Rapid7 Vulnerability & Exploit Database

RHSA-2012:0051: kvm security update

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RHSA-2012:0051: kvm security update

Severity
7
CVSS
(AV:A/AC:M/Au:S/C:C/I:C/A:C)
Published
01/27/2012
Created
07/25/2018
Added
02/02/2012
Modified
07/04/2017

Description

KVM (Kernel-based Virtual Machine) is a full virtualization solution forLinux on AMD64 and Intel 64 systems. KVM is a Linux kernel module built forthe standard Red Hat Enterprise Linux kernel.A heap overflow flaw was found in the way QEMU-KVM emulated the e1000network interface card. A privileged guest user in a virtual machine whosenetwork interface is configured to use the e1000 emulated driver could usethis flaw to crash the host or, possibly, escalate their privileges on thehost. (CVE-2012-0029)A flaw was found in the way the KVM subsystem of a Linux kernel handled PIT(Programmable Interval Timer) IRQs (interrupt requests) when there was novirtual interrupt controller set up. A malicious user in the kvm group onthe host could force this situation to occur, resulting in the hostcrashing. (CVE-2011-4622)Red Hat would like to thank Nicolae Mogoreanu for reporting CVE-2012-0029.All KVM users should upgrade to these updated packages, which containbackported patches to correct these issues. Note: The procedure in theSolution section must be performed before this update will take effect.

Solution(s)

  • redhat-upgrade-kmod-kvm
  • redhat-upgrade-kmod-kvm-debug
  • redhat-upgrade-kvm
  • redhat-upgrade-kvm-qemu-img
  • redhat-upgrade-kvm-tools

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