Scientific Linux: SLSA-2015:1925-1 Important: KVM Heap Overflow

Date: Thu, 22 Oct 2015 19:17:37 +0000
Reply-To: scientific-linux-users@
Sender: Security Errata for Scientific Linux
 
From: Pat Riehecky 
Subject: Security ERRATA Important: kvm on SL5.x x86_64
MIME-Version: 1.0
Message-ID: <20151022191737.1966.61959@slpackages.fnal.gov>

Synopsis: Important: kvm security update
Advisory ID: SLSA-2015:1925-1
Issue Date: 2015-10-22
CVE Numbers: CVE-2015-5279
--

A heap buffer overflow flaw was found in the way QEMU's NE2000 NIC
emulation implementation handled certain packets received over the
network. A privileged user inside a guest could use this flaw to crash the
QEMU instance (denial of service) or potentially execute arbitrary code on
the host. (CVE-2015-5279)

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.
--

SL5
 x86_64
 kmod-kvm-83-274.el5_11.x86_64.rpm
 kmod-kvm-debug-83-274.el5_11.x86_64.rpm
 kvm-83-274.el5_11.x86_64.rpm
 kvm-debuginfo-83-274.el5_11.x86_64.rpm
 kvm-qemu-img-83-274.el5_11.x86_64.rpm
 kvm-tools-83-274.el5_11.x86_64.rpm

- Scientific Linux Development Team