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Test ID:1.3.6.1.4.1.25623.1.0.71901
Category:Red Hat Local Security Checks
Title:RedHat Security Advisory RHSA-2012:0517
Summary:NOSUMMARY
Description:Description:
The remote host is missing updates announced in
advisory RHSA-2012:0517.

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 Linux kernel in the way splitting two extents in
ext4_ext_convert_to_initialized() worked. A local, unprivileged user with
the ability to mount and unmount ext4 file systems could use this flaw to
cause a denial of service. (CVE-2011-3638, Moderate)

Red Hat would like to thank Zheng Liu for reporting this issue.

This update also fixes the following bug:

* Starting with Red Hat Enterprise Linux 5.6, all devices that used the
ixgbe driver would stop stripping VLAN tags when the device entered
promiscuous mode. Placing a device in a bridge group causes the device to
enter promiscuous mode. This caused various issues under certain
configurations of bridging and VLANs. A patch has been provided to address
this issue and the devices now properly strip VLAN tags in the driver
whether in promiscuous mode or not. (BZ#809790)

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:
Please note that this update is available via
Red Hat Network. To use Red Hat Network, launch the Red
Hat Update Agent with the following command: up2date

http://rhn.redhat.com/errata/RHSA-2012-0517.html

Risk factor : Medium

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2011-3638
http://www.openwall.com/lists/oss-security/2011/10/24/2
CopyrightCopyright (c) 2012 E-Soft Inc. http://www.securityspace.com

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