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Vulnerability of QEMU: out-of-bounds memory reading via ARM Generic Interrupt Controller

Synthesis of the vulnerability 

An attacker, inside a guest system, can force a read at an invalid address via ARM Generic Interrupt Controller of QEMU, in order to trigger a denial of service, or to obtain sensitive information on the host system.
Impacted software: Debian, openSUSE Leap, QEMU, SUSE Linux Enterprise Desktop, SLES.
Severity of this computer vulnerability: 2/4.
Creation date: 05/02/2021.
Références of this announce: CVE-2021-20221, DLA-2560-1, openSUSE-SU-2021:0363-1, SUSE-SU-2021:0521-1, SUSE-SU-2021:1241-1, SUSE-SU-2021:1242-1, SUSE-SU-2021:1244-1, SUSE-SU-2021:1245-1, SUSE-SU-2021:1829-1, SUSE-SU-2021:1894-1, VIGILANCE-VUL-34492.

Description of the vulnerability 

An attacker, inside a guest system, can force a read at an invalid address via ARM Generic Interrupt Controller of QEMU, in order to trigger a denial of service, or to obtain sensitive information on the host system.
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This cybersecurity weakness impacts software or systems such as Debian, openSUSE Leap, QEMU, SUSE Linux Enterprise Desktop, SLES.

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

Solutions for this threat 

QEMU: patch for ARM Generic Interrupt Controller.
A patch is indicated in information sources.

Debian 9: new qemu packages.
New packages are available:
  Debian 9: qemu 1:2.8+dfsg-6+deb9u13

openSUSE Leap 15.2: new qemu packages.
New packages are available:
  openSUSE Leap 15.2: qemu 4.2.1-lp152.9.9.2

SUSE LE 12 SP2: new qemu packages (02/06/2021).
New packages are available:
  SUSE LE 12 SP2: qemu 2.6.2-41.65.1

SUSE LE 12 SP3: new qemu packages (08/06/2021).
New packages are available:
  SUSE LE 12 SP3: qemu 2.9.1-6.50.1

SUSE LE 12 SP4: new qemu packages (16/04/2021).
New packages are available:
  SUSE LE 12 SP4: qemu 2.11.2-5.29.1

SUSE LE 12 SP5: new qemu packages (16/04/2021).
New packages are available:
  SUSE LE 12 SP5: qemu 3.1.1.1-48.2

SUSE LE 15 RTM: new qemu packages (16/04/2021).
New packages are available:
  SUSE LE 15 RTM: qemu 2.11.2-9.43.1

SUSE LE 15 SP1: new qemu packages (16/04/2021).
New packages are available:
  SUSE LE 15 SP1: qemu 3.1.1.1-9.24.3

SUSE LE 15 SP2: new qemu packages.
New packages are available:
  SUSE LE 15 SP2: qemu 4.2.1-11.13.1
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