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Vulnerability of Linux kernel: NULL pointer dereference via aiptek_probe

Synthesis of the vulnerability 

An attacker can force a NULL pointer to be dereferenced in the aiptek_probe() function of the Linux kernel, in order to trigger a denial of service.
Impacted systems: Debian, Fedora, Linux, openSUSE, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this alert: 1/4.
Creation date: 16/12/2015.
Références of this alert: CERTFR-2016-AVI-110, CERTFR-2016-AVI-159, CVE-2015-7515, DSA-3607-1, FEDORA-2015-ac9a19888e, FEDORA-2015-c4ed00a68f, openSUSE-SU-2016:2649-1, OS-S 2016-05, SUSE-SU-2016:0911-1, SUSE-SU-2016:1102-1, SUSE-SU-2016:1203-1, SUSE-SU-2016:2074-1, USN-2967-1, USN-2967-2, USN-2968-1, USN-2968-2, USN-2969-1, USN-2970-1, USN-2971-1, USN-2971-2, USN-2971-3, VIGILANCE-VUL-18539.

Description of the vulnerability 

The Linux kernel supports Aiptek products via the drivers/input/tablet/aiptek.c driver.

However, if a malicious Aiptek USB device is plugged, the aiptek_probe() function does not check if a pointer is NULL, before using it.

An attacker can therefore force a NULL pointer to be dereferenced in the aiptek_probe() function of the Linux kernel, in order to trigger a denial of service.
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This computer weakness announce impacts software or systems such as Debian, Fedora, Linux, openSUSE, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this security alert is low.

The trust level is of type confirmed by the editor, with an origin of physical access.

A proof of concept or an attack tool is available, so your teams have to process this alert. An attacker with a technician ability can exploit this vulnerability.

Solutions for this threat 

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

Debian 8: new linux packages.
New packages are available:
  Debian 8: linux 3.16.7-ckt25-2+deb8u2

Fedora: new kernel packages.
New packages are available:
  Fedora 22: kernel 4.2.7-200.fc22
  Fedora 23: kernel 4.2.7-300.fc23

openSUSE 11.4: new kernel packages.
New packages are available:
  openSUSE 11.4: kernel 3.0.101-105.1

SUSE LE 11: new kernel packages.
New packages are available:
  SUSE LE 11 SP4: kernel 3.0.101-71.2

SUSE LE 11 SP2: new kernel packages (16/08/2016).
New packages are available:
  SUSE LE 11 SP2: kernel 3.0.101-0.7.40.1

SUSE LE 11 SP3: new kernel packages (04/05/2016).
New packages are available:
  SUSE LE 11 SP3: kernel 3.0.101-0.47.79.1

SUSE LE 11 SP4: new kernel-rt packages (20/04/2016).
New packages are available:
  SUSE LE 11 SP4: kernel-rt 3.0.101.rt130-51.1

Ubuntu 12.04: new linux-image-3.2.0 packages.
New packages are available:
  Ubuntu 12.04 LTS: linux-image-3.2.0-102-generic 3.2.0-102.142, linux-image-3.2.0-1480-omap4 3.2.0-1480.106

Ubuntu 14.04: new linux-image-3.16.0 packages.
New packages are available:
  Ubuntu 14.04 LTS: linux-image-3.16.0-71-generic 3.16.0-71.91~14.04.1

Ubuntu 14.04: new linux-image-3.19.0 packages.
New packages are available:
  Ubuntu 14.04 LTS: linux-image-3.19.0-59-generic 3.19.0-59.65~14.04.1

Ubuntu: new linux-image-3.13.0 packages.
New packages are available:
  Ubuntu 12.04 LTS: linux-image-3.13.0-86-generic 3.13.0-86.130~precise1
  Ubuntu 14.04 LTS: linux-image-3.13.0-86-generic 3.13.0-86.130

Ubuntu: new linux-image-4.2.0 packages.
New packages are available:
  Ubuntu 14.04 LTS: linux-image-4.2.0-36-generic 4.2.0-36.41~14.04.1
  Ubuntu 15.10: linux-image-4.2.0-36-generic 4.2.0-36.41, linux-image-4.2.0-1029-raspi2 4.2.0-1029.37
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