen-tools >= 4.11.4_08-2.36.1` `xen-tools-domU >= 4.11.4_08-2.36.1`	Patchnames: SUSE-SLE-SERVER-12-SP4-ESPOS-2020-2786
SUSE Linux Enterprise Server 12 SP4-LTSS SUSE Linux Enterprise Server for SAP Applications 12 SP4-LTSS	`xen >= 4.11.4_08-2.36.1` `xen-doc-html >= 4.11.4_08-2.36.1` `xen-libs >= 4.11.4_08-2.36.1` `xen-libs-32bit >= 4.11.4_08-2.36.1` `xen-tools >= 4.11.4_08-2.36.1` `xen-tools-domU >= 4.11.4_08-2.36.1`	Patchnames: SUSE-SLE-SERVER-12-SP4-LTSS-2020-2786
SUSE Linux Enterprise Server 12 SP5 SUSE Linux Enterprise Server for SAP Applications 12 SP5	`xen >= 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-SERVER-12-SP5-2020-2788
SUSE Linux Enterprise Server 15-LTSS	`xen >= 4.10.4_16-3.41.1` `xen-devel >= 4.10.4_16-3.41.1` `xen-libs >= 4.10.4_16-3.41.1` `xen-tools >= 4.10.4_16-3.41.1` `xen-tools-domU >= 4.10.4_16-3.41.1`	Patchnames: SUSE-SLE-Product-SLES-15-2020-2789
SUSE Linux Enterprise Server for SAP Applications 12 SP2	`xen >= 4.7.6_10-43.67.1` `xen-doc-html >= 4.7.6_10-43.67.1` `xen-libs >= 4.7.6_10-43.67.1` `xen-libs-32bit >= 4.7.6_10-43.67.1` `xen-tools >= 4.7.6_10-43.67.1` `xen-tools-domU >= 4.7.6_10-43.67.1`	Patchnames: SUSE-SLE-SAP-12-SP2-2020-2822
SUSE Linux Enterprise Server for SAP Applications 12 SP3	`xen >= 4.9.4_12-3.74.1` `xen-doc-html >= 4.9.4_12-3.74.1` `xen-libs >= 4.9.4_12-3.74.1` `xen-libs-32bit >= 4.9.4_12-3.74.1` `xen-tools >= 4.9.4_12-3.74.1` `xen-tools-domU >= 4.9.4_12-3.74.1`	Patchnames: SUSE-SLE-SAP-12-SP3-2020-2787
SUSE Linux Enterprise Server for SAP Applications 12 SP4	`xen >= 4.11.4_08-2.36.1` `xen-doc-html >= 4.11.4_08-2.36.1` `xen-libs >= 4.11.4_08-2.36.1` `xen-libs-32bit >= 4.11.4_08-2.36.1` `xen-tools >= 4.11.4_08-2.36.1` `xen-tools-domU >= 4.11.4_08-2.36.1`	Patchnames: SUSE-SLE-SAP-12-SP4-2020-2786
SUSE Linux Enterprise Server for SAP Applications 15	`xen >= 4.10.4_16-3.41.1` `xen-devel >= 4.10.4_16-3.41.1` `xen-libs >= 4.10.4_16-3.41.1` `xen-tools >= 4.10.4_16-3.41.1` `xen-tools-domU >= 4.10.4_16-3.41.1`	Patchnames: SUSE-SLE-Product-SLES_SAP-15-2020-2789
SUSE Linux Enterprise Software Development Kit 12 SP5	`xen >= 4.12.3_08-3.24.1` `xen-devel >= 4.12.3_08-3.24.1`	Patchnames: SUSE-SLE-SDK-12-SP5-2020-2788
SUSE OpenStack Cloud 7	`xen >= 4.7.6_10-43.67.1` `xen-doc-html >= 4.7.6_10-43.67.1` `xen-libs >= 4.7.6_10-43.67.1` `xen-libs-32bit >= 4.7.6_10-43.67.1` `xen-tools >= 4.7.6_10-43.67.1` `xen-tools-domU >= 4.7.6_10-43.67.1`	Patchnames: SUSE-OpenStack-Cloud-7-2020-2822
SUSE OpenStack Cloud 8	`xen >= 4.9.4_12-3.74.1` `xen-doc-html >= 4.9.4_12-3.74.1` `xen-libs >= 4.9.4_12-3.74.1` `xen-libs-32bit >= 4.9.4_12-3.74.1` `xen-tools >= 4.9.4_12-3.74.1` `xen-tools-domU >= 4.9.4_12-3.74.1`	Patchnames: SUSE-OpenStack-Cloud-8-2020-2787
