USN-3630-2: Linux kernel (HWE) vulnerability

Published Apr 24, 2018
·
Updated

USN-3630-1 fixed a vulnerability in the Linux kernel for Ubuntu 17.10. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 17.10 for Ubuntu 16.04 LTS. It was discovered that the Broadcom UniMAC MDIO bus controller driver in the Linux kernel did not properly validate device resources. A local attacker could use this to cause a denial of service (system crash).

Affected Software

11 affected componentsFixes available
Ubuntu Linux kernel (HWE)
All of the following
ubuntu/linux-image-4.13.0-1013-gcp<4.13.0-1013.17
4.13.0-1013.17
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-4.13.0-1024-oem<4.13.0-1024.27
4.13.0-1024.27
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-4.13.0-39-generic<4.13.0-39.44~16.04.1
4.13.0-39.44~16.04.1
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-4.13.0-39-generic-lpae<4.13.0-39.44~16.04.1
4.13.0-39.44~16.04.1
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-4.13.0-39-lowlatency<4.13.0-39.44~16.04.1
4.13.0-39.44~16.04.1
Ubuntu Ubuntu=16.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/linux-image-4.13.0-1013-gcp to a version that resolves this vulnerability.

    Fixed in 4.13.0-1013.17
  2. Upgrade

    Upgrade ubuntu/linux-image-4.13.0-1024-oem to a version that resolves this vulnerability.

    Fixed in 4.13.0-1024.27
  3. Upgrade

    Upgrade ubuntu/linux-image-4.13.0-39-generic to a version that resolves this vulnerability.

    Fixed in 4.13.0-39.44~16.04.1
  4. Upgrade

    Upgrade ubuntu/linux-image-4.13.0-39-generic-lpae to a version that resolves this vulnerability.

    Fixed in 4.13.0-39.44~16.04.1
  5. Upgrade

    Upgrade ubuntu/linux-image-4.13.0-39-lowlatency to a version that resolves this vulnerability.

    Fixed in 4.13.0-39.44~16.04.1
  6. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Patch USN-3630-2

Event History

Apr 24, 2018
Advisory Published
via Ubuntu·12:00 AM
Data Sourced
via Ubuntu·12:00 AM
DescriptionAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

1

What is the vulnerability ID for this Linux kernel (HWE) vulnerability?

The vulnerability ID for this Linux kernel (HWE) vulnerability is USN-3630-2.

2

What is the affected software for this vulnerability?

The affected software for this vulnerability is Ubuntu 16.04 LTS with Linux kernel versions 4.13.0-1013.17, 4.13.0-1024.27, 4.13.0-39.44~16.04.1.

3

What is the severity of the Linux kernel (HWE) vulnerability?

The severity of the Linux kernel (HWE) vulnerability is not specified.

4

How do I fix the Linux kernel (HWE) vulnerability?

To fix the Linux kernel (HWE) vulnerability, update the Linux kernel to versions 4.13.0-1013.17, 4.13.0-1024.27, 4.13.0-39.44~16.04.1 or later.

5

Where can I find more information about the Linux kernel (HWE) vulnerability?

You can find more information about the Linux kernel (HWE) vulnerability on Ubuntu's security website.

Company

Resources

Contact

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