[Ksplice-cloudlinux6-updates] New updates available via Ksplice (2.6.32-531.29.2.lve1.3.11.1.el6)

[Oracle Ksplice]

Synopsis: 2.6.32-531.29.2.lve1.3.11.1.el6 can now be patched using Ksplice
CVEs: CVE-2014-3535 CVE-2014-3917 CVE-2014-4667 CVE-2014-9090 CVE-2014-9322

Systems running CloudLinux 6 can now use Ksplice to patch against the
latest CloudLinux 6 kernel update, 2.6.32-531.29.2.lve1.3.11.1.el6.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack on CloudLinux 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-2014-9090, 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.


* CVE-2014-3535: NULL pointer dereference in VxLAN packet logging.

A NULL pointer dereference flaw was found in the way the Linux kernel's
networking implementation handled logging while processing certain invalid
packets coming in via a VxLAN interface. A remote attacker could use this
flaw to crash the system by sending a specially crafted packet to such an
interface.


* 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.


* CVE-2014-4667: Denial-of-service in SCTP stack when unpacking a COOKIE_ECHO chunk.

Incorrect reference counting in the error path of sctp_unpack_cookie()
could corrupt the backlog reference counter, preventing any future SCTP
association. A remote attacker could use this flaw to cause a
denial-of-service.


* Reduce usage of reserved percpu memory.

The kernel reserves a limited area of percpu memory for loadable modules
containing static percpu data and exhausting this can limit the ability
to load modules.


* Privilege escalation in containers by accessing the host filesystem.

A missing check in the pivot_root system call allows a privileged container
user to access the host root filesystem, potentially leading to privilege
escalation.

SUPPORT

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