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Vulnerability of QEMU: buffer overflow via xgmac_enet_send

Synthesis of the vulnerability 

An attacker, inside a guest system, can trigger a buffer overflow via xgmac_enet_send() of QEMU, in order to trigger a denial of service, and possibly to run code on the host system.
Vulnerable products: Debian, openSUSE Leap, QEMU, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this weakness: 2/4.
Creation date: 22/07/2020.
Références of this bulletin: CVE-2020-15863, DLA-2288-1, DSA-4760-1, openSUSE-SU-2020:1664-1, SUSE-SU-2020:2743-1, SUSE-SU-2020:2877-1, USN-4467-1, VIGILANCE-VUL-32898.

Description of the vulnerability 

An attacker, inside a guest system, can trigger a buffer overflow via xgmac_enet_send() of QEMU, in order to trigger a denial of service, and possibly to run code on the host system.
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This security threat impacts software or systems such as Debian, openSUSE Leap, QEMU, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

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

Solutions for this threat 

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

Debian 10: new qemu packages.
New packages are available:
  Debian 10: qemu 1:3.1+dfsg-8+deb10u8

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-lp152.9.6.1

SUSE LE 12 SP5: new qemu packages.
New packages are available:
  SUSE LE 12 SP5: qemu 3.1.1.1-45.1

SUSE LE 15 SP2: new qemu packages.
New packages are available:
  SUSE LE 15 SP2: qemu 4.2.1-11.10.1

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

Wind River Linux: version 10.18.44.19.
The version 10.18.44.19 is fixed:
  https://support2.windriver.com/index.php?page=cve&on=list&show=50&product_id=1&product_version%5B0%5D=23&id_status%5B0%5D=4&cve_id_filter=&s=&submit=&order_by=cve_modified_date&order_way=desc#list
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