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RHEL 4.7 RHSA-2010:0424-01 Important: Kernel DoS Patch Available

Calendar Jun 05, 2010 • User Avatar LinuxSecurity Advisories
4 - 7 min read
Redhat Large Esm H500
Topics%20covered

Topics Covered

security advisory security issue remote exploit DoS kernel patch Red Hat Enterprise Linux kernel enhancement
Updated kernel packages that fix one security issue and add one enhancement are now available for Red Hat Enterprise Linux 4.7 Extended Update Support. The Red Hat Security Response Team has rated this update as having [More...] 
====================================================================                   Red Hat Security Advisory

Synopsis:          Important: kernel security and enhancement update
Advisory ID:       RHSA-2010:0424-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2010:0424.html
Issue date:        2010-05-18
CVE Names:         CVE-2010-1188 
====================================================================
1. Summary:

Updated kernel packages that fix one security issue and add one enhancement
are now available for Red Hat Enterprise Linux 4.7 Extended Update Support.

The Red Hat Security Response Team has rated this update as having
important security impact. A Common Vulnerability Scoring System (CVSS)
base score, which gives a detailed severity rating, is available from the
CVE link in the References section.

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 issue:

* a use-after-free flaw was found in the tcp_rcv_state_process() function
in the Linux kernel TCP/IP protocol suite implementation. If a system using
IPv6 had the IPV6_RECVPKTINFO option set on a listening socket, a remote
attacker could send an IPv6 packet to that system, causing a kernel panic
(denial of service). (CVE-2010-1188, Important)

This update also adds the following enhancement:

* kernel support for the iptables connlimit module. This module can be used
to help mitigate some types of denial of service attacks. Note: This update
alone does not address connlimit support. A future iptables package update
will allow connlimit to work correctly. (BZ#563222)

Users should upgrade to these updated packages, which contain backported
patches to correct this issue and add this enhancement. 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

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/):

563222 - [RFE ] Connlimit kernel module support [rhel-4.9] [rhel-4.7.z]
577711 - CVE-2010-1188 kernel: ipv6: skb is unexpectedly freed

6. Package List:

Red Hat Enterprise Linux AS version 4.7.z:

Source:
kernel-2.6.9-78.0.31.EL.src.rpm

i386:
kernel-2.6.9-78.0.31.EL.i686.rpm
kernel-debuginfo-2.6.9-78.0.31.EL.i686.rpm
kernel-devel-2.6.9-78.0.31.EL.i686.rpm
kernel-hugemem-2.6.9-78.0.31.EL.i686.rpm
kernel-hugemem-devel-2.6.9-78.0.31.EL.i686.rpm
kernel-smp-2.6.9-78.0.31.EL.i686.rpm
kernel-smp-devel-2.6.9-78.0.31.EL.i686.rpm
kernel-xenU-2.6.9-78.0.31.EL.i686.rpm
kernel-xenU-devel-2.6.9-78.0.31.EL.i686.rpm

ia64:
kernel-2.6.9-78.0.31.EL.ia64.rpm
kernel-debuginfo-2.6.9-78.0.31.EL.ia64.rpm
kernel-devel-2.6.9-78.0.31.EL.ia64.rpm
kernel-largesmp-2.6.9-78.0.31.EL.ia64.rpm
kernel-largesmp-devel-2.6.9-78.0.31.EL.ia64.rpm

noarch:
kernel-doc-2.6.9-78.0.31.EL.noarch.rpm

ppc:
kernel-2.6.9-78.0.31.EL.ppc64.rpm
kernel-2.6.9-78.0.31.EL.ppc64iseries.rpm
kernel-debuginfo-2.6.9-78.0.31.EL.ppc64.rpm
kernel-debuginfo-2.6.9-78.0.31.EL.ppc64iseries.rpm
kernel-devel-2.6.9-78.0.31.EL.ppc64.rpm
kernel-devel-2.6.9-78.0.31.EL.ppc64iseries.rpm
kernel-largesmp-2.6.9-78.0.31.EL.ppc64.rpm
kernel-largesmp-devel-2.6.9-78.0.31.EL.ppc64.rpm

