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Ubuntu 14.04 LTS USN-3083-1 Critical: Linux Kernel Denial of Service

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Calendar Grey September 19, 2016
Scroller Ubuntu
Multiple vulnerabilities addressed in Ubuntu's Linux kernel affecting Denial of Service. Ensure you update your system without delay.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux: Linux kernel

Details:

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 denial of service 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-3.13.0-96-generic   3.13.0-96.143
  linux-image-3.13.0-96-generic-lpae  3.13.0-96.143
  linux-image-3.13.0-96-lowlatency  3.13.0-96.143
  linux-image-3.13.0-96-powerpc-e500  3.13.0-96.143
  linux-image-3.13.0-96-powerpc-e500mc  3.13.0-96.143
  linux-image-3.13.0-96-powerpc-smp  3.13.0-96.143
  linux-image-3.13.0-96-powerpc64-emb  3.13.0-96.143
  linux-image-3.13.0-96-powerpc64-smp  3.13.0-96.143

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-3083-1

CVE-2015-8767, CVE-2016-3841

Severity
critical
Lowest
Low
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Critical

September 19, 2016

Topics%20covered

Topics Covered

security advisory denial of service critical ubuntu linux kernel

Package Information

https://launchpad.net/ubuntu/+source/linux/3.13.0-96.143

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