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Vulnerability of Ruby JSON: memory corruption

Synthesis of the vulnerability 

An attacker can trigger a memory corruption of Ruby JSON, in order to trigger a denial of service, and possibly to run code.
Vulnerable products: Debian, Fedora, openSUSE Leap, RHEL, SUSE Linux Enterprise Desktop, SLES.
Severity of this weakness: 2/4.
Creation date: 28/04/2020.
Références of this bulletin: CVE-2020-10663, DLA-2190-1, DLA-2192-1, DSA-4721-1, FEDORA-2020-26df92331a, FEDORA-2020-a95706b117, FEDORA-2020-d171bf636d, openSUSE-SU-2020:0586-1, RHSA-2020:2462-01, RHSA-2020:2473-01, RHSA-2020:2670-01, SUSE-SU-2020:1570-1, VIGILANCE-VUL-32118.

Description of the vulnerability 

An attacker can trigger a memory corruption of Ruby JSON, in order to trigger a denial of service, and possibly to run code.
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This threat alert impacts software or systems such as Debian, Fedora, openSUSE Leap, RHEL, SUSE Linux Enterprise Desktop, SLES.

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

The trust level is of type confirmed by the editor, with an origin of document.

An attacker with a expert ability can exploit this weakness note.

Solutions for this threat 

Debian 10: new ruby2.5 packages.
New packages are available:
  Debian 10: ruby2.5 2.5.5-3+deb10u2

Debian 8: new ruby2.1 packages.
New packages are available:
  Debian 8: ruby2.1 2.1.5-2+deb8u10

Debian 8: new ruby-json packages.
New packages are available:
  Debian 8: ruby-json 1.8.1-1+deb8u1

Fedora 30, 31: new rubygem-json packages.
New packages are available:
  Fedora 30: rubygem-json 2.2.0-202.fc30
  Fedora 31: rubygem-json 2.2.0-202.fc31

Fedora 31: new ruby packages.
New packages are available:
  Fedora 31: ruby 2.6.6-125.fc31

openSUSE Leap 15.1: new ruby2.5 packages.
New packages are available:
  openSUSE Leap 15.1: ruby2.5 2.5.8-lp151.4.9.1

RHEL 8.0: new pcs packages.
New packages are available:
  RHEL 8.0: pcs 0.10.1-4.el8_0.5

RHEL 8.1: new pcs packages.
New packages are available:
  RHEL 8.1: pcs 0.10.2-4.el8_1.1

RHEL 8.2: new pcs packages.
New packages are available:
  RHEL 8.2: pcs 0.10.4-6.el8_2.1

SUSE LE 12: new ruby2.1 packages.
New packages are available:
  SUSE LE 12 SP2: ruby2.1 2.1.9-19.3.2
  SUSE LE 12 SP3: ruby2.1 2.1.9-19.3.2
  SUSE LE 12 SP4: ruby2.1 2.1.9-19.3.2
  SUSE LE 12 SP5: ruby2.1 2.1.9-19.3.2
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