Date published: 2017-07-04T21:29:00.830-04:00
Date last modified: 2017-11-03T21:29:32.100-04:00
CVSS Score: 10.0
Principal attack vector: NETWORK
Reference URL: http://www.debian.org/security/2017/dsa-3969
Summary: 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.