SUSE OpenStack Cloud 9	`xen >= 4.11.4_08-2.36.1` `xen-doc-html >= 4.11.4_08-2.36.1` `xen-libs >= 4.11.4_08-2.36.1` `xen-libs-32bit >= 4.11.4_08-2.36.1` `xen-tools >= 4.11.4_08-2.36.1` `xen-tools-domU >= 4.11.4_08-2.36.1`	Patchnames: SUSE-OpenStack-Cloud-9-2020-2786
SUSE OpenStack Cloud Crowbar 8	`xen >= 4.9.4_12-3.74.1` `xen-doc-html >= 4.9.4_12-3.74.1` `xen-libs >= 4.9.4_12-3.74.1` `xen-libs-32bit >= 4.9.4_12-3.74.1` `xen-tools >= 4.9.4_12-3.74.1` `xen-tools-domU >= 4.9.4_12-3.74.1`	Patchnames: SUSE-OpenStack-Cloud-Crowbar-8-2020-2787
SUSE OpenStack Cloud Crowbar 9	`xen >= 4.11.4_08-2.36.1` `xen-doc-html >= 4.11.4_08-2.36.1` `xen-libs >= 4.11.4_08-2.36.1` `xen-libs-32bit >= 4.11.4_08-2.36.1` `xen-tools >= 4.11.4_08-2.36.1` `xen-tools-domU >= 4.11.4_08-2.36.1`	Patchnames: SUSE-OpenStack-Cloud-Crowbar-9-2020-2786
openSUSE Leap 15.2	`xen >= 4.13.1_08-lp152.2.9.1` `xen-debugsource >= 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-libs-32bit-debuginfo >= 4.13.1_08-lp152.2.9.1` `xen-libs-debuginfo >= 4.13.1_08-lp152.2.9.1` `xen-tools >= 4.13.1_08-lp152.2.9.1` `xen-tools-debuginfo >= 4.13.1_08-lp152.2.9.1` `xen-tools-domU >= 4.13.1_08-lp152.2.9.1` `xen-tools-domU-debuginfo >= 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

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
SUSE CaaS Platform 3.0	xen	Affected
SUSE Container as a Service Platform 1.0	xen	Affected
SUSE Container as a Service Platform 2.0	xen	Affected
SUSE Linux Enterprise 15-SP1 Module for Basesystem	xen	Released
SUSE Linux Enterprise 15-SP1 Module for Server Applications	xen	Released
SUSE Linux Enterprise 15-SP2 Module for Basesystem	xen	Released
SUSE Linux Enterprise 15-SP2 Module for Server Applications	xen	Released
SUSE Linux Enterprise High Performance Computing 12 SP4	xen	Affected
SUSE Linux Enterprise High Performance Computing 12 SP5	xen	Released
SUSE Linux Enterprise High Performance Computing 15 LTSS	xen	Affected
SUSE Linux Enterprise Server 11 SP4 LTSS	xen	Affected
SUSE Linux Enterprise Server 12 SP2 BCL	xen	Affected
SUSE Linux Enterprise Server 12 SP2 LTSS	xen	Affected
SUSE Linux Enterprise Server 12 SP3 BCL	xen	Affected
SUSE Linux Enterprise Server 12 SP3 LTSS	xen	Affected
SUSE Linux Enterprise Server 12 SP4 LTSS	xen	Affected
SUSE Linux Enterprise Server 12 SP5	xen	Released
SUSE Linux Enterprise Server ESPOS 15	xen	Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP2	xen	Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP3	xen	Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP4	xen	Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP5	xen	Released
SUSE Linux Enterprise Software Development Kit 12 SP5	xen	Affected