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CVE-2016-1570

UnknownEPSS 1.15%

Last modified

CVE-2016-1570 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.15% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability
1.15%

62.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
XenXen3.4.0
XenXen3.4.1
XenXen4.1.0
XenXen4.1.1
XenXen4.1.2
XenXen4.1.3
XenXen4.1.4
XenXen4.1.5
XenXen4.1.6
XenXen4.1.6.1
XenXen4.2.0
XenXen4.2.1
XenXen4.2.2
XenXen4.2.3
XenXen4.2.4
XenXen4.2.5
XenXen4.3.0
XenXen4.3.1
XenXen4.3.2
XenXen4.3.3
XenXen4.3.4
XenXen4.4.0
XenXen4.4.1
XenXen4.4.2
XenXen4.4.3
XenXen4.5.0
XenXen4.5.1
XenXen4.5.2
XenXen4.6.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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 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.
How severe is CVE-2016-1570?
Severity scoring for CVE-2016-1570 is pending analysis. The EPSS model estimates a 1.15% probability of exploitation in the next 30 days.
How do I fix CVE-2016-1570?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-1570?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST