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Vulnerability of QEMU: out-of-bounds memory reading via the support for Message Signalled Interrupt

Synthesis of the vulnerability 

An attacker can force a read at an invalid address via Message Signalled Interrupt of QEMU, in order to trigger a denial of service, or to obtain sensitive information.
Vulnerable systems: Debian, QEMU, Ubuntu.
Severity of this threat: 1/4.
Creation date: 02/06/2020.
Références of this weakness: CVE-2020-13754, DLA-2288-1, DSA-4728-1, USN-4467-1, VIGILANCE-VUL-32384.

Description of the vulnerability 

An attacker can force a read at an invalid address via Message Signalled Interrupt of QEMU, in order to trigger a denial of service, or to obtain sensitive information.
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This vulnerability alert impacts software or systems such as Debian, QEMU, Ubuntu.

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

Solutions for this threat 

QEMU: version 5.0.1.
The version 5.0.1 is fixed:
  https://www.qemu.org/download/#source

QEMU: patch for msix.
A patch is indicated in information sources.

Debian 10: new qemu packages.
New packages are available:
  Debian 10: qemu 1:3.1+dfsg-8+deb10u6

Debian 9: new qemu packages.
New packages are available:
  Debian 9: qemu 1:2.8+dfsg-6+deb9u10

Ubuntu: new qemu packages.
New packages are available:
  Ubuntu 20.04 LTS: qemu 1:4.2-3ubuntu6.4
  Ubuntu 18.04 LTS: qemu 1:2.11+dfsg-1ubuntu7.31
  Ubuntu 16.04 LTS: qemu 1:2.5+dfsg-5ubuntu10.45
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