CVE-2018-7540

Upstream information

CVE-2018-7540 at MITRE

Description

An issue was discovered in Xen through 4.10.x allowing x86 PV guest OS users to cause a denial of service (host OS CPU hang) via non-preemptable L3/L4 pagetable freeing.

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SUSE information

Overall state of this security issue: Running

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	6.5	6.5
Vector	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Access Vector	Local	Local
Access Complexity	Low	Low
Privileges Required	Low	Low
User Interaction	None	None
Scope	Changed	Changed
Confidentiality Impact	None	None
Integrity Impact	None	None
Availability Impact	High	High
CVSSv3 Version	3	3

SUSE Bugzilla entries: 1080635 [RESOLVED / FIXED], 1178658 [RESOLVED / FIXED]

SUSE Security Advisories:

• SUSE-SU-2018:0678-1, published Thu, 15 Mar 2018 00:08:50 +0100 (CET)
• SUSE-SU-2018:0909-1, published Tue, 10 Apr 2018 18:07:40 +0200 (CEST)
• SUSE-SU-2018:1184-1, published Wed, 9 May 2018 21:09:32 +0200 (CEST)
• openSUSE-SU-2018:1274-1, published Sat, 12 May 2018 00:37:01 +0200 (CEST)

List of released packages

Product(s)	Fixed package version(s)	References
SUSE CaaS Platform ALL	xen-libs >= 4.9.2_04-3.29.1 xen-tools-domU >= 4.9.2_04-3.29.1	Patchnames: SUSE-CAASP-ALL-2018-828
SUSE Linux Enterprise Desktop 12 SP2	xen >= 4.7.5_02-43.27.1 xen-libs >= 4.7.5_02-43.27.1 xen-libs-32bit >= 4.7.5_02-43.27.1	Patchnames: SUSE-SLE-DESKTOP-12-SP2-2018-612
SUSE Linux Enterprise Desktop 12 SP3	xen >= 4.9.2_04-3.29.1 xen-libs >= 4.9.2_04-3.29.1 xen-libs-32bit >= 4.9.2_04-3.29.1	Patchnames: SUSE-SLE-DESKTOP-12-SP3-2018-828
SUSE Linux Enterprise Desktop 12 SP4	xen >= 4.11.0_08-1.11 xen-libs >= 4.11.0_08-1.11 xen-libs-32bit >= 4.11.0_08-1.11
SUSE Linux Enterprise High Performance Computing 12 SP5 SUSE Linux Enterprise Server 12 SP5	xen >= 4.12.1_06-1.1 xen-doc-html >= 4.12.1_06-1.1 xen-libs >= 4.12.1_06-1.1 xen-libs-32bit >= 4.12.1_06-1.1 xen-tools >= 4.12.1_06-1.1 xen-tools-domU >= 4.12.1_06-1.1
SUSE Linux Enterprise Module for Basesystem 15 SP1	xen-libs >= 4.12.0_12-1.1 xen-tools-domU >= 4.12.0_12-1.1
SUSE Linux Enterprise Module for Basesystem 15 SP2	xen-libs >= 4.13.1_02-1.2 xen-tools-domU >= 4.13.1_02-1.2
SUSE Linux Enterprise Module for Basesystem 15	xen-libs >= 4.10.1_04-1.4 xen-tools-domU >= 4.10.1_04-1.4
SUSE Linux Enterprise Module for Server Applications 15 SP1	xen >= 4.12.0_12-1.1 xen-devel >= 4.12.0_12-1.1 xen-tools >= 4.12.0_12-1.1
SUSE Linux Enterprise Module for Server Applications 15 SP2	xen >= 4.13.1_02-1.2 xen-devel >= 4.13.1_02-1.2 xen-tools >= 4.13.1_02-1.2 xen-tools-xendomains-wait-disk >= 4.13.1_02-1.2
SUSE Linux Enterprise Module for Server Applications 15	xen >= 4.10.1_04-1.4 xen-devel >= 4.10.1_04-1.4 xen-tools >= 4.10.1_04-1.4
SUSE Linux Enterprise Point of Sale 11 SP3	xen-kmp-default >= 4.2.5_21_3.0.101_0.47.106.14-45.19.1 xen-kmp-pae >= 4.2.5_21_3.0.101_0.47.106.14-45.19.1 xen-libs >= 4.2.5_21-45.19.1 xen-tools-domU >= 4.2.5_21-45.19.1	Patchnames: sleposp3-xen-13511
SUSE Linux Enterprise Server 11 SP3-LTSS SUSE Linux Enterprise Server for SAP Applications 11 SP3-LTSS	xen >= 4.2.5_21-45.19.1 xen-doc-html >= 4.2.5_21-45.19.1 xen-doc-pdf >= 4.2.5_21-45.19.1 xen-kmp-default >= 4.2.5_21_3.0.101_0.47.106.14-45.19.1 xen-kmp-pae >= 4.2.5_21_3.0.101_0.47.106.14-45.19.1 xen-libs >= 4.2.5_21-45.19.1 xen-libs-32bit >= 4.2.5_21-45.19.1 xen-tools >= 4.2.5_21-45.19.1 xen-tools-domU >= 4.2.5_21-45.19.1	Patchnames: slessp3-xen-13511
SUSE Linux Enterprise Server 12 SP2 SUSE Linux Enterprise Server for SAP Applications 12 SP2	xen >= 4.7.5_02-43.27.1 xen-doc-html >= 4.7.5_02-43.27.1 xen-libs >= 4.7.5_02-43.27.1 xen-libs-32bit >= 4.7.5_02-43.27.1 xen-tools >= 4.7.5_02-43.27.1 xen-tools-domU >= 4.7.5_02-43.27.1	Patchnames: SUSE-SLE-SERVER-12-SP2-2018-612
SUSE Linux Enterprise Server 12 SP3 SUSE Linux Enterprise Server for SAP Applications 12 SP3	xen >= 4.9.2_04-3.29.1 xen-doc-html >= 4.9.2_04-3.29.1 xen-libs >= 4.9.2_04-3.29.1 xen-libs-32bit >= 4.9.2_04-3.29.1 xen-tools >= 4.9.2_04-3.29.1 xen-tools-domU >= 4.9.2_04-3.29.1	Patchnames: SUSE-SLE-SERVER-12-SP3-2018-828
SUSE Linux Enterprise Server 12 SP4	xen >= 4.11.0_08-1.11 xen-doc-html >= 4.11.0_08-1.11 xen-libs >= 4.11.0_08-1.11 xen-libs-32bit >= 4.11.0_08-1.11 xen-tools >= 4.11.0_08-1.11 xen-tools-domU >= 4.11.0_08-1.11
SUSE Linux Enterprise Software Development Kit 12 SP2	xen-devel >= 4.7.5_02-43.27.1	Patchnames: SUSE-SLE-SDK-12-SP2-2018-612
SUSE Linux Enterprise Software Development Kit 12 SP3	xen-devel >= 4.9.2_04-3.29.1	Patchnames: SUSE-SLE-SDK-12-SP3-2018-828
SUSE Linux Enterprise Software Development Kit 12 SP4	xen-devel >= 4.11.0_08-1.11
SUSE Linux Enterprise Software Development Kit 12 SP5	xen-devel >= 4.12.1_06-1.1
openSUSE Leap 15.0	xen-libs >= 4.10.0_20-lp150.1.2	Patchnames: openSUSE Leap 15.0 GA xen-libs

