[Announce] Kernel RHEL6 stable 042stab116.1

[Kir Kolyshkin]

OpenVZ project released an updated RHEL6 based kernel.
Read below for more information. Everyone is advised to update.


Changes and Download
====================
(since 042stab113.21)

* Rebase to RHEL6 kernel 2.6.32-573.26.1.el6
* ipv4: Don't do expensive useless work during inetdev destroy. 
(CVE-2016-3156, PSBM-42403)
   issue was workarounded in 042stab113.11 kernel by adding 
per-container limit on using of ipv4 addresses
   here old workaround is replaced by fix backported from mainline linux 
kernel.
* A flaw was found in the way the Linux kernel handled IRET faults 
during the processing of NMIs. An unprivileged, local user could use 
this flaw to crash the system or, potentially (although highly 
unlikely), escalate their privileges on the system. (CVE-2015-5157)
* A race condition flaw was found in the way the Linux kernel's SCTP 
implementation handled sctp_accept() during the processing of heartbeat 
timeout events. A remote attacker could use this flaw to prevent further 
connections to be accepted by the SCTP server running on the system, 
resulting in a denial of service. (CVE-2015-8767)
* NFS client with kernels 2.6.32-573.10.2.el6 or above could hang with 
'not responding, still trying' messages and running processes in 
spinlock. (https://access.redhat.com/solutions/2215491)
* Network devices that used the mainline veth driver did not check TCP 
checksums. (https://access.redhat.com/solutions/2216661)
   vethX interfaces of OpenVZ and VZ containers are not affected as they 
use a different driver.
   The affected veth driver was used inside Docker-ready containers or 
could be used by host admin for their own purposes.
* Fix for kernel BUG at block/cfq-iosched.c:2806 (OVZ-6651)
* Fix for kernel crash inside pick_next_task_fair() (PSBM-44475)
* write to CIFS share hangs (OVZ-6642)
* ub memcg: fake use_hierarhy file is required for KVM's libvirtd (OVZ-6660)
* Warning at drivers/block/ploop/io_direct_map.c:841 
trim_extent_mappings. (PSBM-45999)
* LDT entries were incorrectly restored from CPT image. (OVZ-6228)
* some internal fixes

See also
========
http://rhn.redhat.com/errata/RHSA-2016-0715.html
https://access.redhat.com/security/cve/CVE-2015-5157
https://access.redhat.com/security/cve/CVE-2015-8767
https://access.redhat.com/security/cve/CVE-2016-3156

For more info and downloads, see:
https://openvz.org/Download/kernel/rhel6/042stab116.1

Bug reporting
=============
Use http://bugs.openvz.org/ to report any bugs found.


Other sources of info on updates
================================
See http://planet.openvz.org/ to view all the news (including updates)
online. There you can also find RSS/Atom feed links.


Regards,
   OpenVZ team.