VULNERABILITY INTELLIGENCE
CVE-2017-10921
CVSS score10 CRITICAL
EPSS probability2.55%
CISA KEVNot currently listed
Published2017-07-05
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
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.
Weakness classification
- CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer