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Vulnerability of QEMU: NULL pointer dereference via the MegaRAID SAS 8708EM device driver

Synthesis of the vulnerability 

An attacker can force a NULL pointer to be dereferenced via MegaRAID SAS 8708EM of QEMU, in order to trigger a denial of service.
Vulnerable software: Debian, openSUSE Leap, QEMU, SLES, Ubuntu.
Severity of this announce: 1/4.
Creation date: 02/06/2020.
Références of this computer vulnerability: CVE-2020-13659, DLA-2288-1, DSA-4728-1, openSUSE-SU-2020:1108-1, SUSE-SU-2020:2015-1, USN-4467-1, USN-4467-2, USN-4467-3, VIGILANCE-VUL-32383.

Description of the vulnerability 

An attacker can force a NULL pointer to be dereferenced via MegaRAID SAS 8708EM of QEMU, in order to trigger a denial of service.
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This security vulnerability impacts software or systems such as Debian, openSUSE Leap, QEMU, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this computer weakness bulletin 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 note.

Solutions for this threat 

QEMU: patch for MegaRAID SAS 8708EM2.
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

openSUSE Leap 15.2: new qemu packages.
New packages are available:
  openSUSE Leap 15.2: qemu 4.2.1-lp152.9.3.1

SUSE LE 15 SP2: new qemu packages.
New packages are available:
  SUSE LE 15 SP2: qemu 4.2.1-11.4.4

Ubuntu 14.04: new qemu packages.
New packages are available:
  Ubuntu 14.04 ESM: qemu 2.0.0+dfsg-2ubuntu1.47+esm1

Ubuntu: new qemu packages.
New packages are available:
  Ubuntu 20.10: qemu 1:5.0-5ubuntu9.6
  Ubuntu 20.04 LTS: qemu 1:4.2-3ubuntu6.14
  Ubuntu 18.04 LTS: qemu 1:2.11+dfsg-1ubuntu7.36
  Ubuntu 16.04 LTS: qemu 1:2.5+dfsg-5ubuntu10.51
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