[Ksplice][Virtuozzo 4.7 Updates] New updates available via Ksplice (2.6.32-042stab092.3)

[Oracle Ksplice]

Synopsis: 2.6.32-042stab092.3 can now be patched using Ksplice
CVEs: CVE-2014-4943

Systems running Virtuozzo 4.7 or the OpenVZ RHEL 6 kernel can now use
Ksplice to patch against the latest Parallels Virtuozzo Containers 4.7
kernel security update, 2.6.32-042stab092.3.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack on Virtuozzo 4.7 or
OpenVZ on RHEL 6 install these updates.

On systems that have "autoinstall = yes" in /etc/uptrack/uptrack.conf,
these updates will be installed automatically and you do not need to
take any action.

Alternatively, you can install these updates by running:

# /usr/sbin/uptrack-upgrade -y


DESCRIPTION

* CVE-2014-4943: Privilege escalation in PPP over L2TP setsockopt/getsockopt.

PPP over L2TP sockets incorrectly used UDP's getsockopt and setsockopt
as a fallback handler. Since UDP's implementation expects different
data structures, a local attacker could corrupt kernel memory and gain
root privileges.


* Denial-of-service when restarting a container or calling umount.

A flaw in the umount() syscall could lead to containers failing to restart
and memory leaks. A local, unprivileged user, even when constrained to its
own container, could use this flaw to cause a denial-of-service.

SUPPORT

Ksplice support is available at ksplice-support_ww at oracle.com.