PT-2012-3819 · Linux+2 · Linux Kernel+2

Petr Matousek · Published 2012-05-17 · Updated 2018-01-05 · CVE-2012-2121

Positive Technologies (AI Summary)

CVSS v2.0

4.9

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 3.3.4

Description The issue is related to the KVM implementation in the Linux kernel, which does not properly manage the relationships between memory slots and the iommu. This allows guest OS users with administrative access to cause a denial of service, resulting in a memory leak and host OS crash, by conducting hotunplug and hotplug operations on devices.

Recommendations For Linux kernel versions prior to 3.3.4, update to version 3.3.4 or later to resolve the issue.

Fix

DoS

Weakness Enumeration

CWE-264

Related Identifiers

CESA-2012_0743

CVE-2012-2121

DSA-2668-1

RHSA-2012:0676

RHSA-2012:0743

RHSA-2012_0676

RHSA-2012_0743

USN-1260-1

USN-1457-1

USN-1470-1

USN-1471-1

USN-1472-1

USN-1473-1

USN-1474-1

USN-1476-1

USN-1577-1

USN-2036-1

USN-2037-1

Affected Products

Centos

Linux Kernel

Red Hat

References · 28

• https://ubuntu.com/security/notices/USN-1474-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1471-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-2036-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2012-2121 · Security Note
• http://rhn.redhat.com/errata/RHSA-2012-0743.html · Vendor Advisory
• http://ubuntu.com/usn/USN-2037-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2012-2121 · Vendor Advisory
• http://ubuntu.com/usn/USN-1577-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1476-1 · Vendor Advisory
• http://ubuntu.com/usn/USN-2036-1 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2012-0743.html · Vendor Advisory
• https://ubuntu.com/security/notices/USN-2037-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2012-2121 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1457-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1577-1 · Vendor Advisory