Race Condition Affecting xen package, versions <4.9.0-r0


Severity

Recommended
0.0
critical
0
10

Snyk's Security Team recommends NVD's CVSS assessment

    Threat Intelligence

    EPSS
    0.74% (82nd percentile)

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  • Snyk ID SNYK-ALPINE320-XEN-7012674
  • published 23 May 2024
  • disclosed 5 Jul 2017

How to fix?

Upgrade Alpine:3.20 xen to version 4.9.0-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:3.20 relevant fixed versions and status.

The shadow-paging feature in Xen through 4.8.x mismanages page references and consequently introduces a race condition, which allows guest OS users to obtain Xen privileges, aka XSA-219.