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Vulnerability of Linux kernel: use after free via fanout_add

Synthesis of the vulnerability 

An attacker can force the usage of a freed memory area via fanout_add() on the Linux kernel, in order to trigger a denial of service, and possibly to run code.
Impacted systems: Debian, BIG-IP Hardware, TMOS, Android OS, Linux, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this alert: 2/4.
Creation date: 01/03/2017.
Références of this alert: CERTFR-2017-AVI-128, CERTFR-2017-AVI-141, CERTFR-2017-AVI-162, CERTFR-2017-AVI-307, CVE-2017-6346, DLA-849-1, DSA-3804-1, K11023978, openSUSE-SU-2017:0906-1, openSUSE-SU-2017:0907-1, SUSE-SU-2017:1183-1, SUSE-SU-2017:1247-1, SUSE-SU-2017:1360-1, SUSE-SU-2017:1990-1, USN-3265-1, USN-3265-2, USN-3361-1, USN-3422-1, USN-3422-2, VIGILANCE-VUL-21989.

Description of the vulnerability 

An attacker can force the usage of a freed memory area via fanout_add() on the Linux kernel, in order to trigger a denial of service, and possibly to run code.
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This computer weakness note impacts software or systems such as Debian, BIG-IP Hardware, TMOS, Android OS, Linux, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this security bulletin is medium.

The trust level is of type confirmed by the editor, with an origin of user shell.

An attacker with a expert ability can exploit this weakness announce.

Solutions for this threat 

Linux kernel: version 4.1.49.
The version 4.1.49 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.1.49.tar.xz

Linux kernel: version 3.16.42.
The version 3.16.42 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v3.x/

Linux kernel: version 3.12.71.
The version 3.12.71 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v3.x/

Linux kernel: version 3.10.106.
The version 3.10.106 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v3.x/linux-3.10.106.tar.xz

Linux kernel: version 3.2.87.
The version 3.2.87 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v3.x/

Linux kernel: patch for fanout_add.
A patch is indicated in information sources.

Android OS: patches 2017-09-01 and 2017-09-05.
A patch is indicated in information sources.

Debian 7: new linux packages.
New packages are available:
  Debian 7: linux 3.2.86-1

Debian 8: new linux packages.
New packages are available:
  Debian 8: linux 3.16.39-1+deb8u2

F5 BIG-IP: solution for Linux.
The solution is indicated in information sources.

openSUSE Leap 42.1: new kernel packages.
New packages are available:
  openSUSE Leap 42.1: kernel 4.1.39-53.1

openSUSE Leap 42.2: new kernel packages.
New packages are available:
  openSUSE Leap 42.2: kernel 4.4.57-18.3.1

SUSE LE 12 RTM: new kernel packages.
New packages are available:
  SUSE LE 12 RTM: kernel 3.12.61-52.72.1

SUSE LE 12 SP1: new kernel packages.
New packages are available:
  SUSE LE 12 SP1: kernel 3.12.74-60.64.40.1

SUSE LE 12 SP2: new kernel packages.
New packages are available:
  SUSE LE 12 SP2: kernel 4.4.59-92.17.3

SUSE LE 12 SP2: new kernel-rt packages (28/07/2017).
New packages are available:
  SUSE LE 12 SP2: kernel-rt 4.4.74-7.10.1

Ubuntu 16.04: new linux-image-generic packages (21/07/2017).
New packages are available:
  Ubuntu 16.04 LTS: linux-image-generic 4.10.0.27.30

Ubuntu: new linux-image-3.13.0 packages.
New packages are available:
  Ubuntu 12.04 ESM: linux-image-3.13.0-132-generic 3.13.0-132.181~precise1
  Ubuntu 14.04 LTS: linux-image-3.13.0-132-generic 3.13.0-132.181

Ubuntu: new linux-image-generic 4.4 packages.
New packages are available:
  Ubuntu 14.04 LTS: linux-image-generic-lts-xenial 4.4.0.75.62
  Ubuntu 16.04 LTS: linux-image-generic 4.4.0.75.81
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