The Vigil@nce team watches public vulnerabilities impacting your computers, and then offers security solutions, a vigilance database and tools to fix them.

Vulnerability of Linux kernel: memory corruption via double fetches

Synthesis of the vulnerability 

An attacker can generate a memory corruption via a change in pointers between 2 reads by the audio drivers of the Linux kernel, in order to trigger a denial of service, and possibly to run code.
Vulnerable systems: Linux, Ubuntu.
Severity of this threat: 1/4.
Number of vulnerabilities in this bulletin: 2.
Creation date: 29/06/2017.
Références of this weakness: 196133, 196135, CERTFR-2017-AVI-384, CERTFR-2018-AVI-408, CVE-2017-9985, CVE-2017-9986, USN-3469-1, USN-3469-2, USN-3754-1, VIGILANCE-VUL-23102.

Description of the vulnerability 

An attacker can generate a memory corruption via a change in pointers between 2 reads by the audio drivers of the Linux kernel, in order to trigger a denial of service, and possibly to run code.
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This computer weakness bulletin impacts software or systems such as Linux, Ubuntu.

Our Vigil@nce team determined that the severity of this computer threat announce is low.

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

This bulletin is about 2 vulnerabilities.

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

Solutions for this threat 

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

Ubuntu 14.04: new linux-image-3.13.0 packages.
New packages are available:
  Ubuntu 14.04 LTS: linux-image-generic 3.13.0.157.167

Ubuntu: new linux-image-4.4.0 packages.
New packages are available:
  Ubuntu 16.04 LTS: linux-image-generic 4.4.0.98.103
  Ubuntu 14.04 LTS: linux-image-generic-lts-xenial 4.4.0.98.82
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