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Vulnerability of Ubuntu: memory corruption via OverlayFS/ShiftFS AUFS

Synthesis of the vulnerability 

An attacker can trigger a memory corruption via OverlayFS/ShiftFS AUFS of Ubuntu, in order to trigger a denial of service, and possibly to run code.
Vulnerable software: Tivoli Workload Scheduler, Ubuntu.
Severity of this announce: 2/4.
Creation date: 03/12/2019.
Références of this computer vulnerability: 1850994, 6205685, 6205694, 6205697, 6205698, CERTFR-2019-AVI-602, CVE-2019-15794, USN-4208-1, USN-4209-1, VIGILANCE-VUL-31039.

Description of the vulnerability 

An attacker can trigger a memory corruption via OverlayFS/ShiftFS AUFS of Ubuntu, in order to trigger a denial of service, and possibly to run code.
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This vulnerability announce impacts software or systems such as Tivoli Workload Scheduler, Ubuntu.

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

Solutions for this threat 

Ubuntu: new linux-image-5.3.0 packages.
New packages are available:
  Ubuntu 18.04 LTS: linux-image-gcp-edge 5.3.0.1009.9
  Ubuntu 19.10: linux-image-generic 5.3.0.24.28

Ubuntu: new linux-image-5.0.0 packages.
New packages are available:
  Ubuntu 18.04 LTS: linux-image-generic-hwe-18.04 5.0.0.37.95
  Ubuntu 19.04: linux-image-generic 5.0.0.37.39

IBM Workload Scheduler (Ubuntu container): patch IJ24525.
A patch is indicated in information sources.
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