[RHSA-2013:1292-01] Moderate: kernel security and bug fix update

[news 28]

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Red Hat Security Advisory

 

Synopsis: Moderate: kernel security and bug fix update

Advisory ID: RHSA-2013:1292-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2013-1292.html

Issue date: 2013-09-26

CVE Names: CVE-2012-3511 CVE-2013-2141 CVE-2013-4162

=====================================================================

 

1. Summary:

 

Updated kernel packages that fix multiple security issues and several bugs

are now available for Red Hat Enterprise Linux 5.

 

The Red Hat Security Response Team has rated this update as having moderate

security impact. Common Vulnerability Scoring System (CVSS) base scores,

which give detailed severity ratings, are available for each vulnerability

from the CVE links in the References section.

 

2. Relevant releases/architectures:

 

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, noarch, ppc, s390x, x86_64

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, noarch, x86_64

 

3. Description:

 

The kernel packages contain the Linux kernel, the core of any Linux

operating system.

 

This update fixes the following security issues:

 

* A use-after-free flaw was found in the madvise() system call

implementation in the Linux kernel. A local, unprivileged user could use

this flaw to cause a denial of service or, potentially, escalate their

privileges. (CVE-2012-3511, Moderate)

 

* A flaw was found in the way the Linux kernel's TCP/IP protocol suite

implementation handled IPv6 sockets that used the UDP_CORK option. A local,

unprivileged user could use this flaw to cause a denial of service.

(CVE-2013-4162, Moderate)

 

* An information leak flaw in the Linux kernel could allow a local,

unprivileged user to leak kernel memory to user-space. (CVE-2013-2141, Low)

 

Red Hat would like to thank Hannes Frederic Sowa for reporting

CVE-2013-4162.

 

This update also fixes the following bugs:

 

* A bug in the be2net driver prevented communication between NICs using

be2net. This update applies a patch addressing this problem along with

several other upstream patches that fix various other problems. Traffic

between NICs using the be2net driver now proceeds as expected. (BZ#983864)

 

* A recent patch fixing a problem that prevented communication between

NICs using the be2net driver caused the firmware of NICs to become

unresponsive, and thus triggered a kernel panic. The problem was caused by

unnecessary usage of a hardware workaround that allows skipping VLAN tag

insertion. A patch has been applied and the workaround is now used only

when the multi-channel configuration is enabled on the NIC. Note that the

bug only affected the NICs with firmware version 4.2.xxxx. (BZ#999819)

 

* A bug in the autofs4 mount expiration code could cause the autofs4

module to falsely report a busy tree of NFS mounts as "not in use".

Consequently, automount attempted to unmount the tree and failed with

a "failed to umount offset" error, leaving the mount tree to appear as

empty directories. A patch has been applied to remove an incorrectly used

autofs dentry mount check and the aforementioned problem no longer occurs.

(BZ#1001488)

 

* A race condition in the be_open function in the be2net driver could

trigger the BUG_ON() macro, which resulted in a kernel panic. A patch

addressing this problem has been applied and the race condition is now

avoided by enabling polling before enabling interrupts globally. The

kernel no longer panics in this situation. (BZ#1005239)

 

All kernel users are advised to upgrade to these updated packages, which

contain backported patches to correct these issues. The system must be

rebooted for this update to take effect.

 

4. Solution:

 

Before applying this update, make sure all previously released errata

relevant to your system have been applied.

 

This update is available via the Red Hat Network. Details on how to use the

Red Hat Network to apply this update are available at

https://access.redhat.com/site/articles/11258

 

To install kernel packages manually, use "rpm -ivh [package]". Do not use

"rpm -Uvh" as that will remove the running kernel binaries from your

system. You may use "rpm -e" to remove old kernels after determining that

the new kernel functions properly on your system.

