Article ID: 114294, created on Jul 5, 2012, last review on May 9, 2014

  • Applies to:
  • Virtuozzo containers for Linux 4.0
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Synopsis:          New Parallels Virtuozzo Containers 4.0 kernel provides an update with security and stability fixes.
Product:           Parallels Virtuozzo Containers 4.0
Keywords:          "bugfixing" "stability" "security"

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This document provides information on the new Parallels Virtuozzo Containers 4.0
kernel, version 2.6.18-028stab101.1.

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TABLE OF CONTENTS

1. About This Release
2. Update Description
3. Obtaining New Kernel
4. Installing New Kernel
5. Required RPMs
6. References

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1. ABOUT THIS RELEASE

The current update for the Parallels Virtuozzo Containers 4.0 kernel provides a
new kernel based on the Red Hat 5.8 kernel (2.6.18-308.8.2.el5). The updated
kernel includes a number of security and stability fixes.

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2. UPDATES DESCRIPTION

This update contains fixes for the following issues:

- A VLAN interface over a bonding device could fail to work if the bonding
  device was included into a bridge. (PCLIN-30823)

- The NFSv4 server running on a Hardware Node could lead to a kernel panic.
  This bug has been introduced in the 2.6.18-028stab099.3 kernel. (OVZ 2227)

- A kernel panic could occur due to a use-after-free bug in xacct_add_task().
  (OVZ 2294)

- The "dmesg_restrict" sysctl kernel documentation has been enhanced to describe
   OpenVZ specific usage of this sysctl. (OVZ 2197)

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3. OBTAINING NEW KERNEL

You can download and install this kernel update using the "vzup2date" utility
included in the Parallels Virtuozzo Containers 4.0 distribution set.

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4. INSTALLING NEW KERNEL

To install the update, do the following:

I. Use the "rpm -ihv" command to install the new kernel and Virtuozzo modules.

# rpm -ivh vzkernel-2.6.18-028stab101.1.i686.rpm \
vzmodules-2.6.18-028stab101.1.i686.rpm
Preparing...                ################################# [100%]
    1:vzkernel               ################################# [50%]
    2:vzmodules              ################################# [100%]

    Please DO NOT USE the "rpm -Uhv" command to install the kernel. Otherwise,
    all the kernels previously installed on your system may be removed from
    the Hardware Node.

II. You can adjust your boot loader configuration file to have the new kernel
    loaded by default. If you use the LILO bootloader, please do not forget to
    execute the "lilo" command to write the changes to the boot sector:

     # lilo
     Added Virtuozzo2 *
     Added Virtuozzo1
     Added linux
     Added linux-up

III. Reboot your computer with the "shutdown -r now" command to boot the new
     kernel.

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5. REQUIRED RPMS

Depending on the processor installed on the Hardware Node, the following RPM
packages are included in the kernel update:

x86 kernels:

- SMP:
   vzkernel-2.6.18-028stab101.1.i686.rpm
   vzmodules-2.6.18-028stab101.1.i686.rpm

- Enterprise:
   vzkernel-ent-2.6.18-028stab101.1.i686.rpm
   vzmodules-ent-2.6.18-028stab101.1.i686.rpm

- Enterprise with the 4GB split feature disabled:
   vzkernel-PAE-2.6.18-028stab101.1.i686.rpm
   vzmodules-PAE-2.6.18-028stab101.1.i686.rpm


x86_64 kernels:

- SMP:
   vzkernel-2.6.18-028stab101.1.x86_64.rpm
   vzmodules-2.6.18-028stab101.1.x86_64.rpm

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6. REFERENCES

http://rhn.redhat.com/errata/RHSA-2012-0721.html
https://www.redhat.com/security/data/cve/CVE-2012-0217.html
https://www.redhat.com/security/data/cve/CVE-2012-2934.html

http://rhn.redhat.com/errata/RHSA-2012-0690.html
https://www.redhat.com/security/data/cve/CVE-2012-2136.html

http://rhn.redhat.com/errata/RHSA-2012-0480.html
https://www.redhat.com/security/data/cve/CVE-2012-1583.html

http://rhn.redhat.com/errata/RHBA-2012-0361.html

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Copyright (c) 1999-2012 Parallels Holdings, Ltd. and its affiliates. All rights
reserved.

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