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CentOS Update for kmod-kvm CESA-2012:1235 centos5

Information

Severity

Severity

High

Family

Family

CentOS Local Security Checks

CVSSv2 Base

CVSSv2 Base

7.2

CVSSv2 Vector

CVSSv2 Vector

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

Solution Type

Solution Type

Vendor Patch

Created

Created

10 years ago

Modified

Modified

3 years ago

Summary

The remote host is missing an update for the 'kmod-kvm' package(s) announced via the referenced advisory.

Insight

Insight

KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. KVM is a Linux kernel module built for the standard Red Hat Enterprise Linux kernel. A flaw was found in the way QEMU handled VT100 terminal escape sequences when emulating certain character devices. A guest user with privileges to write to a character device that is emulated on the host using a virtual console back-end could use this flaw to crash the qemu-kvm process on the host or, possibly, escalate their privileges on the host. (CVE-2012-3515) This flaw did not affect the default use of KVM. Affected configurations were: * When guests were started from the command line ('/usr/libexec/qemu-kvm'), and without specifying a serial or parallel device that specifically does not use a virtual console (vc) back-end. (Note that Red Hat does not support invoking 'qemu-kvm' from the command line on Red Hat Enterprise Linux 5.) * Guests that were managed via libvirt, such as when using Virtual Machine Manager (virt-manager), but that have a serial or parallel device that uses a virtual console back-end. By default, guests managed via libvirt will not use a virtual console back-end for such devices. Red Hat would like to thank the Xen project for reporting this issue. All KVM users should upgrade to these updated packages, which correct this issue. Note: The procedure in the Solution section must be performed before this update will take effect.

Affected Software

Affected Software

kmod-kvm on CentOS 5

Solution

Solution

Please install the updated packages.

Common Vulnerabilities and Exposures (CVE)