Synopsis: Important: kvm security update
Advisory ID: SLSA-2015:0869-1
Issue Date: 2015-04-22
CVE Numbers: CVE-2014-3611
CVE-2014-3610
—
It was found that KVM’s Write to Model Specific Register (WRMSR)
instruction emulation would write non-canonical values passed in by the
guest to certain MSRs in the host’s context. A privileged guest user could
use this flaw to crash the host. (CVE-2014-3610)
A race condition flaw was found in the way the Linux kernel’s KVM
subsystem handled PIT (Programmable Interval Timer) emulation. A guest
user who has access to the PIT I/O ports could use this flaw to crash the
host. (CVE-2014-3611)
Note: The following procedure must be performed before this update will take
effect:
1) Stop all KVM guest virtual machines.
2) Either reboot the hypervisor machine or, as the root user, remove (using
“modprobe -r [module]”) and reload (using “modprobe [module]”) all of the
following modules which are currently running (determined using “lsmod”):
kvm, ksm, kvm-intel or kvm-amd.
3) Restart the KVM guest virtual machines.
or you may restart your system.
—
SL5
x86_64
kmod-kvm-83-270.el5_11.x86_64.rpm
kmod-kvm-debug-83-270.el5_11.x86_64.rpm
kvm-83-270.el5_11.x86_64.rpm
kvm-debuginfo-83-270.el5_11.x86_64.rpm
kvm-qemu-img-83-270.el5_11.x86_64.rpm
kvm-tools-83-270.el5_11.x86_64.rpm
– Scientific Linux Development Team
