National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2012-2121 Detail

Current Description

The KVM implementation in the Linux kernel before 3.3.4 does not properly manage the relationships between memory slots and the iommu, which allows guest OS users to cause a denial of service (memory leak and host OS crash) by leveraging administrative access to the guest OS to conduct hotunplug and hotplug operations on devices.

Source:  MITRE
View Analysis Description

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 4.9 MEDIUM
Vector: (AV:L/AC:L/Au:N/C:N/I:N/A:C) (V2 legend)
Impact Subscore: 6.9
Exploitability Subscore: 3.9


Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://rhn.redhat.com/errata/RHSA-2012-0676.html
http://rhn.redhat.com/errata/RHSA-2012-0743.html
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.4
http://www.openwall.com/lists/oss-security/2012/04/19/16
http://www.securitytracker.com/id?1027083
http://www.ubuntu.com/usn/USN-1577-1
http://www.ubuntu.com/usn/USN-2036-1
http://www.ubuntu.com/usn/USN-2037-1
https://bugzilla.redhat.com/show_bug.cgi?id=814149
https://github.com/torvalds/linux/commit/09ca8e1173bcb12e2a449698c9ae3b86a8a10195

Technical Details

Vulnerability Type (View All)

  • Permissions, Privileges, and Access Controls (CWE-264)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
3.3.3


Change History

2 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2012-2121
NVD Published Date:
05/17/2012
NVD Last Modified:
01/04/2018