CVE-2017-10920

Critical

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.

SeverityCritical

CVSS10.0

Exploit probability—

ProductXen

PublishedJul 5, 2017

First seenJul 5, 2017

How to fix

Vendor advisories

security.gentoo.org/glsa/201708-03
security.gentoo.org/glsa/201710-17

Affected products

Product	Affected versions	Fixed in
xen xen	v ≤ 4.8.1	—

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