CWE
119
Advisory Published

USN-4393-1: Linux kernel vulnerabilities

First published: Wed 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 SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-3.2.0-147-generic<3.2.0-147.194
3.2.0-147.194
=12.04
All of
ubuntu/linux-image-powerpc-smp<3.2.0.147.161
3.2.0.147.161
=12.04
All of
ubuntu/linux-image-3.2.0-147-powerpc-smp<3.2.0-147.194
3.2.0-147.194
=12.04
All of
ubuntu/linux-image-powerpc<3.2.0.147.161
3.2.0.147.161
=12.04
All of
ubuntu/linux-image-generic<3.2.0.147.161
3.2.0.147.161
=12.04
All of
ubuntu/linux-image-generic-pae<3.2.0.147.161
3.2.0.147.161
=12.04
All of
ubuntu/linux-image-highbank<3.2.0.147.161
3.2.0.147.161
=12.04
All of
ubuntu/linux-image-3.2.0-147-highbank<3.2.0-147.194
3.2.0-147.194
=12.04
All of
ubuntu/linux-image-virtual<3.2.0.147.161
3.2.0.147.161
=12.04
All of
ubuntu/linux-image-3.2.0-147-generic-pae<3.2.0-147.194
3.2.0-147.194
=12.04
All of
ubuntu/linux-image-3.2.0-147-powerpc64-smp<3.2.0-147.194
3.2.0-147.194
=12.04
All of
ubuntu/linux-image-3.2.0-147-virtual<3.2.0-147.194
3.2.0-147.194
=12.04
All of
ubuntu/linux-image-server<3.2.0.147.161
3.2.0.147.161
=12.04
All of
ubuntu/linux-image-powerpc64-smp<3.2.0.147.161
3.2.0.147.161
=12.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-4393-1?

    The severity of USN-4393-1 is moderate.

  • Which software is affected by USN-4393-1?

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

  • 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.

  • 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.

  • How can I fix USN-4393-1?

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

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