Vulnerability Monitor

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CVE-2015-8552

The PCI backend driver in Xen, when running on an x86 system and using Linux 3.1.x through 4.3.x as the driver domain, allows local guest administrators to generate a continuous stream of WARN messages and cause a denial of service (disk consumption) by leveraging a system with access to a passed-through MSI or MSI-X capable physical PCI device and XEN_PCI_OP_enable_msi operations, aka "Linux pciback missing sanity checks."

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 4.4, requiring local system access to exploit with relatively low complexity without requiring user interaction . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 5 products from xen, from canonical, from debian and 2 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2016, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2016-04-13T15:59:06.257

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 4.4 (MEDIUM)

CVSSv2 Vector

AV:L/AC:L/Au:S/C:N/I:N/A:P

Access Vector: LOCAL
Access Complexity: LOW
Authentication: SINGLE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

3.1

Impact Score

2.9

Weaknesses

Type: Primary
CWE-20

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	xen	xen	3.1.3	Yes
Operating System	xen	xen	3.1.4	Yes
Operating System	xen	xen	3.2.0	Yes
Operating System	xen	xen	3.2.1	Yes
Operating System	xen	xen	3.2.2	Yes
Operating System	xen	xen	3.2.3	Yes
Operating System	xen	xen	3.3.0	Yes
Operating System	xen	xen	3.3.1	Yes
Operating System	xen	xen	3.3.2	Yes
Operating System	xen	xen	3.4.0	Yes
Operating System	xen	xen	3.4.1	Yes
Operating System	xen	xen	3.4.2	Yes
Operating System	xen	xen	3.4.3	Yes
Operating System	xen	xen	3.4.4	Yes
Operating System	xen	xen	4.0.0	Yes
Operating System	xen	xen	4.0.1	Yes
Operating System	xen	xen	4.0.2	Yes
Operating System	xen	xen	4.0.3	Yes
Operating System	xen	xen	4.0.4	Yes
Operating System	xen	xen	4.1.0	Yes
Operating System	xen	xen	4.1.1	Yes
Operating System	xen	xen	4.1.2	Yes
Operating System	xen	xen	4.1.3	Yes
Operating System	xen	xen	4.1.4	Yes
Operating System	xen	xen	4.1.5	Yes
Operating System	xen	xen	4.1.6	Yes
Operating System	xen	xen	4.1.6.1	Yes
Operating System	xen	xen	4.2.0	Yes
Operating System	xen	xen	4.2.1	Yes
Operating System	xen	xen	4.2.2	Yes
Operating System	xen	xen	4.2.3	Yes
Operating System	xen	xen	4.2.4	Yes
Operating System	xen	xen	4.2.5	Yes
Operating System	xen	xen	4.3.0	Yes
Operating System	xen	xen	4.3.1	Yes
Operating System	xen	xen	4.3.2	Yes
Operating System	xen	xen	4.3.3	Yes
Operating System	xen	xen	4.3.4	Yes
Operating System	canonical	ubuntu_linux	12.04	Yes
Operating System	debian	debian_linux	6.0	Yes
Operating System	novell	suse_linux_enterprise_debuginfo	11	Yes
Operating System	novell	suse_linux_enterprise_real_time_extension	11	Yes
Operating System	novell	suse_linux_enterprise_real_time_extension	12	Yes

References

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00059.html Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00044.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00055.html ([email protected])
http://www.debian.org/security/2016/dsa-3434 ([email protected])
http://www.securityfocus.com/bid/79546 Third Party Advisory, VDB Entry ([email protected])
http://www.securitytracker.com/id/1034480 Third Party Advisory, VDB Entry ([email protected])
http://xenbits.xen.org/xsa/advisory-157.html Vendor Advisory ([email protected])
https://security.gentoo.org/glsa/201604-03 ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00059.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00044.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00055.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2016/dsa-3434 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/79546 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1034480 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://xenbits.xen.org/xsa/advisory-157.html Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/201604-03 (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For xen's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.