Advisory Published

USN-2852-1: Linux kernel (Raspberry Pi 2) vulnerability

First published: Sat Dec 19 2015(Updated: )

Jann Horn discovered a ptrace issue with user namespaces in the Linux kernel. The namespace owner could potentially exploit this flaw by ptracing a root owned process entering the user namespace to elevate its privileges and potentially gain access outside of the namespace. (http://bugs.launchpad.net/bugs/1527374, CVE-2015-8709)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-4.2.0-1017-raspi2<4.2.0-1017.24
4.2.0-1017.24
=15.10

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Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID for this Linux kernel vulnerability on Raspberry Pi 2?

    The vulnerability ID is USN-2852-1.

  • What is the impact of the vulnerability?

    The vulnerability allows the namespace owner to potentially elevate privileges and gain access outside of the namespace.

  • Which Linux kernel version is affected by this vulnerability?

    The Linux kernel version 4.2.0-1017.24 on Raspberry Pi 2 is affected.

  • How can I fix this vulnerability?

    Update the Linux kernel to version 4.2.0-1017.24 or later.

  • Where can I find more information about this vulnerability?

    You can find more information about this vulnerability at the following links: [CVE-2015-8709](https://ubuntu.com/security/CVE-2015-8709), [USN-2853-1](https://ubuntu.com/security/notices/USN-2853-1), [USN-2851-1](https://ubuntu.com/security/notices/USN-2851-1).

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