[Ksplice][EL6-Updates] New updates available via Ksplice (RHSA-2014:1392-01)

[Oracle Ksplice]

Synopsis: RHSA-2014:1392-01 can now be patched using Ksplice
CVEs: CVE-2013-2596 CVE-2013-4483 CVE-2014-3122 CVE-2014-4608 CVE-2014-4653 CVE-2014-4654 CVE-2014-4655 CVE-2014-5045 CVE-2014-5077

Systems running RHCK on Oracle Linux 6, Red Hat Enterprise Linux 6,
CentOS 6, and Scientific Linux 6 can now use Ksplice to patch against
the latest Red Hat Security Advisory, RHSA-2014:1392-01.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack on OL 6, RHEL 6, CentOS
6, and Scientific Linux 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-2014-5077: Remote denial-of-service in SCTP on simultaneous connections.

Linux kernel built with the support for Stream Control Transmission
Protocol is vulnerable to a NULL pointer dereference flaw. It could occur
when simultaneous new connections are initiated between the same pair of
hosts. A remote user/program could use this flaw to crash the system kernel
resulting in denial-of-service.


* CVE-2013-2596: Privilege escalation in video frame buffer driver.

Integer overflow in the fb_mmap() function allows local users to create a
read-write memory mapping for the entirety of kernel memory, and
consequently gain privileges, via crafted /dev/graphics/fb0 mmap2 system
calls.


* CVE-2014-3122: Denial-of-service in non-linear memory mappings.

An assertion failure and kernel panic can be triggered when unmapping a
non-linear memory mapping.  This could be exploited by a local,
unprivileged user to crash the system.


* CVE-2014-4608: Integer overflow in LZO when uncompressing blocks larger than 16MB.

Lack of input validation in the LZO library could cause an integer overflow
when uncompressing blocks larger than 16MB, potentially leading to kernel
code execution. A local attacker could use this flaw to elevate privileges.


* CVE-2014-4654, CVE-2014-4655: Missing validity checks in ALSA user controls.

Missing validity checks when replacing user controls could lead to an attempt
to free something that is not a user control or a control that is not owned
by the process. Userspace was also allowed to to bypass user control count
by overflowing it.


* CVE-2014-4653: Use after free in ALSA card controls.

Missing synchronization in ALSA card controls could lead to a control
being freed while being in use.


* CVE-2014-5045: Denial-of-service in virtual filesystem core when trying to unmount a symlink.

Trying to unmount a symlink file on a mounted filesystem would increase the
reference counter for the mount point, preventing any further unmounting. A
local, privileged user could use this flaw to prevent any mount point to be
unmounted.


* CVE-2013-4483: Denial-of-service in IPC subsystem when taking a reference count.

The ipc_rcu_putref function in ipc/util.c in the Linux kernel before 3.10
does not properly manage a reference count, which allows local users to
cause a denial of service (memory consumption or system crash) via a
crafted application.

SUPPORT

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