Advisory Published

USN-2842-1: Linux kernel vulnerabilities

First published: Thu Dec 17 2015(Updated: )

Jan Beulich discovered that the KVM svm hypervisor implementation in the Linux kernel did not properly catch Debug exceptions on AMD processors. An attacker in a guest virtual machine could use this to cause a denial of service (system crash) in the host OS. (CVE-2015-8104) 郭永刚 discovered that the ppp implementation in the Linux kernel did not ensure that certain slot numbers are valid. A local attacker with the privilege to call ioctl() on /dev/ppp could cause a denial of service (system crash). (CVE-2015-7799) It was discovered that the virtual video osd test driver in the Linux kernel did not properly initialize data structures. A local attacker could use this to obtain sensitive information from the kernel. (CVE-2015-7884) It was discovered that the driver for Digi Neo and ClassicBoard devices did not properly initialize data structures. A local attacker could use this to obtain sensitive information from the kernel. (CVE-2015-7885)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-3.19.0-41-powerpc64-emb<3.19.0-41.46
3.19.0-41.46
Ubuntu Ubuntu=15.04
All of
ubuntu/linux-image-3.19.0-41-generic<3.19.0-41.46
3.19.0-41.46
Ubuntu Ubuntu=15.04
All of
ubuntu/linux-image-3.19.0-41-powerpc64-smp<3.19.0-41.46
3.19.0-41.46
Ubuntu Ubuntu=15.04
All of
ubuntu/linux-image-3.19.0-41-powerpc-e500mc<3.19.0-41.46
3.19.0-41.46
Ubuntu Ubuntu=15.04
All of
ubuntu/linux-image-3.19.0-41-lowlatency<3.19.0-41.46
3.19.0-41.46
Ubuntu Ubuntu=15.04
All of
ubuntu/linux-image-3.19.0-41-powerpc-smp<3.19.0-41.46
3.19.0-41.46
Ubuntu Ubuntu=15.04
All of
ubuntu/linux-image-3.19.0-41-generic-lpae<3.19.0-41.46
3.19.0-41.46
Ubuntu Ubuntu=15.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

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

    The vulnerability ID for this Linux kernel vulnerability is CVE-2015-8104.

  • What is the severity of this Linux kernel vulnerability?

    The severity of this Linux kernel vulnerability is not specified.

  • How can an attacker exploit this vulnerability in a guest virtual machine?

    An attacker in a guest virtual machine can exploit this vulnerability to cause a denial of service (system crash) in the host OS.

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

    The Linux kernel versions affected by this vulnerability are 3.19.0-41.46.

  • How do I fix this Linux kernel vulnerability?

    To fix this Linux kernel vulnerability, update to version 3.19.0-41.46 or later.

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