CVE-2015-5166

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Summary

CVECVE-2015-5166
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2015-08-12 14:59:25 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionUse-after-free vulnerability in QEMU in Xen 4.5.x and earlier does not completely unplug emulated block devices, which allows local HVM guest users to gain privileges by unplugging a block device twice.

Risk And Classification

Primary CVSS: v2.0 7.2 from [email protected]

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

Problem Types: CWE-264 | n/a

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Fedoraproject Fedora 21 All All All
Operating System Fedoraproject Fedora 22 All All All
Operating System Xen Xen 4.5.1 All All All
Operating System Xen Xen All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Xen CVE-2015-5166 Local Privilege Escalation Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
XSA-139 - Xen Security Advisories af854a3a-2127-422b-91ae-364da2661108 xenbits.xen.org Patch, Vendor Advisory
[SECURITY] Fedora 21 Update: xen-4.4.3-3.fc21 af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
[SECURITY] Fedora 22 Update: xen-4.5.1-8.fc22 af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
[SECURITY] Fedora 23 Update: xen-4.5.1-6.fc23 af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
Xen QEMU Block Unplug Protocol Use-After-Free Lets Local Users on a Guest System Gain Elevated Privileges on the Host System - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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