CVE-2018-7542: Debian Linux

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Debian Debian Linux: version 9.0 only
• Xen Xen: from 4.8.0, up to and including 4.10.0

Published 2018-02-27. Last modified 2026-06-17.