CVE-2015-2756

CVE Details

Release Date:	2015-03-31
Impact:	Moderate	What is this?

Description

QEMU, as used in Xen 3.3.x through 4.5.x, does not properly restrictaccess to PCI command registers, which might allow local HVM guest users to cause a denial of service (non-maskable interrupt and host crash) by disabling the (1) memory or (2) I/O decoding for a PCI Express device and then accessing the device, which triggers an Unsupported Request (UR) response.

See more information about CVE-2015-2756 from MITRE CVE dictionary and NIST NVD

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

CVSS v2 metrics

Base Score:	4.3
Vector String:	AV:A/AC:H/Au:S/C:N/I:N/A:C
Version:	2.0
Attack Vector:	Adjacent Network
Attack Complexity:	High
Authentication:	Single
Confidentiality Impact:	None
Integrity Impact:	None
Availability Impact:	Complete

Errata information

Platform	Errata	Release Date
Oracle VM version 2.2 (xen)	OVMSA-2016-0012	2016-02-12
Oracle VM version 3.2 (xen)	OVMSA-2015-0058	2015-05-14
Oracle VM version 3.3 (xen)	OVMSA-2015-0057	2015-05-14