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Test ID:
Category:Red Hat Local Security Checks
Title:RedHat Security Advisory RHSA-2011:0928
The remote host is missing updates announced in
advisory RHSA-2011:0928.

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

This update fixes the following security issues:

* It was found that the receive hook in the ipip_init() function in the
ipip module, and in the ipgre_init() function in the ip_gre module, could
be called before network namespaces setup is complete. If packets were
received at the time the ipip or ip_gre module was still being loaded into
the kernel, it could cause a denial of service. (CVE-2011-1767,
CVE-2011-1768, Moderate)

* It was found that an mmap() call with the MAP_PRIVATE flag on /dev/zero
would create transparent hugepages and trigger a certain robustness check.
A local, unprivileged user could use this flaw to cause a denial of
service. (CVE-2011-2479, Moderate)

This update also fixes various 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 resolve these issues, and fix the bugs noted in the Technical
Notes. The system must be rebooted for this update to take effect.

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

Risk factor : Medium

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2011-1767
Common Vulnerability Exposure (CVE) ID: CVE-2011-1768
Common Vulnerability Exposure (CVE) ID: CVE-2011-2479
CopyrightCopyright (c) 2011 E-Soft Inc.

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