CVE-2017-10921: n/a vulnerability

CVE-2017-10921: The grant-table feature in Xen through 4.8.x does not ensure sufficient type counts for a GNTMAP_device_map...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 5, 2024, 17:50 UTC (UTC+00:00)

Security readout for executives and security teams

This is a Xen hypervisor flaw where a guest user may destabilize the host or gain privileged host access. The highest concern is tenant-to-host impact in environments running affected Xen versions. The source bundle does not provide CVSS scoring, but the described outcome is severe. Exposure is likely limited to organizations running Xen hypervisors through 4.8.x or affected downstream distribution packages. Risk is highest where guests are untrusted, multi-tenant, externally administered, or operated by separate business units. Treat this as urgent for Xen-based hosting or shared virtualization. A guest-to-host privilege outcome can cross tenant boundaries and threaten the control plane. If Xen is not used, business exposure is likely low. Mitigation focus: Review Xen XSA-224 and distribution advisories for affected package versions.; Apply vendor or distribution updates for affected Xen hypervisors.; Prioritize multi-tenant and untrusted guest environments first..

Prepared: Jun 13, 2026, 04:25 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jul 5, 2017, 01:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
GLSA-201708-03CVE reference · vendor-advisory, x_refsource_GENTOO
https://xenbits.xen.org/xsa/advisory-224.htmlCVE reference · x_refsource_CONFIRM
GLSA-201710-17CVE reference · vendor-advisory, x_refsource_GENTOO

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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