[Announce] Kernel RHEL6 042stab128.2

[Vasily Averin]

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

Changes and Download
====================
(since 042stab127.2)

* Rebase to RHEL6u9 kernel 2.6.32-696.23.1.el6
* The kernel was recompiled by the updated gcc with retpolines support. Retpolines are a technique used by the kernel to reduce overhead of mitigating Spectre Variant 2 attacks described in CVE-2017-5715.
* [Moderate] The tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c allows remote attackers to cause a denial of service (use-after-free and memory corruption) or possibly have unspecified other impact by leveraging the presence of xt_TCPMSS in an iptables action. (CVE-2017-18017)
* [Moderate] In the Linux kernel through 4.14.13, the rds_message_alloc_sgs() function does not validate a value that is used during DMA page allocation, leading to a heap-based out-of-bounds write (related to the rds_rdma_extra_size() function in 'net/rds/rdma.c') and thus to a system panic. (CVE-2018-5332)
* [Moderate] The rds_cmsg_atomic() function in 'net/rds/rdma.c' mishandles cases where page pinning fails or an invalid address is supplied by a user. This can lead to a NULL pointer dereference in rds_atomic_free_op() and thus to a system panic. (CVE-2018-5333)
* Fixed compilation warning in ip_map_cached_get(). (PSBM-80063)
* nfs server kernel thread running on host was crashed in vzquota_dparent_check_same(). (PSBM-80879)
* Minor ploop improvements. (PSBM-81964)
* Reverted Red Hat patch "mm: don't return 0 too early from find_get_pages()" included into 2.6.32-696.22.1.el6 kernel. Under certain circumstances this patch caused node to hang because of endless cycle in find_get_pages(). (PSBM-82508) 

For more info and downloads, see:
https://openvz.org/Download/kernel/rhel6/042stab128.2

See also
========

https://access.redhat.com/errata/RHSA-2018:0169
https://access.redhat.com/errata/RHSA-2018:0512
https://access.redhat.com/errata/RHBA-2018:0513
https://www.redhat.com/security/data/cve/CVE-2017-18017.html 
https://www.redhat.com/security/data/cve/CVE-2018-5332.html
https://www.redhat.com/security/data/cve/CVE-2018-5333.html
https://access.redhat.com/solutions/3390081

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

Regards,
    OpenVZ team