Vulnerability Monitor

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CVE-2015-7970

The p2m_pod_emergency_sweep function in arch/x86/mm/p2m-pod.c in Xen 3.4.x, 3.5.x, and 3.6.x is not preemptible, which allows local x86 HVM guest administrators to cause a denial of service (CPU consumption and possibly reboot) via crafted memory contents that triggers a "time-consuming linear scan," related to Populate-on-Demand.

Security Impact Summary

CVE-2015-7970 is a security vulnerability that . Impacting 1 product from xen organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2015, 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

2015-10-30T15:59:06.967

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 4.9 (MEDIUM)

CVSSv2 Vector

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

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

Exploitability Score

3.9

Impact Score

6.9

Weaknesses

Type: Primary
CWE-399

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
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

References

http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171185.html ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171249.html ([email protected])
http://lists.opensuse.org/opensuse-updates/2015-12/msg00053.html ([email protected])
http://support.citrix.com/article/CTX202404 ([email protected])
http://www.debian.org/security/2015/dsa-3414 ([email protected])
http://www.securityfocus.com/bid/77362 ([email protected])
http://www.securitytracker.com/id/1034034 ([email protected])
http://xenbits.xen.org/xsa/advisory-150.html Vendor Advisory ([email protected])
https://security.gentoo.org/glsa/201604-03 ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171185.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171249.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-updates/2015-12/msg00053.html (af854a3a-2127-422b-91ae-364da2661108)
http://support.citrix.com/article/CTX202404 (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2015/dsa-3414 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/77362 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1034034 (af854a3a-2127-422b-91ae-364da2661108)
http://xenbits.xen.org/xsa/advisory-150.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.