NULL Pointer Dereference Affecting xen package, versions <4.8.3+comet2+shim4.10.0+comet3-1+deb9u5
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published29 Jul 2026
- disclosed27 Feb 2018
Introduced: 27 Feb 2018
CVE-2018-7542 (opens in a new tab)How to fix?
Upgrade Echo:latest xen to version 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream xen package and not the xen package as distributed by Echo.
See How to fix? for Echo:latest relevant fixed versions and status.
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.