CVE-2018-7542

Description

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.

Category

6.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.05%
Vendor Advisory gentoo.org Vendor Advisory debian.org Vendor Advisory xen.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://xenbits.xen.org/xsa/advisory-256.html vendor advisory
https://security.gentoo.org/glsa/201810-06 vendor advisory
http://www.securitytracker.com/id/1040776 vdb entry
https://www.debian.org/security/2018/dsa-4131 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-7542?
CVE-2018-7542 has been scored as a medium severity vulnerability.
How to fix CVE-2018-7542?
To fix CVE-2018-7542, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-7542 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-7542 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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