[Ksplice][Ubuntu-14.04-Updates] New updates available via Ksplice (3.13.0-93.140)

[Oracle Ksplice]

Synopsis: 3.13.0-93.140 can now be patched using Ksplice
CVEs: CVE-2016-4470 CVE-2016-5243

Systems running Ubuntu 14.04 Trusty can now use Ksplice to patch
against the latest Ubuntu kernel update, 3.13.0-93.140.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack on Ubuntu 14.04 Trusty
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-2016-4470: Denial-of-service in the keyring subsystem.

Failure to check that a key was properly added to a keyring before removing
it could lead to a kernel crash.  A local, unprivileged user could use this
flaw to cause a denial-of-service.


* CVE-2016-5243: Information leak in the Transparent Inter Process Communication protocol.

The use of strcpy() inside the Transparant Inter Process Communication
protocol (TIPC) when dumping the link name leads to a maximum of 58 bytes
leaked to userspace.  A local attacker could use this flaw to gain
information about the running kernel and facilitate an attack.


* Kernel panic when failing to create a Unix98 PTY.

A NULL pointer dereference and kernel panic is triggered when a Unix98
pseudo-terminal cannot be allocated because of memory pressure. A local
user could use this flaw to cause a denial of service.


* Deadlock when releasing page in memory balloon driver.

Incorrect locking in the memory balloon subsystem can trigger a deadlock
when releasing a page back to the guest system.

SUPPORT

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