Advisory Published

USN-3690-1: AMD Microcode update

First published: Wed Jun 20 2018(Updated: )

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. This update provides the microcode updates for AMD 17H family processors required for the corresponding Linux kernel updates.

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/amd64-microcode<3.20180524.1~ubuntu0.18.04.1
3.20180524.1~ubuntu0.18.04.1
=18.04
All of
ubuntu/amd64-microcode<3.20180524.1~ubuntu0.17.10.1
3.20180524.1~ubuntu0.17.10.1
=17.10
All of
ubuntu/amd64-microcode<3.20180524.1~ubuntu0.16.04.1
3.20180524.1~ubuntu0.16.04.1
=16.04
All of
ubuntu/amd64-microcode<3.20180524.1~ubuntu0.14.04.1
3.20180524.1~ubuntu0.14.04.1
=14.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID for this update?

    The vulnerability ID for this update is CVE-2017-5715.

  • What is the severity of CVE-2017-5715?

    The severity of CVE-2017-5715 is high.

  • How does CVE-2017-5715 affect AMD Microcode?

    CVE-2017-5715 allows unauthorized memory reads via side-channel attacks on microprocessors utilizing speculative execution and branch prediction, potentially exposing sensitive information, including kernel memory.

  • Which versions of Ubuntu are affected by CVE-2017-5715?

    Ubuntu versions 18.04, 17.10, 16.04, and 14.04 are affected by CVE-2017-5715.

  • How can I fix the CVE-2017-5715 vulnerability?

    You can fix the CVE-2017-5715 vulnerability by updating the amd64-microcode package to version 3.20180524.1~ubuntu0.18.04.1 for Ubuntu 18.04, version 3.20180524.1~ubuntu0.17.10.1 for Ubuntu 17.10, version 3.20180524.1~ubuntu0.16.04.1 for Ubuntu 16.04, or version 3.20180524.1~ubuntu0.14.04.1 for Ubuntu 14.04.

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