CVE-2017-10920
Publication date 5 July 2017
Last updated 25 August 2025
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| xen | ||
| 16.04 LTS xenial |
Fixed 4.6.5-0ubuntu1.2
|
|
| 14.04 LTS trusty |
Fixed 4.4.2-0ubuntu0.14.04.12
|
Severity score breakdown
CVSS version: CVSS v3.0
Base score
10.0 · Critical
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H