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Category:   OS (Linux)  >   Linux Kernel Vendors:   kernel.org
(Red Hat Issues Fix) Linux Kernel Input Validation Flaw in Realtek r8169 Ethernet Driver Lets Remote Users Deny Service
SecurityTracker Alert ID:  1023598
SecurityTracker URL:  http://securitytracker.com/id/1023598
CVE Reference:   CVE-2009-4537   (Links to External Site)
Updated:  Feb 18 2010
Original Entry Date:  Feb 16 2010
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): RHEL 4.7.z
Description:   A vulnerability was reported in Linux Kernel. A remote user can cause denial of service conditions.

A remote user can send data with a specially crafted 'RxMaxSize' frame size value to cause the target Realtek r8169 Ethernet driver to crash.

Fabian Yamaguchi reported this vulnerability.
Impact:   A remote user can cause the target system to crash.
Solution:   Red Hat has issued a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2010-0111.html
Vendor URL:  www.kernel.org/ (Links to External Site)
Cause:   Input validation error
Underlying OS:  

Message History:   This archive entry is a follow-up to the message listed below.
Jan 8 2010 Linux Kernel Input Validation Flaw in Realtek r8169 Ethernet Driver Lets Remote Users Deny Service


 Source Message Contents
Date:  Tue, 16 Feb 2010 12:07:42 -0500
Subject:  [RHSA-2010:0111-01] Important: kernel security update

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Hash: SHA1

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

Synopsis:          Important: kernel security update
Advisory ID:       RHSA-2010:0111-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2010-0111.html
Issue date:        2010-02-16
CVE Names:         CVE-2009-4536 CVE-2009-4537 CVE-2009-4538 
=====================================================================

1. Summary:

Updated kernel packages that fix multiple security issues are now available
for Red Hat Enterprise Linux 4.7 Extended Update Support.

This update has been rated as having important security impact by the Red
Hat Security Response Team.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS version 4.7.z - i386, ia64, noarch, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux ES version 4.7.z - i386, ia64, 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 each of the following Intel PRO/1000 Linux drivers in
the Linux kernel: e1000 and e1000e. A remote attacker using packets larger
than the MTU could bypass the existing fragment check, resulting in
partial, invalid frames being passed to the network stack. These flaws
could also possibly be used to trigger a remote denial of service.
(CVE-2009-4536, CVE-2009-4538, Important)

* a flaw was found in the Realtek r8169 Ethernet driver in the Linux
kernel. Receiving overly-long frames with a certain revision of the network
cards supported by this driver could possibly result in a remote denial of
service. (CVE-2009-4537, Important)

Users should 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 that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network.  Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

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

550907 - CVE-2009-4537 kernel: r8169 issue reported at 26c3
551214 - CVE-2009-4538 kernel: e1000e frame fragment issue
552126 - CVE-2009-4536 kernel: e1000 issue reported at 26c3

6. Package List:

Red Hat Enterprise Linux AS version 4.7.z:

Source:
kernel-2.6.9-78.0.29.EL.src.rpm

i386:
kernel-2.6.9-78.0.29.EL.i686.rpm
kernel-debuginfo-2.6.9-78.0.29.EL.i686.rpm
kernel-devel-2.6.9-78.0.29.EL.i686.rpm
kernel-hugemem-2.6.9-78.0.29.EL.i686.rpm
kernel-hugemem-devel-2.6.9-78.0.29.EL.i686.rpm
kernel-smp-2.6.9-78.0.29.EL.i686.rpm
kernel-smp-devel-2.6.9-78.0.29.EL.i686.rpm
kernel-xenU-2.6.9-78.0.29.EL.i686.rpm
kernel-xenU-devel-2.6.9-78.0.29.EL.i686.rpm

ia64:
kernel-2.6.9-78.0.29.EL.ia64.rpm
kernel-debuginfo-2.6.9-78.0.29.EL.ia64.rpm
kernel-devel-2.6.9-78.0.29.EL.ia64.rpm
kernel-largesmp-2.6.9-78.0.29.EL.ia64.rpm
kernel-largesmp-devel-2.6.9-78.0.29.EL.ia64.rpm

