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Vulnerability of D-Bus: denial of service via File Descriptor Leak

Synthesis of the vulnerability 

An attacker can trigger a fatal error via File Descriptor Leak of D-Bus, in order to trigger a denial of service.
Impacted software: Debian, Fedora, RHEL, Ubuntu.
Severity of this computer vulnerability: 1/4.
Creation date: 05/06/2020.
Références of this announce: CVE-2020-12049, DLA-2235-1, FEDORA-2020-5a1910208c, FEDORA-2020-99ee5a2baa, RHSA-2020:2894-01, RHSA-2020:3014-01, RHSA-2020:3044-01, RHSA-2020:3298-01, USN-4398-1, USN-4398-2, VIGILANCE-VUL-32446.

Description of the vulnerability 

An attacker can trigger a fatal error via File Descriptor Leak of D-Bus, in order to trigger a denial of service.
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This security alert impacts software or systems such as Debian, Fedora, RHEL, Ubuntu.

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

Solutions for this threat 

Debian 8: new dbus packages.
New packages are available:
  Debian 8: dbus 1.8.22-0+deb8u3

Fedora 31: new dbus packages.
New packages are available:
  Fedora 31: dbus 1.12.18-1.fc31

Fedora 32: new dbus packages.
New packages are available:
  Fedora 32: dbus 1.12.18-1.fc32

RHEL 7.8: new dbus packages.
New packages are available:
  RHEL 7.8: dbus 1.10.24-14.el7_8

RHEL 8.0: new dbus packages.
New packages are available:
  RHEL 8.0: dbus 1.12.8-8.el8_0

RHEL 8.1: new dbus packages.
New packages are available:
  RHEL 8.1: dbus 1.12.8-10.el8_1

RHEL 8.2: new dbus packages.
New packages are available:
  RHEL 8.2: dbus 1.12.8-10.el8_2

Ubuntu: new dbus packages.
New packages are available:
  Ubuntu 20.04 LTS: dbus 1.12.16-2ubuntu2.1, libdbus-1-3 1.12.16-2ubuntu2.1
  Ubuntu 19.10: dbus 1.12.14-1ubuntu2.1, libdbus-1-3 1.12.14-1ubuntu2.1
  Ubuntu 18.04 LTS: dbus 1.12.2-1ubuntu1.2, libdbus-1-3 1.12.2-1ubuntu1.2
  Ubuntu 16.04 LTS: dbus 1.10.6-1ubuntu3.6, libdbus-1-3 1.10.6-1ubuntu3.6
  Ubuntu 14.04 ESM: libdbus-1-3 1.6.18-0ubuntu4.5+esm2
  Ubuntu 12.04 ESM: libdbus-1-3 1.4.18-1ubuntu1.10
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