CVE-2016-1570

Impact:
Important
Public Date:
2016-01-20
Bugzilla:
1296539: CVE-2016-1570 xen: PV superpage functionality missing sanity checks

The MITRE CVE dictionary describes this issue as:

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.

Find out more about CVE-2016-1570 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v2 metrics

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

Base Score 6
Base Metrics AV:N/AC:M/Au:S/C:P/I:P/A:P
Access Vector Network
Access Complexity Medium
Authentication Single
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 5 xen Not affected

Acknowledgements

Red Hat would like to thank the Xen project for reporting this issue. Upstream acknowledges 360 Marvel Team as the original reporters.

Last Modified

CVE description copyright © 2017, The MITRE Corporation

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