USN-4188-1: Linux kernel vulnerability

Published Nov 13, 2019
·
Updated

Stephan van Schaik, Alyssa Milburn, Sebastian Österlund, Pietro Frigo, Kaveh Razavi, Herbert Bos, Cristiano Giuffrida, Giorgi Maisuradze, Moritz Lipp, Michael Schwarz, Daniel Gruss, and Jo Van Bulck discovered that Intel processors using Transactional Synchronization Extensions (TSX) could expose memory contents previously stored in microarchitectural buffers to a malicious process that is executing on the same CPU core. A local attacker could use this to expose sensitive information.

Affected Software

24 affected componentsFixes available
All of the following
ubuntu/linux-image-server<3.2.0.144.159
3.2.0.144.159
Ubuntu Ubuntu=12.04
All of the following
ubuntu/linux-image-3.13.0-175-generic-lpae<3.13.0-175.226~12.04.1
3.13.0-175.226~12.04.1
Ubuntu Ubuntu=12.04
All of the following
ubuntu/linux-image-3.2.0-144-generic-pae<3.2.0-144.191
3.2.0-144.191
Ubuntu Ubuntu=12.04
All of the following
ubuntu/linux-image-3.13.0-175-generic<3.13.0-175.226~12.04.1
3.13.0-175.226~12.04.1
Ubuntu Ubuntu=12.04
All of the following
ubuntu/linux-image-generic<3.2.0.144.159
3.2.0.144.159
Ubuntu Ubuntu=12.04
All of the following
ubuntu/linux-image-3.13.0-175-lowlatency<3.13.0-175.226~12.04.1
3.13.0-175.226~12.04.1
Ubuntu Ubuntu=12.04
All of the following
ubuntu/linux-image-3.2.0-144-virtual<3.2.0-144.191
3.2.0-144.191
Ubuntu Ubuntu=12.04
All of the following
ubuntu/linux-image-generic-lpae-lts-trusty<3.13.0.175.163
3.13.0.175.163
Ubuntu Ubuntu=12.04
All of the following
ubuntu/linux-image-virtual<3.2.0.144.159
3.2.0.144.159
Ubuntu Ubuntu=12.04
All of the following
ubuntu/linux-image-generic-lts-trusty<3.13.0.175.163
3.13.0.175.163
Ubuntu Ubuntu=12.04
All of the following
ubuntu/linux-image-generic-pae<3.2.0.144.159
3.2.0.144.159
Ubuntu Ubuntu=12.04
All of the following
ubuntu/linux-image-3.2.0-144-generic<3.2.0-144.191
3.2.0-144.191
Ubuntu Ubuntu=12.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/linux-image-server to a version that resolves this vulnerability.

    Fixed in 3.2.0.144.159
  2. Upgrade

    Upgrade ubuntu/linux-image-3.13.0-175-generic-lpae to a version that resolves this vulnerability.

    Fixed in 3.13.0-175.226~12.04.1
  3. Upgrade

    Upgrade ubuntu/linux-image-3.2.0-144-generic-pae to a version that resolves this vulnerability.

    Fixed in 3.2.0-144.191
  4. Upgrade

    Upgrade ubuntu/linux-image-3.13.0-175-generic to a version that resolves this vulnerability.

    Fixed in 3.13.0-175.226~12.04.1
  5. Upgrade

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

    Fixed in 3.2.0.144.159
  6. Upgrade

    Upgrade ubuntu/linux-image-3.13.0-175-lowlatency to a version that resolves this vulnerability.

    Fixed in 3.13.0-175.226~12.04.1
  7. Upgrade

    Upgrade ubuntu/linux-image-3.2.0-144-virtual to a version that resolves this vulnerability.

    Fixed in 3.2.0-144.191
  8. Upgrade

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

    Fixed in 3.13.0.175.163
  9. Upgrade

    Upgrade ubuntu/linux-image-virtual to a version that resolves this vulnerability.

    Fixed in 3.2.0.144.159
  10. Upgrade

    Upgrade ubuntu/linux-image-generic-lts-trusty to a version that resolves this vulnerability.

    Fixed in 3.13.0.175.163
  11. Upgrade

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

    Fixed in 3.2.0.144.159
  12. Upgrade

    Upgrade ubuntu/linux-image-3.2.0-144-generic to a version that resolves this vulnerability.

    Fixed in 3.2.0-144.191

Event History

Nov 13, 2019
Advisory Published
via Ubuntu·12:00 AM

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

1

What is the vulnerability ID for this Linux kernel vulnerability?

The vulnerability ID for this Linux kernel vulnerability is USN-4188-1.

2

What is the severity of the USN-4188-1 vulnerability?

The severity of the USN-4188-1 vulnerability is not specified in the provided information.

3

How does the USN-4188-1 vulnerability affect Ubuntu 12.04?

The USN-4188-1 vulnerability affects Ubuntu 12.04.

4

What is the remedy for the USN-4188-1 vulnerability?

The remedy for the USN-4188-1 vulnerability is to update the Linux kernel to the specified versions.

5

Are there any additional references for the USN-4188-1 vulnerability?

Yes, there are additional references available for the USN-4188-1 vulnerability. Please refer to the provided links for more information.

Company

Resources

Contact

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