Synopsis:          Important: kernel security and bug fix update
Issue Date:        2013-03-12
CVE Numbers:       CVE-2013-0228
                    CVE-2013-0268
--

This update fixes the following security issues:

* A flaw was found in the way the xen_iret() function in the Linux kernel
used the DS (the CPU's Data Segment) register. A local, unprivileged user
in a 32-bit, para-virtualized Xen hypervisor guest could use this flaw to
crash the guest or, potentially, escalate their privileges.
(CVE-2013-0228, Important)

* A flaw was found in the way file permission checks for the
"/dev/cpu/[x]/msr" files were performed in restricted root environments
(for example, when using a capability-based security model). A local user
with the ability to write to these files could use this flaw to escalate
their privileges to kernel level, for example, by writing to the
SYSENTER_EIP_MSR register. (CVE-2013-0268, Important)

The system must be rebooted for this update to take effect.
--

SL6
   x86_64
     kernel-2.6.32-358.2.1.el6.x86_64.rpm
     kernel-debug-2.6.32-358.2.1.el6.x86_64.rpm
     kernel-debug-debuginfo-2.6.32-358.2.1.el6.x86_64.rpm
     kernel-debug-devel-2.6.32-358.2.1.el6.x86_64.rpm
     kernel-debuginfo-2.6.32-358.2.1.el6.x86_64.rpm
     kernel-debuginfo-common-x86_64-2.6.32-358.2.1.el6.x86_64.rpm
     kernel-devel-2.6.32-358.2.1.el6.x86_64.rpm
     kernel-headers-2.6.32-358.2.1.el6.x86_64.rpm
     perf-2.6.32-358.2.1.el6.x86_64.rpm
     perf-debuginfo-2.6.32-358.2.1.el6.x86_64.rpm
     python-perf-debuginfo-2.6.32-358.2.1.el6.x86_64.rpm
     python-perf-2.6.32-358.2.1.el6.x86_64.rpm
   i386
     kernel-2.6.32-358.2.1.el6.i686.rpm
     kernel-debug-2.6.32-358.2.1.el6.i686.rpm
     kernel-debug-debuginfo-2.6.32-358.2.1.el6.i686.rpm
     kernel-debug-devel-2.6.32-358.2.1.el6.i686.rpm
     kernel-debuginfo-2.6.32-358.2.1.el6.i686.rpm
     kernel-debuginfo-common-i686-2.6.32-358.2.1.el6.i686.rpm
     kernel-devel-2.6.32-358.2.1.el6.i686.rpm
     kernel-headers-2.6.32-358.2.1.el6.i686.rpm
     perf-2.6.32-358.2.1.el6.i686.rpm
     perf-debuginfo-2.6.32-358.2.1.el6.i686.rpm
     python-perf-debuginfo-2.6.32-358.2.1.el6.i686.rpm
     python-perf-2.6.32-358.2.1.el6.i686.rpm
   noarch
     kernel-doc-2.6.32-358.2.1.el6.noarch.rpm
     kernel-firmware-2.6.32-358.2.1.el6.noarch.rpm

- Scientific Linux Development Team