Out-of-Bounds Affecting xen package, versions <4.9.0-r0


Severity

Recommended
0.0
critical
0
10

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Threat Intelligence

EPSS
0.68% (80th percentile)

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  • Snyk IDSNYK-ALPINE316-XEN-2845197
  • published21 Jul 2020
  • disclosed5 Jul 2017

Introduced: 5 Jul 2017

CVE-2017-10920  (opens in a new tab)
CWE-119  (opens in a new tab)

How to fix?

Upgrade Alpine:3.16 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:3.16 relevant fixed versions and status.

The grant-table feature in Xen through 4.8.x mishandles a GNTMAP_device_map and GNTMAP_host_map mapping, when followed by only a GNTMAP_host_map unmapping, which allows guest OS users to cause a denial of service (count mismanagement and memory corruption) or obtain privileged host OS access, aka XSA-224 bug 1.