What is the severity of CVE-2018-15468?

The severity of CVE-2018-15468 is considered moderate as it involves the potential for system instability and could lead to denial-of-service situations.

How do I fix CVE-2018-15468?

To fix CVE-2018-15468, update the Xen hypervisor to version 4.11.1 or later.

What impact does CVE-2018-15468 have on my system?

CVE-2018-15468 can lead to issues with system stability and may cause the system to lock up under certain conditions.

Is Xen version 4.11.0 vulnerable to CVE-2018-15468?

Yes, Xen version 4.11.0 is vulnerable to CVE-2018-15468 and should be updated to mitigate the risk.

What environments are affected by CVE-2018-15468?

CVE-2018-15468 affects systems running Xen hypervisor versions up to and including 4.11.0.

Vulnerability/
CVE-2018-15468

medium

CWE

863

17/8/2018

5/8/2024

CVE-2018-15468

First published: Fri Aug 17 2018(Updated: )

An issue was discovered in Xen through 4.11.x. The DEBUGCTL MSR contains several debugging features, some of which virtualise cleanly, but some do not. In particular, Branch Trace Store is not virtualised by the processor, and software has to be careful to configure it suitably not to lock up the core. As a result, it must only be available to fully trusted guests. Unfortunately, in the case that vPMU is disabled, all value checking was skipped, allowing the guest to choose any MSR_DEBUGCTL setting it likes. A malicious or buggy guest administrator (on Intel x86 HVM or PVH) can lock up the entire host, causing a Denial of Service.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Xen xen-unstable	<=4.11.0

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2018-15468?
The severity of CVE-2018-15468 is considered moderate as it involves the potential for system instability and could lead to denial-of-service situations.
How do I fix CVE-2018-15468?
To fix CVE-2018-15468, update the Xen hypervisor to version 4.11.1 or later.
What impact does CVE-2018-15468 have on my system?
CVE-2018-15468 can lead to issues with system stability and may cause the system to lock up under certain conditions.
Is Xen version 4.11.0 vulnerable to CVE-2018-15468?
Yes, Xen version 4.11.0 is vulnerable to CVE-2018-15468 and should be updated to mitigate the risk.
What environments are affected by CVE-2018-15468?
CVE-2018-15468 affects systems running Xen hypervisor versions up to and including 4.11.0.

agent/references
agent/softwarecombine
collector/mitre-cve
source/MITRE
agent/author
agent/weakness
agent/last-modified-date
agent/severity
agent/type
agent/description
agent/first-publish-date
agent/event
agent/source
agent/tags
collector/nvd-index
agent/software-canonical-lookup-request
vendor/xen
canonical/xen xen-unstable
version/xen xen-unstable/4.11.0

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