Vulnerability Report

CVE-2015-2756

Title: Debian Debian Linux Denial of Service (DoS)

DoS

Proof Of Concept

No public PoC currently indexed for CVE-2015-2756.

CWE Category CWE-264
Published Date Apr 01, 2015
Modified Date Jun 17, 2026
Exploit Status Not Found
Score 4.9 CVSS v2.0
Exploit Probability (EPSS)
0.45%

Vulnerability Summary

CVE-2015-2756: 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.

Impacted Vendors

D
debian 1
U
ubuntu 1
C
canonical 1
R
redhat 1
X
xensource_inc 1
X
xen 1
F
fedoraproject 1

Reference Links

http://lists.fedoraproject.org/pipermail/package-announce/2015-April/154574.html http://lists.fedoraproject.org/pipermail/package-announce/2015-April/154579.html http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155198.html http://lists.nongnu.org/archive/html/qemu-devel/2015-03/msg06179.html http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00014.html http://support.citrix.com/article/CTX201145 http://www.debian.org/security/2015/dsa-3259 http://www.securityfocus.com/bid/72577 http://www.securitytracker.com/id/1031998 http://www.ubuntu.com/usn/USN-2608-1 http://xenbits.xen.org/xsa/advisory-126.html https://security.gentoo.org/glsa/201504-04 https://support.citrix.com/article/CTX206006 http://lists.fedoraproject.org/pipermail/package-announce/2015-April/154574.html http://lists.fedoraproject.org/pipermail/package-announce/2015-April/154579.html http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155198.html http://lists.nongnu.org/archive/html/qemu-devel/2015-03/msg06179.html http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00014.html http://support.citrix.com/article/CTX201145 http://www.debian.org/security/2015/dsa-3259 http://www.securityfocus.com/bid/72577 http://www.securitytracker.com/id/1031998 http://www.ubuntu.com/usn/USN-2608-1 http://xenbits.xen.org/xsa/advisory-126.html https://security.gentoo.org/glsa/201504-04 https://support.citrix.com/article/CTX206006
CVSS v2.0
Source Entity [email protected]
Severity MEDIUM
4.9
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:L/AC:L/Au:N/C:N/I:N/A:C

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2015-2756 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector N/A
Complexity N/A
Privileges N/A
Interaction NONE
CVSS Vector String AV:L/AC:L/Au:N/C:N/I:N/A:C

Affected Stack

No specific products linked.