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Ubuntu 16.04 LTS USN-3443-3: linux-gcp Critical Denial Of Service

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Calendar Grey October 11, 2017
Scroller Ubuntu
Ubuntu Security Notice USN-3456-4 highlights a severe linux-aws vulnerability leading to potential data leaks; immediate patches required.
The system could be made to crash under certain conditions.

Summary

The system could be made to crash under certain conditions.

Software Description:

- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems

Details:

Andrey Konovalov discovered that a divide-by-zero error existed in the TCP

stack implementation in the Linux kernel. A local attacker could use this

to cause a denial of service (system crash). (CVE-2017-14106)

Topics%20covered

Topics Covered

security advisory denial of service update instructions ubuntu system crash linux-gcp

Update Instructions

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

Ubuntu 16.04 LTS:
  linux-image-4.10.0-1007-gcp     4.10.0-1007.7
  linux-image-gcp                 4.10.0.1007.9

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-3443-3

https://ubuntu.com/security/notices/USN-3443-1

CVE-2017-14106

Severity
critical
Lowest
Low
Medium
High
Critical

October 11, 2017

Topics%20covered

Topics Covered

security advisory denial of service update instructions ubuntu system crash linux-gcp

Package Information

https://launchpad.net/ubuntu/+source/linux-gcp/4.10.0-1007.7

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