NULL Pointer Dereference Affecting xen package, versions <4.7.1-r4


0.0
medium

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 0.06% (24th percentile)
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NVD
5.5 medium

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  • Snyk ID SNYK-ALPINE315-XEN-1929445
  • published 21 Jul 2020
  • disclosed 26 Jan 2017

How to fix?

Upgrade Alpine:3.15 xen to version 4.7.1-r4 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 Alpine. See How to fix? for Alpine:3.15 relevant fixed versions and status.

VMFUNC emulation in Xen 4.6.x through 4.8.x on x86 systems using AMD virtualization extensions (aka SVM) allows local HVM guest OS users to cause a denial of service (hypervisor crash) by leveraging a missing NULL pointer check.