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==========================================================================
Ubuntu Security Notice USN-3343-1
June 29, 2017

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:

USN 3335-1 fixed a vulnerability in the Linux kernel. However, that
fix introduced regressions for some Java applications. This update
addresses the issue. We apologize for the inconvenience.

It was discovered that a use-after-free vulnerability in the core voltage
regulator driver of the Linux kernel. A local attacker could use this to
cause a denial of service or possibly execute arbitrary code.
(CVE-2014-9940)

It was discovered that a buffer overflow existed in the trace subsystem in
the Linux kernel. A privileged local attacker could use this to execute
arbitrary code. (CVE-2017-0605)

Roee Hay discovered that the parallel port printer driver in the Linux
kernel did not properly bounds check passed arguments. A local attacker
with write access to the kernel command line arguments could use this to
execute arbitrary code. (CVE-2017-1000363)

Li Qiang discovered that an integer overflow vulnerability existed in the
Direct Rendering Manager (DRM) driver for VMWare devices in the Linux
kernel. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2017-7294)

It was discovered that a double-free vulnerability existed in the IPv4
stack of the Linux kernel. An attacker could use this to cause a denial of
service (system crash). (CVE-2017-8890)

Andrey Konovalov discovered an IPv6 out-of-bounds read error in the Linux
kernel's IPv6 stack. A local attacker could cause a denial of service or
potentially other unspecified problems. (CVE-2017-9074)

Andrey Konovalov discovered a flaw in the handling of inheritance in the
Linux kernel's IPv6 stack. A local user could exploit this issue to cause a
denial of service or possibly other unspecified problems. (CVE-2017-9075)

It was discovered that dccp v6 in the Linux kernel mishandled inheritance.
A local attacker could exploit this issue to cause a denial of service or
potentially other unspecified problems. (CVE-2017-9076)

It was discovered that the transmission control protocol (tcp) v6 in the
Linux kernel mishandled inheritance. A local attacker could exploit this
issue to cause a denial of service or potentially other unspecified
problems. (CVE-2017-9077)

It was discovered that the IPv6 stack in the Linux kernel was performing
its over write consistency check after the data was actually overwritten. A
local attacker could exploit this flaw to cause a denial of service (system
crash). (CVE-2017-9242)

Update instructions:

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

Ubuntu 14.04 LTS:
  linux-image-3.13.0-123-generic  3.13.0-123.172
  linux-image-3.13.0-123-generic-lpae  3.13.0-123.172
  linux-image-3.13.0-123-lowlatency  3.13.0-123.172
  linux-image-3.13.0-123-powerpc-e500  3.13.0-123.172
  linux-image-3.13.0-123-powerpc-e500mc  3.13.0-123.172
  linux-image-3.13.0-123-powerpc-smp  3.13.0-123.172
  linux-image-3.13.0-123-powerpc64-emb  3.13.0-123.172
  linux-image-3.13.0-123-powerpc64-smp  3.13.0-123.172
  linux-image-generic             3.13.0.123.133
  linux-image-generic-lpae        3.13.0.123.133
  linux-image-lowlatency          3.13.0.123.133
  linux-image-powerpc-e500        3.13.0.123.133
  linux-image-powerpc-e500mc      3.13.0.123.133
  linux-image-powerpc-smp         3.13.0.123.133
  linux-image-powerpc64-emb       3.13.0.123.133
  linux-image-powerpc64-smp       3.13.0.123.133

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://www.ubuntu.com/usn/usn-3343-1
  https://www.ubuntu.com/usn/usn-3335-1
  https://launchpad.net/bugs/1699772
  CVE-2014-9940, CVE-2017-0605, CVE-2017-1000363, CVE-2017-7294,
  CVE-2017-8890, CVE-2017-9074, CVE-2017-9075, CVE-2017-9076,
  CVE-2017-9077, CVE-2017-9242

Package Information:
  https://launchpad.net/ubuntu/+source/linux/3.13.0-123.172


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