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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, 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, VIGILANCE-VUL-34492.

Description of the vulnerability 

An attacker, inside a guest system, can force a read at an invalid address via A...
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This cybersecurity weakness impacts software or systems such as Debian, openSUSE Leap, QEMU, 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 

Workarounds for this vulnerability are not yet public.
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