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Vulnerability of Linux kernel: memory leak via netdev_register_kobject

Synthesis of the vulnerability 

An attacker can create a memory leak via netdev_register_kobject() of the Linux kernel, in order to trigger a denial of service.
Vulnerable products: Linux, openSUSE Leap, RHEL, SIMATIC, SUSE Linux Enterprise Desktop, SLES.
Severity of this weakness: 1/4.
Creation date: 09/12/2019.
Références of this bulletin: CERTFR-2019-AVI-612, CERTFR-2019-AVI-635, CERTFR-2019-AVI-639, CERTFR-2019-AVI-652, CERTFR-2020-AVI-029, CERTFR-2020-AVI-147, CERTFR-2020-AVI-180, CERTFR-2020-AVI-260, CVE-2019-15916, openSUSE-SU-2019:2675-1, RHSA-2019:3309-01, RHSA-2019:3517-01, RHSA-2020:0740-01, RHSA-2020:1016-01, RHSA-2020:1070-01, SSB-439005, SUSE-SU-2019:3200-1, SUSE-SU-2019:3289-1, SUSE-SU-2019:3294-1, SUSE-SU-2019:3295-1, SUSE-SU-2019:3316-1, SUSE-SU-2019:3317-1, SUSE-SU-2019:3371-1, SUSE-SU-2019:3372-1, SUSE-SU-2019:3381-1, SUSE-SU-2020:0093-1, SUSE-SU-2020:14354-1, VIGILANCE-VUL-31092.

Description of the vulnerability 

An attacker can create a memory leak via netdev_register_kobject() of the Linux kernel, in order to trigger a denial of service.
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This weakness alert impacts software or systems such as Linux, openSUSE Leap, RHEL, SIMATIC, SUSE Linux Enterprise Desktop, SLES.

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

Solutions for this threat 

Linux kernel: version 5.0.1.
The version 5.0.1 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 4.20.15.
The version 4.20.15 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.19.28.
The version 4.19.28 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

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

openSUSE Leap 15.1: new kernel packages (13/12/2019).
New packages are available:
  openSUSE Leap 15.1: kernel 4.12.14-lp151.28.36.1

RHEL 7.7: new kernel-alt packages.
New packages are available:
  RHEL 7.0-7.7: kernel-alt 4.14.0-115.18.1.el7a

RHEL 7: new kernel packages (01/04/2020).
New packages are available:
  RHEL 7.0-7.7: kernel 3.10.0-1127.el7

RHEL 7: new kernel-rt packages (01/04/2020).
New packages are available:
  RHEL 7.0-7.7: kernel-rt 3.10.0-1127.rt56.1093.el7

RHEL 8: new kernel packages.
New packages are available:
  RHEL 8: kernel 4.18.0-147.el8

RHEL 8: new kernel-rt packages.
New packages are available:
  RHEL 8: kernel-rt 4.18.0-147.rt24.93.el8

SIMATIC S7-1500 CPU 1518: workaround for GNU/Linux Vulnerabilities.
A workaround is indicated in the information source.

SUSE LE 11 SP4: new kernel packages.
New packages are available:
  SUSE LE 11 SP4: kernel 3.0.101-108.111.1

SUSE LE 12 SP4: new kernel-azure packages (18/12/2019).
New packages are available:
  SUSE LE 12 SP4: kernel-azure 4.12.14-6.34.1

SUSE LE 12 SP4: new kernel packages (20/12/2019).
New packages are available:
  SUSE LE 12 SP4: kernel 4.12.14-95.45.1

SUSE LE 12 SP4: new kernel-rt packages.
New packages are available:
  SUSE LE 12 SP4: kernel-rt 4.12.14-8.9.3

SUSE LE 12 SP5: new kernel-azure packages (15/01/2020).
New packages are available:
  SUSE LE 12 SP5: kernel-azure 4.12.14-16.7.1

SUSE LE 12 SP5: new kernel packages (09/12/2019).
New packages are available:
  SUSE LE 12 SP5: kernel 4.12.14-122.7.1

SUSE LE 15 RTM: new kernel-azure packages (13/12/2019).
New packages are available:
  SUSE LE 15 RTM: kernel-azure 4.12.14-5.47.1

SUSE LE 15 RTM: new kernel packages (23/12/2019).
New packages are available:
  SUSE LE 15 RTM: kernel 4.12.14-150.47.1

SUSE LE 15 SP1: new kernel-azure packages (20/12/2019).
New packages are available:
  SUSE LE 15 SP1: kernel-azure 4.12.14-8.22.1

SUSE LE 15 SP1: new kernel packages (18/12/2019).
New packages are available:
  SUSE LE 15 SP1: kernel 4.12.14-197.29.1

SUSE LE 15 SP1: new kernel-rt packages.
New packages are available:
  SUSE LE 15 SP1: kernel-rt 4.12.14-14.14.3

Wind River Linux: version 10.18.44.11.
The version 10.18.44.11 is fixed:
  https://support2.windriver.com/
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