[Ksplice][Virtuozzo 4 Updates] New updates available via Ksplice (virtuozzo4-stab116.1)

[Samson Yeung]

Synopsis: virtuozzo4-stab116.1 can now be patched using Ksplice
CVEs: CVE-2014-2678 CVE-2014-3917 CVE-2014-4699 CVE-2014-9090 CVE-2014-9322

Systems running Virtuozzo 4 or the OpenVZ RHEL 5 kernel can now use
Ksplice to patch against the latest Parallels Virtuozzo Containers
kernel security update, virtuozzo4-stab116.1.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack on Virtuozzo 4 or
OpenVZ on RHEL 5 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-2014-4699: Privilege escalation in ptrace() RIP modification.

Missing validation of the RIP value could allow an unprivileged user to
cause the CPU to fetch instructions from a non-canonical address.  On
some CPUs this could result in a denial-of-service or potentially allow
escalation of privileges.


* CVE-2014-2678: NULL pointer dereference in RDS protocol when binding.

A missing check in the wireless RDS protocol leads to a NULL pointer
dereference when there is no device. A local, unprivileged user could use
this flaw to cause a NULL pointer dereference and denial-of-service.


* CVE-2014-3917: Denial-of-service and information leak in audit syscall 
subsystem.

Linux kernel built with the system-call auditing support is vulnerable to a
kernel crash or information disclosure flaw caused by out of bounds memory
access.  When system call audit rules are present on a system, an
unprivileged user could use this flaw to leak kernel memory or cause a
denial-of-service.


* Memory leak in GFS2 filesystem for files with short lifespan.

A race condition in the GFS2 filesystem could lead to a memory leak for
files with a very short lifespan. A local, unprivileged user could use this
flaw to cause a denial-of-service.


* CVE-2014-9090, CVE-2014-9322: Denial-of-service in double-fault 
handling on bad stack segment.

A flaw when handling double faults associated with the stack segment
register could lead to a kernel panic.  A local, unprivileged user could
use this flaw via the modify_ldt() system call to cause a
denial-of-service.

SUPPORT

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