Advisory Published

USN-2843-3: Linux kernel (Raspberry Pi 2) vulnerabilities

First published: Thu Dec 17 2015(Updated: )

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) Dmitry Vyukov discovered that the Linux kernel's keyring handler attempted to garbage collect incompletely instantiated keys. A local unprivileged attacker could use this to cause a denial of service (system crash). (CVE-2015-7872) 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-4.2.0-1016-raspi2<4.2.0-1016.23
4.2.0-1016.23
=15.10

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Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID for this Ubuntu security notice?

    The vulnerability ID for this Ubuntu security notice is USN-2843-3.

  • What is the title of this Ubuntu security notice?

    The title of this Ubuntu security notice is 'USN-2843-3: Linux kernel (Raspberry Pi 2) vulnerabilities'.

  • Who discovered the vulnerability in the Linux kernel's ppp implementation?

    郭永刚 discovered the vulnerability in the Linux kernel's ppp implementation.

  • What is the impact of the ppp implementation vulnerability?

    The ppp implementation vulnerability can cause a denial of service (system crash).

  • How can a local attacker exploit the ppp implementation vulnerability?

    A local attacker with the privilege to call ioctl() on /dev/ppp can exploit the ppp implementation vulnerability.

  • What is the vulnerability in the Linux kernel's keyring subsystem?

    The vulnerability in the Linux kernel's keyring subsystem was discovered by Dmitry Vyukov.

  • What is the severity of this vulnerability?

    The severity of this vulnerability is not mentioned in the information provided.

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

    The Linux kernel version 4.2.0-1016.23 (linux-image-4.2.0-1016-raspi2) on Ubuntu 15.10 is affected by this vulnerability.

  • How to fix this vulnerability?

    To fix this vulnerability, update to the version 4.2.0-1016.23 of linux-image-4.2.0-1016-raspi2 package on Ubuntu 15.10.

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