[Ksplice][Ubuntu-14.04-Updates] New Ksplice updates for Ubuntu 14.04 Trusty (USN-3470-1)

[Oracle Ksplice]

Synopsis: USN-3470-1 can now be patched using Ksplice
CVEs: CVE-2016-8632 CVE-2017-10661 CVE-2017-10662 CVE-2017-10663 CVE-2017-10911 CVE-2017-11176 CVE-2017-14340

Systems running Ubuntu 14.04 Trusty can now use Ksplice to patch
against the latest Ubuntu Security Notice, USN-3470-1.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running 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-2016-8632: Denial-of-service when using TIPC and too short MTU.

Missing checks when checking TIPC (Transparent Inter Process
Communication) header could lead to a buffer overflow if device MTU is
too short. An attacker with ability to configure MTU could use this flaw
to cause a denial-of-service.


* CVE-2017-11176: Use-after-free in message queue notify syscall.

A race condition when closing a message queue file descriptor could cause
the memory for the associated socket to be freed twice, corrupting memory
or causing a denial-of-service.


* CVE-2017-10911: Information leak in Xen block-device backend driver.

A data structure allocated on stack in Xen block-device backend driver
may leak sensitive data through padding fields. A malicious unprivileged
guest may be able to obtain sensitive information from the host or other
guests.


* CVE-2017-14340: Denial-of-service when flushing data on XFS without a realtime device.

Lack of input validation before trying to flush data to a real-time device
on XFS where the device might not be present leads to a NULL pointer
dereference.  A local, unprivileged user can use this flaw to cause a
denial-of-service.


* CVE-2017-10663: Privilege escalation when mounting F2FS image.

Missing sanity-checks in Flash-Friendly File System allows out-of-bound
write operations. This could enable a malicious user to escalate privilege
when a raw F2FS image is mounted.


* CVE-2017-10662: Privilege escalation in Flash-Friendly Filesystem (F2FS).

A missing check in the f2fs code could allow local users to gain
privileges.


* CVE-2017-10661: Data race when canceling timer file descriptors causes denial-of-service.

Missing serialization when canceling timer file descriptors could cause
the cancels to race, causing a data race or use-after-free, potentially
resulting in a kernel crash and denial-of-service.

SUPPORT

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