Important: kernel security and bug fix update

Synopsis

Important: kernel security and bug fix update

Type/Severity

Security Advisory: Important

Topic

Updated kernel packages that fix one security issue and one bug 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.

Description

The kernel packages contain the Linux kernel, the core of any Linux
operating system.

This update fixes the following security issue:

• a flaw was found in the sctp_rcv_ootb() function in the Linux kernel
  Stream Control Transmission Protocol (SCTP) implementation. A remote
  attacker could send a specially-crafted SCTP packet to a target system,
  resulting in a denial of service. (CVE-2010-0008, Important)
  

This update also fixes the following bug:

• the fix for CVE-2009-4538 provided by RHSA-2010:0111 introduced a
  regression, preventing Wake on LAN (WoL) working for network devices using
  the Intel PRO/1000 Linux driver, e1000e. Attempting to configure WoL for
  such devices resulted in the following error, even when configuring valid
  options:
  

"Cannot set new wake-on-lan settings: Operation not supported not
setting wol"

This update resolves this regression, and WoL now works as expected for
network devices using the e1000e driver. (BZ#565495)

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.

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
http://kbase.redhat.com/faq/docs/DOC-11259

Affected Products

• Red Hat Enterprise Linux Server - Extended Update Support 4.7 x86_64
• Red Hat Enterprise Linux Server - Extended Update Support 4.7 ia64
• Red Hat Enterprise Linux Server - Extended Update Support 4.7 i386
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 4.7 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 4.7 s390
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 4.7 ppc

Fixes

• BZ - 555658 - CVE-2010-0008 kernel: sctp remote denial of service
• BZ - 565495 - e1000e: wol is broken in kernel 2.6.9-89.19 [rhel-4.7.z]

CVEs

• CVE-2010-0008

References

• http://www.redhat.com/security/updates/classification/#important