CVE-2017-10921
Publication date 5 July 2017
Last updated 25 August 2025
Ubuntu priority
Description
The grant-table feature in Xen through 4.8.x does not ensure sufficient type counts for a GNTMAP_device_map and GNTMAP_host_map mapping, 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 2.
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
| Parameter | Value |
|---|---|
| Base score |
10.0 · Critical
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Changed |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |