What is the severity of CVE-2018-7542?

CVE-2018-7542 has a severity rating that indicates it can lead to a denial of service due to a null pointer dereference.

How do I fix CVE-2018-7542?

To fix CVE-2018-7542, upgrade to Xen version 4.11.4+107-gef32c7afa2-1 or later, or any of the other specified secure versions.

Which versions of Xen are affected by CVE-2018-7542?

Xen versions from 4.8.x through 4.10.x are affected by CVE-2018-7542.

What type of systems are vulnerable to CVE-2018-7542?

CVE-2018-7542 affects x86 PVH guest operating systems running on vulnerable Xen hypervisors.

What can happen if CVE-2018-7542 is exploited?

Exploitation of CVE-2018-7542 can result in a hypervisor crash, leading to service disruption.

Vulnerability/
CVE-2018-7542

medium

6.5

CWE

476

27/2/2018

5/8/2024

CVE-2018-7542: Null Pointer Dereference

First published: Tue Feb 27 2018(Updated: )

An issue was discovered in Xen 4.8.x through 4.10.x allowing x86 PVH guest OS users to cause a denial of service (NULL pointer dereference and hypervisor crash) by leveraging the mishandling of configurations that lack a Local APIC.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
debian/xen		4.11.4+107-gef32c7afa2-1 4.14.6-1 4.14.5+94-ge49571868d-1 4.17.1+2-gb773c48e36-1 4.17.2+55-g0b56bed864-1
Xen xen-unstable	>=4.8.0<=4.10.0
Debian GNU/Linux	=9.0

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2018-7542?
CVE-2018-7542 has a severity rating that indicates it can lead to a denial of service due to a null pointer dereference.
How do I fix CVE-2018-7542?
To fix CVE-2018-7542, upgrade to Xen version 4.11.4+107-gef32c7afa2-1 or later, or any of the other specified secure versions.
Which versions of Xen are affected by CVE-2018-7542?
Xen versions from 4.8.x through 4.10.x are affected by CVE-2018-7542.
What type of systems are vulnerable to CVE-2018-7542?
CVE-2018-7542 affects x86 PVH guest operating systems running on vulnerable Xen hypervisors.
What can happen if CVE-2018-7542 is exploited?
Exploitation of CVE-2018-7542 can result in a hypervisor crash, leading to service disruption.

collector/security-tracker-debian
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collector/mitre-cve
source/MITRE
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agent/weakness
agent/last-modified-date
agent/references
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agent/description
agent/first-publish-date
agent/event
agent/source
agent/softwarecombine
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collector/nvd-index
agent/software-canonical-lookup-request
package-manager/debian
vendor/xen
canonical/xen xen-unstable
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version/xen xen-unstable/4.10.0
vendor/debian
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