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Out-of-Bounds Affecting xen package, versions <4.10.0-r1

Severity

 Recommended
0.0
medium
0
10

Snyk's Security Team recommends NVD's CVSS assessment

    Threat Intelligence

    EPSS
    0.06% (27th percentile)

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  • Snyk ID SNYK-ALPINE320-XEN-7012229
  • published 23 May 2024
  • disclosed 5 Jan 2018
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Introduced: 5 Jan 2018

CVE-2018-5244 Open this link in a new tab
CWE-119 Open this link in a new tab

How to fix?

Upgrade Alpine:3.20 xen to version 4.10.0-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.

In Xen 4.10, new infrastructure was introduced as part of an overhaul to how MSR emulation happens for guests. Unfortunately, one tracking structure isn't freed when a vcpu is destroyed. This allows guest OS administrators to cause a denial of service (host OS memory consumption) by rebooting many times.