Scientific Linux: CVE-2012-4398 Moderate: Memory Flaws and Kernel Fix

Date: Tue, 5 Feb 2013 11:02:35 -0600
Reply-To: Pat Riehecky 
Sender: Security Errata for Scientific Linux
 
From: Pat Riehecky 
Organization: Fermilab
Subject: FASTBUGS for SL 5x i386, x86_64 now available
MIME-Version: 1.0

The following FASTBUGS have been uploaded to

i386:
device-mapper-multipath-0.4.7-54.el5_9.1.i386.rpm
dhclient-3.0.5-33.el5_9.i386.rpm
dhcp-3.0.5-33.el5_9.i386.rpm
dhcp-devel-3.0.5-33.el5_9.i386.rpm
kpartx-0.4.7-54.el5_9.1.i386.rpm
libdhcp4client-3.0.5-33.el5_9.i386.rpm
libdhcp4client-devel-3.0.5-33.el5_9.i386.rpm

x86_64:
device-mapper-multipath-0.4.7-54.el5_9.1.x86_64.rpm
dhclient-3.0.5-33.el5_9.x86_64.rpm
dhcp-3.0.5-33.el5_9.x86_64.rpm
dhcp-devel-3.0.5-33.el5_9.i386.rpm
dhcp-devel-3.0.5-33.el5_9.x86_64.rpm
kpartx-0.4.7-54.el5_9.1.x86_64.rpm
libdhcp4client-3.0.5-33.el5_9.i386.rpm
libdhcp4client-3.0.5-33.el5_9.x86_64.rpm
libdhcp4client-devel-3.0.5-33.el5_9.i386.rpm
libdhcp4client-devel-3.0.5-33.el5_9.x86_64.rpm
Date: Wed, 6 Feb 2013 09:14:56 -0600
Reply-To: Pat Riehecky 
Sender: Security Errata for Scientific Linux
 
From: Pat Riehecky 
Organization: Fermilab
Subject: Security ERRATA Moderate: kernel on SL6.x i386/x86_64
MIME-Version: 1.0

Synopsis: Moderate: kernel security and bug fix update
Issue Date: 2013-02-05
CVE Numbers: CVE-2012-4398
 CVE-2012-4461
 CVE-2012-4530
--

This update fixes the following security issues:

* It was found that a deadlock could occur in the Out of Memory (OOM)
killer. A process could trigger this deadlock by consuming a large amount of
memory, and then causing request_module() to be called. A local, unprivileged user could
use this flaw to cause a denial of service (excessive memory consumption).
(CVE-2012-4398, Moderate)

* A flaw was found in the way the KVM (Kernel-based Virtual Machine)
subsystem handled guests attempting to run with the X86_CR4_OSXSAVE CPU feature
flag set. On hosts without the XSAVE CPU feature, a local, unprivileged user could use
this flaw to crash the host system. (The "grep --color xsave /proc/cpuinfo"
command can be used to verify if your system has the XSAVE CPU feature.)
(CVE-2012-4461, Moderate)

* A memory disclosure flaw was found in the way the load_script()
function in the binfmt_script binary format handler handled excessive recursions. A
local, unprivileged user could use this flaw to leak kernel stack memory to
user-space by executing specially-crafted scripts. (CVE-2012-4530, Low)

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

SL6
 x86_64
 kernel-2.6.32-279.22.1.el6.x86_64.rpm
 kernel-debug-2.6.32-279.22.1.el6.x86_64.rpm
 kernel-debug-debuginfo-2.6.32-279.22.1.el6.x86_64.rpm
 kernel-debug-devel-2.6.32-279.22.1.el6.x86_64.rpm
 kernel-debuginfo-2.6.32-279.22.1.el6.x86_64.rpm
 kernel-debuginfo-common-x86_64-2.6.32-279.22.1.el6.x86_64.rpm
 kernel-devel-2.6.32-279.22.1.el6.x86_64.rpm
 kernel-headers-2.6.32-279.22.1.el6.x86_64.rpm
 perf-2.6.32-279.22.1.el6.x86_64.rpm
 perf-debuginfo-2.6.32-279.22.1.el6.x86_64.rpm
 python-perf-debuginfo-2.6.32-279.22.1.el6.x86_64.rpm
 python-perf-2.6.32-279.22.1.el6.x86_64.rpm
 i386
 kernel-2.6.32-279.22.1.el6.i686.rpm
 kernel-debug-2.6.32-279.22.1.el6.i686.rpm
 kernel-debug-debuginfo-2.6.32-279.22.1.el6.i686.rpm
 kernel-debug-devel-2.6.32-279.22.1.el6.i686.rpm
 kernel-debuginfo-2.6.32-279.22.1.el6.i686.rpm
 kernel-debuginfo-common-i686-2.6.32-279.22.1.el6.i686.rpm
 kernel-devel-2.6.32-279.22.1.el6.i686.rpm
 kernel-headers-2.6.32-279.22.1.el6.i686.rpm
 perf-2.6.32-279.22.1.el6.i686.rpm
 perf-debuginfo-2.6.32-279.22.1.el6.i686.rpm
 python-perf-debuginfo-2.6.32-279.22.1.el6.i686.rpm
 python-perf-2.6.32-279.22.1.el6.i686.rpm
 noarch
 kernel-doc-2.6.32-279.22.1.el6.noarch.rpm
 kernel-firmware-2.6.32-279.22.1.el6.noarch.rpm

- Scientific Linux Development Team