s390:
kernel-2.6.9-78.0.31.EL.s390.rpm
kernel-debuginfo-2.6.9-78.0.31.EL.s390.rpm
kernel-devel-2.6.9-78.0.31.EL.s390.rpm

s390x:
kernel-2.6.9-78.0.31.EL.s390x.rpm
kernel-debuginfo-2.6.9-78.0.31.EL.s390x.rpm
kernel-devel-2.6.9-78.0.31.EL.s390x.rpm

x86_64:
kernel-2.6.9-78.0.31.EL.x86_64.rpm
kernel-debuginfo-2.6.9-78.0.31.EL.x86_64.rpm
kernel-devel-2.6.9-78.0.31.EL.x86_64.rpm
kernel-largesmp-2.6.9-78.0.31.EL.x86_64.rpm
kernel-largesmp-devel-2.6.9-78.0.31.EL.x86_64.rpm
kernel-smp-2.6.9-78.0.31.EL.x86_64.rpm
kernel-smp-devel-2.6.9-78.0.31.EL.x86_64.rpm
kernel-xenU-2.6.9-78.0.31.EL.x86_64.rpm
kernel-xenU-devel-2.6.9-78.0.31.EL.x86_64.rpm

Red Hat Enterprise Linux ES version 4.7.z:

Source:
kernel-2.6.9-78.0.31.EL.src.rpm

i386:
kernel-2.6.9-78.0.31.EL.i686.rpm
kernel-debuginfo-2.6.9-78.0.31.EL.i686.rpm
kernel-devel-2.6.9-78.0.31.EL.i686.rpm
kernel-hugemem-2.6.9-78.0.31.EL.i686.rpm
kernel-hugemem-devel-2.6.9-78.0.31.EL.i686.rpm
kernel-smp-2.6.9-78.0.31.EL.i686.rpm
kernel-smp-devel-2.6.9-78.0.31.EL.i686.rpm
kernel-xenU-2.6.9-78.0.31.EL.i686.rpm
kernel-xenU-devel-2.6.9-78.0.31.EL.i686.rpm

ia64:
kernel-2.6.9-78.0.31.EL.ia64.rpm
kernel-debuginfo-2.6.9-78.0.31.EL.ia64.rpm
kernel-devel-2.6.9-78.0.31.EL.ia64.rpm
kernel-largesmp-2.6.9-78.0.31.EL.ia64.rpm
kernel-largesmp-devel-2.6.9-78.0.31.EL.ia64.rpm

noarch:
kernel-doc-2.6.9-78.0.31.EL.noarch.rpm

x86_64:
kernel-2.6.9-78.0.31.EL.x86_64.rpm
kernel-debuginfo-2.6.9-78.0.31.EL.x86_64.rpm
kernel-devel-2.6.9-78.0.31.EL.x86_64.rpm
kernel-largesmp-2.6.9-78.0.31.EL.x86_64.rpm
kernel-largesmp-devel-2.6.9-78.0.31.EL.x86_64.rpm
kernel-smp-2.6.9-78.0.31.EL.x86_64.rpm
kernel-smp-devel-2.6.9-78.0.31.EL.x86_64.rpm
kernel-xenU-2.6.9-78.0.31.EL.x86_64.rpm
kernel-xenU-devel-2.6.9-78.0.31.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://access.redhat.com/security/team/key#package

7. References:

https://access.redhat.com/security/cve/CVE-2010-1188
https://access.redhat.com/security/updates/classification#important

8. Contact:

The Red Hat security contact is .  More contact
details at https://access.redhat.com/security/team/contact

Copyright 2010 Red Hat, Inc.

RHEL 4.7 RHSA-2010:0424-01 Important: Kernel DoS Patch Available

red hat
Calendar Grey June 5, 2010
Dist Redhat Esm H88
Critical kernel enhancement released for Red Hat Enterprise Linux 4.7, targeting security vulnerabilities and improving overall performance.
Updated kernel packages that fix one security issue and add one enhancement are now available for Red Hat Enterprise Linux 4.7 Extended Update Support

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

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.

