Improper Access Control Affecting xen package, versions <4.7.0-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.06% (29th percentile)

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  • Snyk IDSNYK-ALPINE316-XEN-2844913
  • published21 Jul 2020
  • disclosed2 Aug 2016

Introduced: 2 Aug 2016

CVE-2016-6258  (opens in a new tab)
CWE-284  (opens in a new tab)

How to fix?

Upgrade Alpine:3.16 xen to version 4.7.0-r0 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:3.16 relevant fixed versions and status.

The PV pagetable code in arch/x86/mm.c in Xen 4.7.x and earlier allows local 32-bit PV guest OS administrators to gain host OS privileges by leveraging fast-paths for updating pagetable entries.