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Vulnerability of Linux kernel: information disclosure via random32

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data via random32 of the Linux kernel, in order to obtain sensitive information.
Impacted systems: Debian, Fedora, Linux, openSUSE Leap, RHEL, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this alert: 1/4.
Creation date: 31/07/2020.
Références of this alert: CERTFR-2020-AVI-547, CERTFR-2020-AVI-548, CERTFR-2020-AVI-553, CERTFR-2020-AVI-568, CERTFR-2020-AVI-574, CERTFR-2020-AVI-585, CERTFR-2020-AVI-614, CVE-2020-16166, DLA-2385-1, FEDORA-2020-2cd6393548, FEDORA-2020-8d634e31c0, openSUSE-SU-2020:1153-1, openSUSE-SU-2020:1236-1, RHSA-2020:4279-01, SSA:2020-295-01, SUSE-SU-2020:2485-1, SUSE-SU-2020:2486-1, SUSE-SU-2020:2540-1, SUSE-SU-2020:2541-1, SUSE-SU-2020:2574-1, SUSE-SU-2020:2575-1, SUSE-SU-2020:2576-1, SUSE-SU-2020:2582-1, SUSE-SU-2020:2605-1, SUSE-SU-2020:2610-1, SUSE-SU-2020:2623-1, SUSE-SU-2020:2631-1, USN-4525-1, USN-4526-1, VIGILANCE-VUL-32981.

Description of the vulnerability 

An attacker can bypass access restrictions to data via random32 of the Linux kernel, in order to obtain sensitive information.
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This computer threat note impacts software or systems such as Debian, Fedora, Linux, openSUSE Leap, RHEL, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

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

Solutions for this threat 

Linux kernel: version 5.7.14.
The version 5.7.14 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 5.4.57.
The version 5.4.57 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 4.19.138.
The version 4.19.138 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.14.193.
The version 4.14.193 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.9.233.
The version 4.9.233 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.4.233.
The version 4.4.233 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: patch for random32.
A patch is indicated in information sources.

Debian 9: new linux-4.19 packages.
New packages are available:
  Debian 9: linux-4.19 4.19.146-1~deb9u1

Fedora 31: new kernel packages.
New packages are available:
  Fedora 31: kernel 5.7.15-100.fc31

Fedora 32: new kernel packages.
New packages are available:
  Fedora 32: kernel 5.7.14-200.fc32

openSUSE Leap 15.1: new kernel packages (07/08/2020).
New packages are available:
  openSUSE Leap 15.1: kernel 4.12.14-lp151.28.59.1

openSUSE Leap 15.2: new kernel packages.
New packages are available:
  openSUSE Leap 15.2: kernel 5.3.18-lp152.36.1

RHEL 7: new kernel-alt packages.
New packages are available:
  RHEL 7.0-7.9: kernel-alt 4.14.0-115.32.1.el7a

Slackware 14.2: new kernel packages (22/10/2020).
New packages are available:
  Slackware 14.2: kernel 4.4.240-i586-1

SUSE LE 12 SP2: new kernel packages.
New packages are available:
  SUSE LE 12 SP2: kernel 4.4.121-92.141.1

SUSE LE 12 SP3: new kernel packages.
New packages are available:
  SUSE LE 12 SP3: kernel 4.4.180-94.130.1

SUSE LE 12 SP4: new kernel packages.
New packages are available:
  SUSE LE 12 SP4: kernel 4.12.14-95.60.1

SUSE LE 12 SP5: new kernel-azure packages (07/09/2020).
New packages are available:
  SUSE LE 12 SP5: kernel-azure 4.12.14-16.25.1

SUSE LE 12 SP5: new kernel packages (08/09/2020).
New packages are available:
  SUSE LE 12 SP5: kernel 4.12.14-122.37.1

SUSE LE 12 SP5: new kernel-rt packages.
New packages are available:
  SUSE LE 12 SP5: kernel-rt 4.12.14-10.16.1

SUSE LE 15 RTM: new kernel packages.
New packages are available:
  SUSE LE 15 RTM: kernel 4.12.14-150.58.1

SUSE LE 15 SP1: new kernel-azure packages.
New packages are available:
  SUSE LE 15 SP1: kernel-azure 4.12.14-8.41.1

SUSE LE 15 SP1: new kernel packages.
New packages are available:
  SUSE LE 15 SP1: kernel 4.12.14-197.56.1

SUSE LE 15 SP1: new kernel-rt packages.
New packages are available:
  SUSE LE 15 SP1: kernel-rt 4.12.14-14.31.1

SUSE LE 15 SP2: new kernel packages.
New packages are available:
  SUSE LE 15 SP2: kernel 5.3.18-24.12.1

Ubuntu 20.04: new linux-image-5.4.0 packages.
New packages are available:
  Ubuntu 20.04 LTS: linux-image-5.4.0-48-generic 5.4.0-48.52

Ubuntu: new linux-image-4.15.0 packages (22/09/2020).
New packages are available:
  Ubuntu 18.04 LTS: linux-image-4.15.0-118-generic 4.15.0-118.119
  Ubuntu 16.04 LTS: linux-image-generic-hwe-16.04 4.15.0.118.119
  Ubuntu 14.04 ESM: linux-image-4.15.0-1096-azure 4.15.0-1096.106~14.04.1
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