 

5. Bugs fixed (http://bugzilla.redhat.com/):

 

849734 - CVE-2012-3511 kernel: mm: use-after-free in madvise_remove()

970873 - CVE-2013-2141 Kernel: signal: information leak in tkill/tgkill

987627 - CVE-2013-4162 Kernel: net: panic while pushing pending data out of a IPv6 socket with UDP_CORK enabled

 

6. Package List:

 

Red Hat Enterprise Linux Desktop (v. 5 client):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/kernel-2.6.18-348.18.1.el5.src.rpm

 

i386:

kernel-2.6.18-348.18.1.el5.i686.rpm

kernel-PAE-2.6.18-348.18.1.el5.i686.rpm

kernel-PAE-debuginfo-2.6.18-348.18.1.el5.i686.rpm

kernel-PAE-devel-2.6.18-348.18.1.el5.i686.rpm

kernel-debug-2.6.18-348.18.1.el5.i686.rpm

kernel-debug-debuginfo-2.6.18-348.18.1.el5.i686.rpm

kernel-debug-devel-2.6.18-348.18.1.el5.i686.rpm

kernel-debuginfo-2.6.18-348.18.1.el5.i686.rpm

kernel-debuginfo-common-2.6.18-348.18.1.el5.i686.rpm

kernel-devel-2.6.18-348.18.1.el5.i686.rpm

kernel-headers-2.6.18-348.18.1.el5.i386.rpm

kernel-xen-2.6.18-348.18.1.el5.i686.rpm

kernel-xen-debuginfo-2.6.18-348.18.1.el5.i686.rpm

kernel-xen-devel-2.6.18-348.18.1.el5.i686.rpm

 

noarch:

kernel-doc-2.6.18-348.18.1.el5.noarch.rpm

 

x86_64:

kernel-2.6.18-348.18.1.el5.x86_64.rpm

kernel-debug-2.6.18-348.18.1.el5.x86_64.rpm

kernel-debug-debuginfo-2.6.18-348.18.1.el5.x86_64.rpm

kernel-debug-devel-2.6.18-348.18.1.el5.x86_64.rpm

kernel-debuginfo-2.6.18-348.18.1.el5.x86_64.rpm

kernel-debuginfo-common-2.6.18-348.18.1.el5.x86_64.rpm

kernel-devel-2.6.18-348.18.1.el5.x86_64.rpm

kernel-headers-2.6.18-348.18.1.el5.x86_64.rpm

kernel-xen-2.6.18-348.18.1.el5.x86_64.rpm

kernel-xen-debuginfo-2.6.18-348.18.1.el5.x86_64.rpm

kernel-xen-devel-2.6.18-348.18.1.el5.x86_64.rpm

 

Red Hat Enterprise Linux (v. 5 server):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/kernel-2.6.18-348.18.1.el5.src.rpm

 

i386:

kernel-2.6.18-348.18.1.el5.i686.rpm

kernel-PAE-2.6.18-348.18.1.el5.i686.rpm

kernel-PAE-debuginfo-2.6.18-348.18.1.el5.i686.rpm

kernel-PAE-devel-2.6.18-348.18.1.el5.i686.rpm

kernel-debug-2.6.18-348.18.1.el5.i686.rpm

kernel-debug-debuginfo-2.6.18-348.18.1.el5.i686.rpm

kernel-debug-devel-2.6.18-348.18.1.el5.i686.rpm

kernel-debuginfo-2.6.18-348.18.1.el5.i686.rpm

kernel-debuginfo-common-2.6.18-348.18.1.el5.i686.rpm

kernel-devel-2.6.18-348.18.1.el5.i686.rpm

kernel-headers-2.6.18-348.18.1.el5.i386.rpm

kernel-xen-2.6.18-348.18.1.el5.i686.rpm

kernel-xen-debuginfo-2.6.18-348.18.1.el5.i686.rpm

kernel-xen-devel-2.6.18-348.18.1.el5.i686.rpm

 

ia64:

