CVE-2016-1570

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.

Category

8.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.28%
Vendor Advisory debian.org Vendor Advisory xen.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.debian.org/security/2016/dsa-3519 vendor advisory
http://www.securitytracker.com/id/1034744 vdb entry
http://xenbits.xen.org/xsa/advisory-167.html vendor advisory

Frequently Asked Questions

What is the severity of CVE-2016-1570?
CVE-2016-1570 has been scored as a high severity vulnerability.
How to fix CVE-2016-1570?
To fix CVE-2016-1570, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-1570 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2016-1570 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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