Homepage
About Snyk

Access Restriction Bypass Affecting xen package, versions <4.7.1-r1

Severity

 Recommended
0.0
high
0
10

Snyk's Security Team recommends NVD's CVSS assessment

    Threat Intelligence

    EPSS
    0.06% (28th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk ID SNYK-ALPINE320-XEN-7012613
  • published 23 May 2024
  • disclosed 23 Jan 2017
Report a new vulnerability Found a mistake?

Introduced: 23 Jan 2017

CVE-2016-9386 Open this link in a new tab
CWE-264 Open this link in a new tab

How to fix?

Upgrade Alpine:3.20 xen to version 4.7.1-r1 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:3.20 relevant fixed versions and status.

The x86 emulator in Xen does not properly treat x86 NULL segments as unusable when accessing memory, which might allow local HVM guest users to gain privileges via vectors involving "unexpected" base/limit values.