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First public cloud image revisions this CVE is fixed in:

• alibaba/sles-15-sp3-chost-byos-v20210729
• amazon/suse-sles-15-sp3-chost-byos-v20210729-hvm-ssd-x86_64
• google/sles-15-sp3-chost-byos-v20210729
• microsoft/suse-sles-15-sp3-chost-byos-v20210729

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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 Container as a Service Platform 2.0	xen	Released
SUSE Linux Enterprise Desktop 12 SP2	xen	Released
SUSE Linux Enterprise Desktop 12 SP3	xen	Released
SUSE Linux Enterprise High Performance Computing 15 LTSS	xen	Already fixed
SUSE Linux Enterprise Point of Service 11 SP3	xen	Released
SUSE Linux Enterprise Server 11 SP3 LTSS	xen	Released
SUSE Linux Enterprise Server 11 SP4	xen	Released
SUSE Linux Enterprise Server 12 LTSS	xen	Released
SUSE Linux Enterprise Server 12 SP1 LTSS	xen	Released
SUSE Linux Enterprise Server 12 SP2	xen	Released
SUSE Linux Enterprise Server 12 SP3	xen	Released
SUSE Linux Enterprise Server 12 SP4 ESPOS	xen	Already fixed
SUSE Linux Enterprise Server 12 SP4 LTSS	xen	Already fixed
SUSE Linux Enterprise Server 15 LTSS	xen	Already fixed
SUSE Linux Enterprise Server ESPOS 15	xen	Already fixed
SUSE Linux Enterprise Server for SAP Applications 12 SP3	xen	Released
SUSE Linux Enterprise Server for SAP Applications 12 SP4	xen	Already fixed
SUSE Linux Enterprise Server for SAP Applications 15	xen	Already fixed
SUSE Linux Enterprise Software Development Kit 11 SP4	xen	Released
SUSE Linux Enterprise Software Development Kit 12	xen	Released
SUSE Linux Enterprise Software Development Kit 12 SP3	xen	Released
SUSE OpenStack Cloud 9	xen	Already fixed
SUSE OpenStack Cloud Crowbar 9	xen	Already fixed