1. Ubuntu Security Notices
  2. USN-3531-3

USN-3531-3: intel-microcode update

Publication date

29 March 2018

Overview

The system could be made to expose sensitive information.

Releases

Packages

Details

Jann Horn discovered that microprocessors utilizing speculative execution
and branch prediction may allow unauthorized memory reads via sidechannel
attacks. This flaw is known as Spectre. A local attacker could use this to
expose sensitive information, including kernel memory. (CVE-2017-5715)

This update provides the corrected microcode updates required for the
corresponding Linux kernel updates.

Jann Horn discovered that microprocessors utilizing speculative execution
and branch prediction may allow unauthorized memory reads via sidechannel
attacks. This flaw is known as Spectre. A local attacker could use this to
expose sensitive information, including kernel memory. (CVE-2017-5715)

This update provides the corrected microcode updates required for the
corresponding Linux kernel updates.

Update instructions

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
17.10 artful intel-microcode –  3.20180312.0~ubuntu17.10.1
16.04 xenial intel-microcode –  3.20180312.0~ubuntu16.04.1
14.04 trusty intel-microcode –  3.20180312.0~ubuntu14.04.1

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References

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