CVE-2016-1570: n/a vulnerability

CVE-2016-1570: The PV superpage functionality in arch/x86/mm.c in Xen 3.4.0, 3.4.1, and 4.1.x through 4.6.x allows local P...

The PV superpage functionality in arch/x86/mm.c in Xen 3.4.0, 3.4.1, and 4.1.x through 4.6.x allows local PV guests to obtain sensitive information, cause a denial of service, gain privileges, or have unspecified other impact via a crafted page identifier (MFN) to the (1) MMUEXT_MARK_SUPER or (2) MMUEXT_UNMARK_SUPER sub-op in the HYPERVISOR_mmuext_op hypercall or (3) unknown vectors related to page table updates.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 5, 2024, 23:02 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2016-1570 is a Xen hypervisor flaw affecting PV guest handling of superpage operations. A local paravirtualized guest could potentially read sensitive data, cause denial of service, gain privileges, or trigger other undefined impacts. This matters most for organizations still running older Xen 3.4.x or 4.1 through 4.6 environments. Exposure is likely limited to legacy Xen deployments using affected versions and allowing untrusted or semi-trusted PV guests. Fully patched systems, non-Xen virtualization stacks, or Xen environments outside the cited version range are not shown as affected by the provided sources. Treat this as high priority for any legacy Xen estate, especially shared infrastructure. The risk is not internet-remote, but it affects the isolation boundary between guest and hypervisor, which is core to virtualization security. Mitigation focus: Check Xen advisory XSA-167 and Debian DSA-3519 for applicable vendor updates.; Prioritize patching legacy Xen 3.4.x and 4.1 through 4.6 hosts.; Restrict untrusted PV guest access until vendor guidance is applied..

Prepared: Jun 13, 2026, 21:06 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

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jan 22, 2016, 15:00 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

1Source 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

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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