USN-4393-1: Linux kernel vulnerabilities

Published Jun 10, 2020
·
Updated

It was discovered that the Marvell WiFi-Ex Driver in the Linux kernel did not properly validate status lengths in messages received from an access point, leading to a buffer overflow. A physically proximate attacker controlling an access point could use this to construct messages that could possibly result in arbitrary code execution. (CVE-2020-12654) It was discovered that memory contents previously stored in microarchitectural special registers after RDRAND, RDSEED, and SGX EGETKEY read operations on Intel client and Xeon E3 processors may be briefly exposed to processes on the same or different processor cores. A local attacker could use this to expose sensitive information. (CVE-2020-0543)

Affected Software

29 affected componentsFixes available
Ubuntu Linux kernel
All of the following
ubuntu/linux-image-3.2.0-147-generic<3.2.0-147.194
3.2.0-147.194
Ubuntu Ubuntu=12.04
All of the following
ubuntu/linux-image-powerpc-smp<3.2.0.147.161
3.2.0.147.161
Ubuntu Ubuntu=12.04
All of the following
ubuntu/linux-image-3.2.0-147-powerpc-smp<3.2.0-147.194
3.2.0-147.194
Ubuntu Ubuntu=12.04
All of the following
ubuntu/linux-image-powerpc<3.2.0.147.161
3.2.0.147.161
Ubuntu Ubuntu=12.04
All of the following
ubuntu/linux-image-generic<3.2.0.147.161
3.2.0.147.161
Ubuntu Ubuntu=12.04
All of the following
ubuntu/linux-image-generic-pae<3.2.0.147.161
3.2.0.147.161
Ubuntu Ubuntu=12.04
All of the following
ubuntu/linux-image-highbank<3.2.0.147.161
3.2.0.147.161
Ubuntu Ubuntu=12.04
All of the following
ubuntu/linux-image-3.2.0-147-highbank<3.2.0-147.194
3.2.0-147.194
Ubuntu Ubuntu=12.04
All of the following
ubuntu/linux-image-virtual<3.2.0.147.161
3.2.0.147.161
Ubuntu Ubuntu=12.04
All of the following
ubuntu/linux-image-3.2.0-147-generic-pae<3.2.0-147.194
3.2.0-147.194
Ubuntu Ubuntu=12.04
All of the following
ubuntu/linux-image-3.2.0-147-powerpc64-smp<3.2.0-147.194
3.2.0-147.194
Ubuntu Ubuntu=12.04
All of the following
ubuntu/linux-image-3.2.0-147-virtual<3.2.0-147.194
3.2.0-147.194
Ubuntu Ubuntu=12.04
All of the following
ubuntu/linux-image-server<3.2.0.147.161
3.2.0.147.161
Ubuntu Ubuntu=12.04
All of the following
ubuntu/linux-image-powerpc64-smp<3.2.0.147.161
3.2.0.147.161
Ubuntu Ubuntu=12.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/linux-image-3.2.0-147-generic to a version that resolves this vulnerability.

    Fixed in 3.2.0-147.194
  2. Upgrade

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

    Fixed in 3.2.0.147.161
  3. Upgrade

    Upgrade ubuntu/linux-image-3.2.0-147-powerpc-smp to a version that resolves this vulnerability.

    Fixed in 3.2.0-147.194
  4. Upgrade

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

    Fixed in 3.2.0.147.161
  5. Upgrade

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

    Fixed in 3.2.0.147.161
  6. Upgrade

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

    Fixed in 3.2.0.147.161
  7. Upgrade

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

    Fixed in 3.2.0.147.161
  8. Upgrade

    Upgrade ubuntu/linux-image-3.2.0-147-highbank to a version that resolves this vulnerability.

    Fixed in 3.2.0-147.194
  9. Upgrade

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

    Fixed in 3.2.0.147.161
  10. Upgrade

    Upgrade ubuntu/linux-image-3.2.0-147-generic-pae to a version that resolves this vulnerability.

    Fixed in 3.2.0-147.194
  11. Upgrade

    Upgrade ubuntu/linux-image-3.2.0-147-powerpc64-smp to a version that resolves this vulnerability.

    Fixed in 3.2.0-147.194
  12. Upgrade

    Upgrade ubuntu/linux-image-3.2.0-147-virtual to a version that resolves this vulnerability.

    Fixed in 3.2.0-147.194
  13. Upgrade

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

    Fixed in 3.2.0.147.161
  14. Upgrade

    Upgrade ubuntu/linux-image-powerpc64-smp to a version that resolves this vulnerability.

    Fixed in 3.2.0.147.161

Event History

Jun 10, 2020
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 severity of USN-4393-1?

The severity of USN-4393-1 is moderate.

2

Which software is affected by USN-4393-1?

Ubuntu Linux 12.04 with specific kernel versions is affected by USN-4393-1.

3

What is the vulnerability description of USN-4393-1?

USN-4393-1 describes a buffer overflow vulnerability in the Marvell WiFi-Ex Driver in the Linux kernel.

4

How can a physically proximate attacker exploit USN-4393-1?

A physically proximate attacker controlling an access point could construct malicious messages to trigger the buffer overflow.

5

How can I fix USN-4393-1?

To fix USN-4393-1, update the affected Linux kernel packages to the recommended versions.

Company

Resources

Contact

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