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[RHSA-2011:0303-01] Moderate: kernel security and bug fix update



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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Moderate: kernel security and bug fix update
Advisory ID:       RHSA-2011:0303-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2011-0303.html
Issue date:        2011-03-01
CVE Names:         CVE-2010-4249 CVE-2010-4251 CVE-2010-4655 
=====================================================================

1. Summary:

Updated kernel packages that fix three 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 flaw was found in the Linux kernel's garbage collector for AF_UNIX
sockets. A local, unprivileged user could use this flaw to trigger a
denial of service (out-of-memory condition). (CVE-2010-4249, Moderate)

* A flaw was found in the Linux kernel's networking subsystem. If the
number of packets received exceeded the receiver's buffer limit, they were
queued in a backlog, consuming memory, instead of being discarded. A remote
attacker could abuse this flaw to cause a denial of service (out-of-memory
condition). (CVE-2010-4251, Moderate)

* A missing initialization flaw was found in the ethtool_get_regs()
function in the Linux kernel's ethtool IOCTL handler. A local user who has
the CAP_NET_ADMIN capability could use this flaw to cause an information
leak. (CVE-2010-4655, Low)

Red Hat would like to thank Vegard Nossum for reporting CVE-2010-4249, and
Kees Cook for reporting CVE-2010-4655.

This update also fixes several bugs. Documentation for these bug fixes will
be available shortly from the Technical Notes document linked to in the
References section.

Users should upgrade to these updated packages, which contain backported
patches to correct these issues, and fix the bugs noted in the Technical
Notes. 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/kb/docs/DOC-11259

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/):

656756 - CVE-2010-4249 kernel: unix socket local dos
657303 - CVE-2010-4251 kernel: multicast IPv4 traffic on hipersockets device DoS
668976 - a test unit ready causes a panic on 5.6 (CCISS driver) [rhel-5.6.z]
669300 - Fix shrinking windows with window scaling [rhel-5.6.z]
670797 - panic in kfree() due to race condition in acpi_bus_receive_event() [rhel-5.6.z]
670807 - e1000 driver tracebacks when running under VMware ESX4 [rhel-5.6.z]
672428 - CVE-2010-4655 kernel: heap contents leak for CAP_NET_ADMIN via ethtool ioctl
673983 - virtio_console driver never returns from selecting for write when the queue is full [rhel-5.6.z]
674273 - Flapping errors (and panic) with bonding and arp_interval while using be2net included in 2.6.18-238 [rhel-5.6.z]
678613 - vdso gettimeofday causes a segmentation fault [rhel-5.6.z]

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-2.6.18-238.5.1.el5.src.rpm

i386:
kernel-2.6.18-238.5.1.el5.i686.rpm
kernel-PAE-2.6.18-238.5.1.el5.i686.rpm
kernel-PAE-debuginfo-2.6.18-238.5.1.el5.i686.rpm
kernel-PAE-devel-2.6.18-238.5.1.el5.i686.rpm
kernel-debug-2.6.18-238.5.1.el5.i686.rpm
kernel-debug-debuginfo-2.6.18-238.5.1.el5.i686.rpm
kernel-debug-devel-2.6.18-238.5.1.el5.i686.rpm
kernel-debuginfo-2.6.18-238.5.1.el5.i686.rpm
kernel-debuginfo-common-2.6.18-238.5.1.el5.i686.rpm
kernel-devel-2.6.18-238.5.1.el5.i686.rpm
kernel-headers-2.6.18-238.5.1.el5.i386.rpm
kernel-xen-2.6.18-238.5.1.el5.i686.rpm
kernel-xen-debuginfo-2.6.18-238.5.1.el5.i686.rpm
kernel-xen-devel-2.6.18-238.5.1.el5.i686.rpm

noarch:
kernel-doc-2.6.18-238.5.1.el5.noarch.rpm

x86_64:
kernel-2.6.18-238.5.1.el5.x86_64.rpm
kernel-debug-2.6.18-238.5.1.el5.x86_64.rpm
kernel-debug-debuginfo-2.6.18-238.5.1.el5.x86_64.rpm
kernel-debug-devel-2.6.18-238.5.1.el5.x86_64.rpm
kernel-debuginfo-2.6.18-238.5.1.el5.x86_64.rpm
kernel-debuginfo-common-2.6.18-238.5.1.el5.x86_64.rpm
kernel-devel-2.6.18-238.5.1.el5.x86_64.rpm
kernel-headers-2.6.18-238.5.1.el5.x86_64.rpm
kernel-xen-2.6.18-238.5.1.el5.x86_64.rpm
kernel-xen-debuginfo-2.6.18-238.5.1.el5.x86_64.rpm
kernel-xen-devel-2.6.18-238.5.1.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-2.6.18-238.5.1.el5.src.rpm