kernel-2.6.18-348.18.1.el5.ia64.rpm

kernel-debug-2.6.18-348.18.1.el5.ia64.rpm

kernel-debug-debuginfo-2.6.18-348.18.1.el5.ia64.rpm

kernel-debug-devel-2.6.18-348.18.1.el5.ia64.rpm

kernel-debuginfo-2.6.18-348.18.1.el5.ia64.rpm

kernel-debuginfo-common-2.6.18-348.18.1.el5.ia64.rpm

kernel-devel-2.6.18-348.18.1.el5.ia64.rpm

kernel-headers-2.6.18-348.18.1.el5.ia64.rpm

kernel-xen-2.6.18-348.18.1.el5.ia64.rpm

kernel-xen-debuginfo-2.6.18-348.18.1.el5.ia64.rpm

kernel-xen-devel-2.6.18-348.18.1.el5.ia64.rpm

 

noarch:

kernel-doc-2.6.18-348.18.1.el5.noarch.rpm

 

ppc:

kernel-2.6.18-348.18.1.el5.ppc64.rpm

kernel-debug-2.6.18-348.18.1.el5.ppc64.rpm

kernel-debug-debuginfo-2.6.18-348.18.1.el5.ppc64.rpm

kernel-debug-devel-2.6.18-348.18.1.el5.ppc64.rpm

kernel-debuginfo-2.6.18-348.18.1.el5.ppc64.rpm

kernel-debuginfo-common-2.6.18-348.18.1.el5.ppc64.rpm

kernel-devel-2.6.18-348.18.1.el5.ppc64.rpm

kernel-headers-2.6.18-348.18.1.el5.ppc.rpm

kernel-headers-2.6.18-348.18.1.el5.ppc64.rpm

kernel-kdump-2.6.18-348.18.1.el5.ppc64.rpm

kernel-kdump-debuginfo-2.6.18-348.18.1.el5.ppc64.rpm

kernel-kdump-devel-2.6.18-348.18.1.el5.ppc64.rpm

 

s390x:

kernel-2.6.18-348.18.1.el5.s390x.rpm

kernel-debug-2.6.18-348.18.1.el5.s390x.rpm

kernel-debug-debuginfo-2.6.18-348.18.1.el5.s390x.rpm

kernel-debug-devel-2.6.18-348.18.1.el5.s390x.rpm

kernel-debuginfo-2.6.18-348.18.1.el5.s390x.rpm

kernel-debuginfo-common-2.6.18-348.18.1.el5.s390x.rpm

kernel-devel-2.6.18-348.18.1.el5.s390x.rpm

kernel-headers-2.6.18-348.18.1.el5.s390x.rpm

kernel-kdump-2.6.18-348.18.1.el5.s390x.rpm

kernel-kdump-debuginfo-2.6.18-348.18.1.el5.s390x.rpm

kernel-kdump-devel-2.6.18-348.18.1.el5.s390x.rpm

 

x86_64:

kernel-2.6.18-348.18.1.el5.x86_64.rpm

kernel-debug-2.6.18-348.18.1.el5.x86_64.rpm

kernel-debug-debuginfo-2.6.18-348.18.1.el5.x86_64.rpm

kernel-debug-devel-2.6.18-348.18.1.el5.x86_64.rpm

kernel-debuginfo-2.6.18-348.18.1.el5.x86_64.rpm

kernel-debuginfo-common-2.6.18-348.18.1.el5.x86_64.rpm

kernel-devel-2.6.18-348.18.1.el5.x86_64.rpm

kernel-headers-2.6.18-348.18.1.el5.x86_64.rpm

kernel-xen-2.6.18-348.18.1.el5.x86_64.rpm

kernel-xen-debuginfo-2.6.18-348.18.1.el5.x86_64.rpm

kernel-xen-devel-2.6.18-348.18.1.el5.x86_64.rpm

 

These packages are GPG signed by Red Hat for security. Our key and

details on how to verify the signature are available from

https://access.redhat.com/security/team/key/#package

 

7. References:

 

https://www.redhat.com/security/data/cve/CVE-2012-3511.html

https://www.redhat.com/security/data/cve/CVE-2013-2141.html

https://www.redhat.com/security/data/cve/CVE-2013-4162.html

https://access.redhat.com/security/updates/classification/#moderate

 

8. Contact:

 

The Red Hat security contact is . More contact

details at https://access.redhat.com/security/team/contact/

 

Copyright 2013 Red Hat, Inc.

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