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Vulnerability of Linux kernel: memory leak via sof_set_get_large_ctrl_data

Synthesis of the vulnerability 

An attacker can create a memory leak via sof_set_get_large_ctrl_data() of the Linux kernel, in order to trigger a denial of service.
Vulnerable software: Fedora, Linux, Ubuntu.
Severity of this announce: 1/4.
Creation date: 08/11/2019.
Références of this computer vulnerability: CERTFR-2020-AVI-096, CVE-2019-18811, FEDORA-2019-124a241044, FEDORA-2019-b86a7bdba0, USN-4284-1, VIGILANCE-VUL-30817.

Description of the vulnerability 

An attacker can create a memory leak via sof_set_get_large_ctrl_data() of the Linux kernel, in order to trigger a denial of service.
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This vulnerability note impacts software or systems such as Fedora, Linux, Ubuntu.

Our Vigil@nce team determined that the severity of this cybersecurity vulnerability 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 computer threat note.

Solutions for this threat 

Linux kernel: version 5.3.15.
The version 5.3.15 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

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

Fedora 30: new kernel packages.
New packages are available:
  Fedora 30: kernel 5.3.14-200.fc30

Fedora 31: new kernel packages.
New packages are available:
  Fedora 31: kernel 5.3.14-300.fc31

Ubuntu: new linux-image-5.3.0 packages (19/02/2020).
New packages are available:
  Ubuntu 19.10: linux-image-generic 5.3.0.40.34
  Ubuntu 18.04 LTS: linux-image-generic-hwe-18.04 5.3.0.40.97

Wind River Linux: version 10.19.45.2.
The version 10.19.45.2 is fixed:
  https://support2.windriver.com/
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