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Vulnerability of Linux kernel: denial of service via Namespace Mountpoint Reference Counter Race

Synthesis of the vulnerability 

An attacker can trigger a fatal error via Namespace Mountpoint Reference Counter Race of the Linux kernel, in order to trigger a denial of service.
Vulnerable systems: Linux.
Severity of this threat: 1/4.
Creation date: 04/05/2020.
Références of this weakness: CVE-2020-12114, VIGILANCE-VUL-32174.

Description of the vulnerability 

An attacker can trigger a fatal error via Namespace Mountpoint Reference Counter Race of the Linux kernel, in order to trigger a denial of service.
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This threat announce impacts software or systems such as Linux.

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

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 security alert.

Solutions for this threat 

Linux kernel: version 4.19.119.
The version 4.19.119 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.19.119.tar.xz

Linux kernel: version 4.14.178.
The version 4.14.178 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.9.221.
The version 4.9.221 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.4.221.
The version 4.4.221 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 3.16.84.
The version 3.16.84 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v3.x/

Linux kernel: patch for Namespace Mountpoint Reference Counter Race.
A patch is indicated in information sources.

Wind River Linux: version 10.18.44.17.
The version 10.18.44.17 is fixed:
  https://support2.windriver.com/
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