Advisory Published

USN-3484-1: Linux kernel vulnerability

First published: Tue Nov 21 2017(Updated: )

It was discovered that the KVM subsystem in the Linux kernel did not properly keep track of nested levels in guest page tables. A local attacker in a guest VM could use this to cause a denial of service (host OS crash) or possibly execute arbitrary code in the host OS.

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-4.10.0-40-generic<4.10.0-40.44
4.10.0-40.44
=17.04
All of
ubuntu/linux-image-4.10.0-40-lowlatency<4.10.0-40.44
4.10.0-40.44
=17.04
All of
ubuntu/linux-image-generic<4.10.0.40.40
4.10.0.40.40
=17.04
All of
ubuntu/linux-image-4.10.0-40-generic-lpae<4.10.0-40.44
4.10.0-40.44
=17.04
All of
ubuntu/linux-image-generic-lpae<4.10.0.40.40
4.10.0.40.40
=17.04
All of
ubuntu/linux-image-lowlatency<4.10.0.40.40
4.10.0.40.40
=17.04
All of
ubuntu/linux-image-raspi2<4.10.0.1021.22
4.10.0.1021.22
=17.04
All of
ubuntu/linux-image-4.10.0-1021-raspi2<4.10.0-1021.24
4.10.0-1021.24
=17.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID for the Linux kernel vulnerability?

    The vulnerability ID for the Linux kernel vulnerability is USN-3484-1.

  • What is the impact of the Linux kernel vulnerability?

    The Linux kernel vulnerability can cause a denial of service (host OS crash) or potentially execute arbitrary code in the host OS.

  • Which version of the Linux kernel is affected by the vulnerability?

    The Linux kernel versions 4.10.0-40-generic, 4.10.0-40-lowlatency, 4.10.0.40.40, 4.10.0-40-generic-lpae, 4.10.0.40.40, 4.10.0.40.40, 4.10.0.1021.22, and 4.10.0-1021.24 are affected by the vulnerability.

  • How do I fix the Linux kernel vulnerability?

    To fix the Linux kernel vulnerability, update your Ubuntu system to version 4.10.0-40.44 or later.

  • Where can I find more information about the Linux kernel vulnerability?

    More information about the Linux kernel vulnerability can be found at the following references: [USN-3487-1](https://ubuntu.com/security/notices/USN-3487-1) and [USN-3484-2](https://ubuntu.com/security/notices/USN-3484-2).

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