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Ubuntu 12.04 LTS USN-3083-2 Moderate: Kernel Denial Of Service

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Calendar Grey September 19, 2016
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Ubuntu 12.04 is increasingly vulnerable due to its aging Linux kernel. Users must take action to secure their systems against potential exploits by updating.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux-lts-trusty: Linux hardware enablement kernel from Trusty for Precise

Details:

USN-3083-1 fixed vulnerabilities in the Linux kernel for Ubuntu 14.04

LTS. This update provides the corresponding updates for the Linux

Hardware Enablement (HWE) kernel from Ubuntu 14.04 LTS for Ubuntu

12.04 LTS.

Dmitry Vyukov discovered that the IPv6 implementation in the Linux kernel

did not properly handle options data, including a use-after-free. A local

attacker could use this to cause a denial of service (system crash) or

possibly execute arbitrary code. (CVE-2016-3841)

It was discovered that a race condition existed when handling heartbeat-

timeout events in the SCTP implementation of the Linux kernel. A remote

attacker could use this to cause a denial of service. (CVE-2015-8767)

Topics%20covered

Topics Covered

security advisory moderate denial of service kernel update ubuntu system crash cloud security

Update Instructions

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

Ubuntu 12.04 LTS:
  linux-image-3.13.0-96-generic   3.13.0-96.143~precise1
  linux-image-3.13.0-96-generic-lpae  3.13.0-96.143~precise1

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-3083-2

https://ubuntu.com/security/notices/USN-3083-1

CVE-2015-8767, CVE-2016-3841

September 19, 2016

Topics%20covered

Topics Covered

security advisory moderate denial of service kernel update ubuntu system crash cloud security

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-trusty/3.13.0-96.143~precise1

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