CVE-2015-2756

Debian Linux - Access Control

Title source: rule
STIX 2.1

Description

QEMU, as used in Xen 3.3.x through 4.5.x, does not properly restrict access 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.

References (13)

Core 13
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/72577
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201504-04
Vendor Advisory x_refsource_confirm
https://support.citrix.com/article/CTX206006
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2015/dsa-3259
Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora
http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155198.html
Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora
http://lists.fedoraproject.org/pipermail/package-announce/2015-April/154574.html
Vendor Advisory x_refsource_confirm
http://support.citrix.com/article/CTX201145
Various Sources mailing-list x_refsource_mlist
http://lists.nongnu.org/archive/html/qemu-devel/2015-03/msg06179.html
Vendor Advisory x_refsource_confirm
http://xenbits.xen.org/xsa/advisory-126.html
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2608-1
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1031998
Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora
http://lists.fedoraproject.org/pipermail/package-announce/2015-April/154579.html

Scores

EPSS 0.0012
EPSS Percentile 30.3%

Details

CWE
CWE-264
Status published
Products (14)
canonical/ubuntu_linux 12.04
canonical/ubuntu_linux 14.04
canonical/ubuntu_linux 14.10
canonical/ubuntu_linux 15.04
debian/debian_linux 7.0
debian/debian_linux 8.0
fedoraproject/fedora 20
fedoraproject/fedora 21
xen/xen 4.3.0
xen/xen 4.3.1
... and 4 more
Published Apr 01, 2015
Tracked Since Feb 18, 2026