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.
This update fixes the following security issue:
* a use-after-free flaw was found in the tcp_rcv_state_process() function in the Linux kernel TCP/IP protocol suite implementation. If a system using IPv6 had the IPV6_RECVPKTINFO option set on a listening socket, a remote attacker could send an IPv6 packet to that system, causing a kernel panic (denial of service). (CVE-2010-1188, Important)
This update also adds the following enhancement:
* kernel support for the iptables connlimit module. This module can be used to help mitigate some types of denial of service attacks. Note: This update alone does not address connlimit support. A future iptables package update will allow connlimit to work correctly. (BZ#563222)
Users should upgrade to these updated packages, which contain backported patches to correct this issue and add this enhancement. The system must be rebooted for this update to take effect.

Topics%20covered

Topics Covered

security advisory security issue remote exploit DoS kernel patch Red Hat Enterprise Linux kernel enhancement

References

https://access.redhat.com/security/cve/CVE-2010-1188 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux AS version 4.7.z:
Source: kernel-2.6.9-78.0.31.EL.src.rpm
i386: kernel-2.6.9-78.0.31.EL.i686.rpm kernel-debuginfo-2.6.9-78.0.31.EL.i686.rpm kernel-devel-2.6.9-78.0.31.EL.i686.rpm kernel-hugemem-2.6.9-78.0.31.EL.i686.rpm kernel-hugemem-devel-2.6.9-78.0.31.EL.i686.rpm kernel-smp-2.6.9-78.0.31.EL.i686.rpm kernel-smp-devel-2.6.9-78.0.31.EL.i686.rpm kernel-xenU-2.6.9-78.0.31.EL.i686.rpm kernel-xenU-devel-2.6.9-78.0.31.EL.i686.rpm
ia64: kernel-2.6.9-78.0.31.EL.ia64.rpm kernel-debuginfo-2.6.9-78.0.31.EL.ia64.rpm kernel-devel-2.6.9-78.0.31.EL.ia64.rpm kernel-largesmp-2.6.9-78.0.31.EL.ia64.rpm kernel-largesmp-devel-2.6.9-78.0.31.EL.ia64.rpm
noarch: kernel-doc-2.6.9-78.0.31.EL.noarch.rpm
ppc: kernel-2.6.9-78.0.31.EL.ppc64.rpm kernel-2.6.9-78.0.31.EL.ppc64iseries.rpm kernel-debuginfo-2.6.9-78.0.31.EL.ppc64.rpm kernel-debuginfo-2.6.9-78.0.31.EL.ppc64iseries.rpm kernel-devel-2.6.9-78.0.31.EL.ppc64.rpm kernel-devel-2.6.9-78.0.31.EL.ppc64iseries.rpm kernel-largesmp-2.6.9-78.0.31.EL.ppc64.rpm kernel-largesmp-devel-2.6.9-78.0.31.EL.ppc64.rpm
s390: kernel-2.6.9-78.0.31.EL.s390.rpm kernel-debuginfo-2.6.9-78.0.31.EL.s390.rpm kernel-devel-2.6.9-78.0.31.EL.s390.rpm
s390x: kernel-2.6.9-78.0.31.EL.s390x.rpm kernel-debuginfo-2.6.9-78.0.31.EL.s390x.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2010:0424-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2010:0424.html
Issue date: 2010-05-18

Topic

Updated kernel packages that fix one security issue and add one enhancementare now available for Red Hat Enterprise Linux 4.7 Extended Update Support.The Red Hat Security Response Team has rated this update as havingimportant security impact. A Common Vulnerability Scoring System (CVSS)base score, which gives a detailed severity rating, is available from theCVE link in the References section.

Topics%20covered

Topics Covered

security advisory security issue remote exploit DoS kernel patch Red Hat Enterprise Linux kernel enhancement

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

Bugs Fixed

563222 - [RFE ] Connlimit kernel module support [rhel-4.9] [rhel-4.7.z]

577711 - CVE-2010-1188 kernel: ipv6: skb is unexpectedly freed

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