Upstream information

CVE-2018-5244 at MITRE

Description

In Xen 4.10, new infrastructure was introduced as part of an overhaul to how MSR emulation happens for guests. Unfortunately, one tracking structure isn't freed when a vcpu is destroyed. This allows guest OS administrators to cause a denial of service (host OS memory consumption) by rebooting many times.

SUSE information

Overall state of this security issue: Does not affect SUSE products

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 4
Vector AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Access Vector Local Local
Access Complexity Low Low
Privileges Required Low None
User Interaction None None
Scope Changed Unchanged
Confidentiality Impact None None
Integrity Impact None None
Availability Impact High Low
SUSE Bugzilla entries: 1073961 [RESOLVED / FIXED], 1074966 [RESOLVED / DUPLICATE]

No SUSE Security Announcements cross referenced.

List of released packages

Product(s) Fixed package version(s) References
SUSE Linux Enterprise Module for Basesystem 15
  • xen-libs >= 4.10.1_04-1.4
  • xen-tools-domU >= 4.10.1_04-1.4
Patchnames:
SUSE Linux Enterprise Module for Basesystem 15 GA xen-libs
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
Patchnames:
SUSE Linux Enterprise Module for Server Applications 15 GA xen
openSUSE Leap 15.0
  • xen-libs >= 4.10.0_20-lp150.1.2
Patchnames:
openSUSE Leap 15.0 GA xen-libs


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Please note that this evaluation state might be work in progress, incomplete or outdated.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
CaaS Platform 2.0 xen Not affected
SUSE Linux Enterprise Desktop 12 SP2 xen Unsupported
SUSE Linux Enterprise Desktop 12 SP3 xen Not affected
SUSE Linux Enterprise SDK 11 SP4 xen Not affected
SUSE Linux Enterprise SDK 12 SP2 xen Unsupported
SUSE Linux Enterprise SDK 12 SP3 xen Not affected
SUSE Linux Enterprise Server 11 SP4 xen Not affected
SUSE Linux Enterprise Server 12 SP2 xen Unsupported
SUSE Linux Enterprise Server 12 SP3 xen Not affected