Access Restriction Bypass Affecting kernel-debug-devel package, versions <0:2.6.32-220.23.1.el6


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.06% (29th percentile)

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  • Snyk IDSNYK-RHEL6-KERNELDEBUGDEVEL-1442055
  • published26 Jul 2021
  • disclosed29 Mar 2012

Introduced: 29 Mar 2012

CVE-2012-2121  (opens in a new tab)
CWE-264  (opens in a new tab)

How to fix?

Upgrade RHEL:6 kernel-debug-devel to version 0:2.6.32-220.23.1.el6 or higher.
This issue was patched in RHSA-2012:0743.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-debug-devel package and not the kernel-debug-devel package as distributed by RHEL. See How to fix? for RHEL:6 relevant fixed versions and status.

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.

CVSS Scores

version 3.1