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Vulnerability of Linux kernel: privilege escalation via SELinux/netlink

Synthesis of the vulnerability 

An attacker can bypass restrictions via SELinux/netlink of the Linux kernel, in order to escalate his privileges.
Impacted products: Linux.
Severity of this bulletin: 2/4.
Creation date: 01/05/2020.
Références of this threat: VIGILANCE-VUL-32163.

Description of the vulnerability 

An attacker can bypass restrictions via SELinux/netlink of the Linux kernel, in order to escalate his privileges.
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This security vulnerability impacts software or systems such as Linux.

Our Vigil@nce team determined that the severity of this computer weakness 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 security note.

Solutions for this threat 

Linux kernel: version 5.6.11.
The version 5.6.11 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.6.11.tar.xz

Linux kernel: version 5.4.39.
The version 5.4.39 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.39.tar.xz

Linux kernel: version 4.19.121.
The version 4.19.121 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.19.121.tar.xz

Linux kernel: version 4.14.179.
The version 4.14.179 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.14.179.tar.xz

Linux kernel: version 4.9.222.
The version 4.9.222 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.9.222.tar.xz

Linux kernel: version 4.4.222.
The version 4.4.222 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.4.222.tar.xz

Linux kernel: version 3.16.85.
The version 3.16.85 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v3.x/

Linux kernel: patch for SELinux/netlink.
A patch is indicated in information sources.
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