noarch:
kernel-doc-2.6.9-78.0.29.EL.noarch.rpm

ppc:
kernel-2.6.9-78.0.29.EL.ppc64.rpm
kernel-2.6.9-78.0.29.EL.ppc64iseries.rpm
kernel-debuginfo-2.6.9-78.0.29.EL.ppc64.rpm
kernel-debuginfo-2.6.9-78.0.29.EL.ppc64iseries.rpm
kernel-devel-2.6.9-78.0.29.EL.ppc64.rpm
kernel-devel-2.6.9-78.0.29.EL.ppc64iseries.rpm
kernel-largesmp-2.6.9-78.0.29.EL.ppc64.rpm
kernel-largesmp-devel-2.6.9-78.0.29.EL.ppc64.rpm

s390:
kernel-2.6.9-78.0.29.EL.s390.rpm
kernel-debuginfo-2.6.9-78.0.29.EL.s390.rpm
kernel-devel-2.6.9-78.0.29.EL.s390.rpm

s390x:
kernel-2.6.9-78.0.29.EL.s390x.rpm
kernel-debuginfo-2.6.9-78.0.29.EL.s390x.rpm
kernel-devel-2.6.9-78.0.29.EL.s390x.rpm

x86_64:
kernel-2.6.9-78.0.29.EL.x86_64.rpm
kernel-debuginfo-2.6.9-78.0.29.EL.x86_64.rpm
kernel-devel-2.6.9-78.0.29.EL.x86_64.rpm
kernel-largesmp-2.6.9-78.0.29.EL.x86_64.rpm
kernel-largesmp-devel-2.6.9-78.0.29.EL.x86_64.rpm
kernel-smp-2.6.9-78.0.29.EL.x86_64.rpm
kernel-smp-devel-2.6.9-78.0.29.EL.x86_64.rpm
kernel-xenU-2.6.9-78.0.29.EL.x86_64.rpm
kernel-xenU-devel-2.6.9-78.0.29.EL.x86_64.rpm

Red Hat Enterprise Linux ES version 4.7.z:

Source:
kernel-2.6.9-78.0.29.EL.src.rpm

i386:
kernel-2.6.9-78.0.29.EL.i686.rpm
kernel-debuginfo-2.6.9-78.0.29.EL.i686.rpm
kernel-devel-2.6.9-78.0.29.EL.i686.rpm
kernel-hugemem-2.6.9-78.0.29.EL.i686.rpm
kernel-hugemem-devel-2.6.9-78.0.29.EL.i686.rpm
kernel-smp-2.6.9-78.0.29.EL.i686.rpm
kernel-smp-devel-2.6.9-78.0.29.EL.i686.rpm
kernel-xenU-2.6.9-78.0.29.EL.i686.rpm
kernel-xenU-devel-2.6.9-78.0.29.EL.i686.rpm

ia64:
kernel-2.6.9-78.0.29.EL.ia64.rpm
kernel-debuginfo-2.6.9-78.0.29.EL.ia64.rpm
kernel-devel-2.6.9-78.0.29.EL.ia64.rpm
kernel-largesmp-2.6.9-78.0.29.EL.ia64.rpm
kernel-largesmp-devel-2.6.9-78.0.29.EL.ia64.rpm

noarch:
kernel-doc-2.6.9-78.0.29.EL.noarch.rpm

x86_64:
kernel-2.6.9-78.0.29.EL.x86_64.rpm
kernel-debuginfo-2.6.9-78.0.29.EL.x86_64.rpm
kernel-devel-2.6.9-78.0.29.EL.x86_64.rpm
kernel-largesmp-2.6.9-78.0.29.EL.x86_64.rpm
kernel-largesmp-devel-2.6.9-78.0.29.EL.x86_64.rpm
kernel-smp-2.6.9-78.0.29.EL.x86_64.rpm
kernel-smp-devel-2.6.9-78.0.29.EL.x86_64.rpm
kernel-xenU-2.6.9-78.0.29.EL.x86_64.rpm
kernel-xenU-devel-2.6.9-78.0.29.EL.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://www.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2009-4536.html
https://www.redhat.com/security/data/cve/CVE-2009-4537.html
https://www.redhat.com/security/data/cve/CVE-2009-4538.html
http://www.redhat.com/security/updates/classification/#important

8. Contact:

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

Copyright 2010 Red Hat, Inc.
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