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==========================================================================
Ubuntu Security Notice USN-3674-1
June 11, 2018

linux vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux: Linux kernel

Details:

It was discovered that the netfilter subsystem of the Linux kernel did not
properly validate ebtables offsets. A local attacker could use this to
cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2018-1068)

It was discovered that a NULL pointer dereference existed in the RDS
(Reliable Datagram Sockets) protocol implementation in the Linux kernel. A
local attacker could use this to cause a denial of service (system crash).
(CVE-2018-7492)

Eyal Itkin discovered that the USB displaylink video adapter driver in the
Linux kernel did not properly validate mmap offsets sent from userspace. A
local attacker could use this to expose sensitive information (kernel
memory) or possibly execute arbitrary code. (CVE-2018-8781)

Xingyuan Lin discovered that a out-of-bounds read existed in the USB Video
Class (UVC) driver of the Linux kernel. A local attacker could use this to
expose sensitive information (kernel memory). (CVE-2017-0627)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 14.04 LTS:
  linux-image-3.13.0-151-generic  3.13.0-151.201
  linux-image-3.13.0-151-generic-lpae  3.13.0-151.201
  linux-image-3.13.0-151-lowlatency  3.13.0-151.201
  linux-image-3.13.0-151-powerpc-e500  3.13.0-151.201
  linux-image-3.13.0-151-powerpc-e500mc  3.13.0-151.201
  linux-image-3.13.0-151-powerpc-smp  3.13.0-151.201
  linux-image-3.13.0-151-powerpc64-emb  3.13.0-151.201
  linux-image-3.13.0-151-powerpc64-smp  3.13.0-151.201
  linux-image-generic             3.13.0.151.161
  linux-image-generic-lpae        3.13.0.151.161
  linux-image-lowlatency          3.13.0.151.161
  linux-image-powerpc-e500        3.13.0.151.161
  linux-image-powerpc-e500mc      3.13.0.151.161
  linux-image-powerpc-smp         3.13.0.151.161
  linux-image-powerpc64-emb       3.13.0.151.161
  linux-image-powerpc64-smp       3.13.0.151.161

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

References:
  https://usn.ubuntu.com/usn/usn-3674-1
  CVE-2017-0627, CVE-2018-1068, CVE-2018-7492, CVE-2018-8781

Package Information:
  https://launchpad.net/ubuntu/+source/linux/3.13.0-151.201


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