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Parallels Cloud Server 6.0 Update 5 Hotfix 8 (6.0.5-1807)

Last Updated: Sep 03, 2016 07:39AM UTC
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Synopsis:          A new Parallels Cloud Server 6.0 kernel update
addressing security, performance, and stability issues.

Issue date:        2014-03-12
Product:  Parallels Cloud Server 6.0
Keywords:          'bugfix' 'stability' 'security'
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This document provides information on the new Parallels Cloud Server 6.0
kernel, version 2.6.32-042stab085.17.
 
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CONTENTS
 
1. About This Update
2. Update Description
3. Obtaining the New Kernel
4. References
 
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1. ABOUT THIS UPDATE
 
The current update for the Parallels Cloud Server 6.0 kernel provides a
new kernel based on the Red Hat Enterprise Linux 6.5 kernel
(2.6.32-431.1.2.el6).  The updated kernel includes a number of security,
performance, and stability fixes.
 
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2. UPDATE DESCRIPTION
 
This update includes the following fixes and improvements:
 
* The OOMGUARPAGES failcounter sometimes may not be updated in case the
OOM  killer enters the "berserker" mode. (PCLIN-32154)
 
* Under certain circumstances, the network may be flooded by UDP unicast
  packets amplified by Containers working in the "bridged" mode.
  (PSBM-24469)
 
* The UID/GID of UNIX sockets created on tmpfs filesystem could be
restored  incorrectly after online Container migration which could cause
  application failures. (PSBM-25014)
 
* Under certain conditions, file checksums can be calculated
incorrectly,  causing pfcache to malfunction. (PSBM-23774)
 
* An online migration of a long-living ploop-based Container could lead
to a  kernel panic on the destination Node caused by improper ploop version
  detection. (PSBM-24408)
 
* Previously, a process inside a Container which tried to allocate more
than  half of RAM provided to that Container was usually killed by the
  SIGBUS signal. This behavior was correct but not user-friendly enough.
  The improved algorihtm checks the amount of free shared memory in
  advance and returns -ENOSPC to the requester instead. (PSBM-23408,
  OVZ# 2805)
 
* Client cannot connect to Parallels Power Panel on port 4643 with a
  lower-than-1500-MTU router. Such connections hang. (PSBM-24217)
 
* Under certain conditions, the Container backup and online migration
  operations could cause a kernel panic in the ext4 code in case /vz was
  mounted without journal. (PCLIN-32263)
 
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3. OBTAINING THE NEW KERNEL
 
You can download and install this kernel update using the yum utility
included in the Parallels Cloud Server 6.0 distribution set.
 
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4. REFERENCES
 
https://rhn.redhat.com/errata/RHSA-2013-1801.html
 
https://www.redhat.com/security/data/cve/CVE-2013-2141.html
https://www.redhat.com/security/data/cve/CVE-2013-4470.html
https://www.redhat.com/security/data/cve/CVE-2013-6367.html
https://www.redhat.com/security/data/cve/CVE-2013-6368.html
 
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Copyright (c) 1999-2014 Parallels IP Holdings GmbH and its affiliates.
All rights reserved.
 

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