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CVE-2017-10920

CRITICAL

10.0

CVSS Severity Score

EPSS Score0.0620%

EPSS Percentile17.07th

PublishedJul 5, 2017

Last ModifiedMay 13, 2026

Vulnerability Description

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.

Affected Platforms (CPE)

💻

Xen

Xen

<= 4.8.1

References & Advisories

🔗 http://www.debian.org/security/2017/dsa-3969

🔗 http://www.securitytracker.com/id/1038734

🔗 https://security.gentoo.org/glsa/201708-03

🔗 https://security.gentoo.org/glsa/201710-17

🔗 https://xenbits.xen.org/xsa/advisory-224.html

🔗 http://www.debian.org/security/2017/dsa-3969

🔗 http://www.securitytracker.com/id/1038734

🔗 https://security.gentoo.org/glsa/201708-03

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