i386:
kernel-2.6.18-238.5.1.el5.i686.rpm
kernel-PAE-2.6.18-238.5.1.el5.i686.rpm
kernel-PAE-debuginfo-2.6.18-238.5.1.el5.i686.rpm
kernel-PAE-devel-2.6.18-238.5.1.el5.i686.rpm
kernel-debug-2.6.18-238.5.1.el5.i686.rpm
kernel-debug-debuginfo-2.6.18-238.5.1.el5.i686.rpm
kernel-debug-devel-2.6.18-238.5.1.el5.i686.rpm
kernel-debuginfo-2.6.18-238.5.1.el5.i686.rpm
kernel-debuginfo-common-2.6.18-238.5.1.el5.i686.rpm
kernel-devel-2.6.18-238.5.1.el5.i686.rpm
kernel-headers-2.6.18-238.5.1.el5.i386.rpm
kernel-xen-2.6.18-238.5.1.el5.i686.rpm
kernel-xen-debuginfo-2.6.18-238.5.1.el5.i686.rpm
kernel-xen-devel-2.6.18-238.5.1.el5.i686.rpm

ia64:
kernel-2.6.18-238.5.1.el5.ia64.rpm
kernel-debug-2.6.18-238.5.1.el5.ia64.rpm
kernel-debug-debuginfo-2.6.18-238.5.1.el5.ia64.rpm
kernel-debug-devel-2.6.18-238.5.1.el5.ia64.rpm
kernel-debuginfo-2.6.18-238.5.1.el5.ia64.rpm
kernel-debuginfo-common-2.6.18-238.5.1.el5.ia64.rpm
kernel-devel-2.6.18-238.5.1.el5.ia64.rpm
kernel-headers-2.6.18-238.5.1.el5.ia64.rpm
kernel-xen-2.6.18-238.5.1.el5.ia64.rpm
kernel-xen-debuginfo-2.6.18-238.5.1.el5.ia64.rpm
kernel-xen-devel-2.6.18-238.5.1.el5.ia64.rpm

noarch:
kernel-doc-2.6.18-238.5.1.el5.noarch.rpm

ppc:
kernel-2.6.18-238.5.1.el5.ppc64.rpm
kernel-debug-2.6.18-238.5.1.el5.ppc64.rpm
kernel-debug-debuginfo-2.6.18-238.5.1.el5.ppc64.rpm
kernel-debug-devel-2.6.18-238.5.1.el5.ppc64.rpm
kernel-debuginfo-2.6.18-238.5.1.el5.ppc64.rpm
kernel-debuginfo-common-2.6.18-238.5.1.el5.ppc64.rpm
kernel-devel-2.6.18-238.5.1.el5.ppc64.rpm
kernel-headers-2.6.18-238.5.1.el5.ppc.rpm
kernel-headers-2.6.18-238.5.1.el5.ppc64.rpm
kernel-kdump-2.6.18-238.5.1.el5.ppc64.rpm
kernel-kdump-debuginfo-2.6.18-238.5.1.el5.ppc64.rpm
kernel-kdump-devel-2.6.18-238.5.1.el5.ppc64.rpm

s390x:
kernel-2.6.18-238.5.1.el5.s390x.rpm
kernel-debug-2.6.18-238.5.1.el5.s390x.rpm
kernel-debug-debuginfo-2.6.18-238.5.1.el5.s390x.rpm
kernel-debug-devel-2.6.18-238.5.1.el5.s390x.rpm
kernel-debuginfo-2.6.18-238.5.1.el5.s390x.rpm
kernel-debuginfo-common-2.6.18-238.5.1.el5.s390x.rpm
kernel-devel-2.6.18-238.5.1.el5.s390x.rpm
kernel-headers-2.6.18-238.5.1.el5.s390x.rpm
kernel-kdump-2.6.18-238.5.1.el5.s390x.rpm
kernel-kdump-debuginfo-2.6.18-238.5.1.el5.s390x.rpm
kernel-kdump-devel-2.6.18-238.5.1.el5.s390x.rpm

x86_64:
kernel-2.6.18-238.5.1.el5.x86_64.rpm
kernel-debug-2.6.18-238.5.1.el5.x86_64.rpm
kernel-debug-debuginfo-2.6.18-238.5.1.el5.x86_64.rpm
kernel-debug-devel-2.6.18-238.5.1.el5.x86_64.rpm
kernel-debuginfo-2.6.18-238.5.1.el5.x86_64.rpm
kernel-debuginfo-common-2.6.18-238.5.1.el5.x86_64.rpm
kernel-devel-2.6.18-238.5.1.el5.x86_64.rpm
kernel-headers-2.6.18-238.5.1.el5.x86_64.rpm
kernel-xen-2.6.18-238.5.1.el5.x86_64.rpm
kernel-xen-debuginfo-2.6.18-238.5.1.el5.x86_64.rpm
kernel-xen-devel-2.6.18-238.5.1.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-2010-4249.html
https://www.redhat.com/security/data/cve/CVE-2010-4251.html
https://www.redhat.com/security/data/cve/CVE-2010-4655.html
https://access.redhat.com/security/updates/classification/#moderate
http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/5.6_Technical_Notes/kernel.html#RHSA-2011-0303

8. Contact:

The Red Hat security contact is <secalert redhat com>.  More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2011 Red Hat, Inc.
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