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Ubuntu 14.04 LTS USN-3312-2 Critical: Kernel Security Issues

ubuntu
Calendar Grey June 7, 2017
Dist Ubuntu Esm H88
A variety of security patches for the Linux kernel within Ubuntu 14.04 LTS have been introduced to mitigate several weaknesses and associated risks.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty

Details:

USN-3312-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04

LTS. This update provides the corresponding updates for the Linux

Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu

14.04 LTS.

It was discovered that the netfilter netlink implementation in the Linux

kernel did not properly validate batch messages. A local attacker with the

CAP_NET_ADMIN capability could use this to expose sensitive information or

cause a denial of service. (CVE-2016-7917)

Qian Zhang discovered a heap-based buffer overflow in the tipc_msg_build()

function in the Linux kernel. A local attacker could use to cause a denial

of service (system crash) or possibly execute arbitrary code with

administrative privileges. (CVE-2016-8632)

It was discovered that the keyring implementation in the Linux ker...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service security issue buffer overflow critical ubuntu linux kernel

Update Instructions

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

Ubuntu 14.04 LTS:
  linux-image-4.4.0-79-generic    4.4.0-79.100~14.04.1
  linux-image-4.4.0-79-generic-lpae  4.4.0-79.100~14.04.1
  linux-image-4.4.0-79-lowlatency  4.4.0-79.100~14.04.1
  linux-image-4.4.0-79-powerpc-e500mc  4.4.0-79.100~14.04.1
  linux-image-4.4.0-79-powerpc-smp  4.4.0-79.100~14.04.1
  linux-image-4.4.0-79-powerpc64-emb  4.4.0-79.100~14.04.1
  linux-image-4.4.0-79-powerpc64-smp  4.4.0-79.100~14.04.1
  linux-image-generic-lpae-lts-xenial  4.4.0.79.64
  linux-image-generic-lts-xenial  4.4.0.79.64
  linux-image-lowlatency-lts-xenial  4.4.0.79.64
  linux-image-powerpc-e500mc-lts-xenial  4.4.0.79.64
  linux-image-powerpc-smp-lts-xenial  4.4.0.79.64
  linux-image-powerpc64-emb-lts-xenial  4.4.0.79.64
  linux-image-powerpc64-smp-lts-xenial  4.4.0.79.64

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://ubuntu.com/security/notices/USN-3312-2

https://ubuntu.com/security/notices/USN-3312-1

CVE-2016-7913, CVE-2016-7917, CVE-2016-8632, CVE-2016-9083,

CVE-2016-9084, CVE-2016-9604, CVE-2017-0605, CVE-2017-2596,

CVE-2017-2671, CVE-2017-6001, CVE-2017-7472, CVE-2017-7618,

CVE-2017-7645, CVE-2017-7889, CVE-2017-7895

Severity
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Critical

June 07, 2017

Topics%20covered

Topics Covered

security advisory denial of service security issue buffer overflow critical ubuntu linux kernel

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-79.100~14.04.1

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