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computer vulnerability announce CVE-2019-15890

QEMU: use after free via SLiRP Packet Reassembly

Synthesis of the vulnerability

An attacker can force the usage of a freed memory area via SLiRP Packet Reassembly of QEMU, in order to trigger a denial of service, and possibly to run code.
Severity of this announce: 2/4.
Creation date: 06/09/2019.
Références of this computer vulnerability: CVE-2019-15890, DLA-1927-1, openSUSE-SU-2019:2510-1, SUSE-SU-2019:2783-1, SUSE-SU-2019:2955-1, USN-4191-1, USN-4191-2, VIGILANCE-VUL-30265.
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Description of the vulnerability

An attacker can force the usage of a freed memory area via SLiRP Packet Reassembly of QEMU, in order to trigger a denial of service, and possibly to run code.
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This cybersecurity bulletin 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 cybersecurity weakness is medium.

The trust level is of type confirmed by the editor, with an origin of intranet client.

An attacker with a expert ability can exploit this computer vulnerability bulletin.

Solutions for this threat

QEMU: version 4.0.1.
The version 4.0.1 is fixed:
  https://www.qemu.org/download/#source

QEMU: patch for SLiRP Packet Reassembly.
A patch is indicated in information sources.

Debian 8: new qemu packages (duplicate).
This bulletin is a duplicate of VIGILANCE-SOL-68382.

Debian 8: new qemu packages (original).
New packages are available:
  Debian 8: qemu 1:2.1+dfsg-12+deb8u12

openSUSE Leap 15.1: new qemu packages (14/11/2019).
New packages are available:
  openSUSE Leap 15.1: qemu 3.1.1.1-lp151.7.6.1

SUSE LE 12 SP2: new xen packages.
New packages are available:
  SUSE LE 12 SP2: xen 4.7.6_06-43.54.2

SUSE LE 15 SP1: new qemu packages (13/11/2019).
New packages are available:
  SUSE LE 15 SP1: qemu 3.1.1.1-9.6.2

Ubuntu: new qemu packages.
New packages are available:
  Ubuntu 19.10: qemu 1:4.0+dfsg-0ubuntu9.1
  Ubuntu 19.04: qemu 1:3.1+dfsg-2ubuntu3.6
  Ubuntu 18.04 LTS: qemu 1:2.11+dfsg-1ubuntu7.20
  Ubuntu 16.04 LTS: qemu 1:2.5+dfsg-5ubuntu10.42
  Ubuntu 14.04 ESM: qemu 2.0.0+dfsg-2ubuntu1.47

Wind River Linux: version 10.18.44.11.
The version 10.18.44.11 is fixed:
  https://support2.windriver.com/
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