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Vulnerability of X.Org Server: out-of-bounds memory reading via XkbSetMap

Synthesis of the vulnerability 

An attacker can force a read at an invalid address via XkbSetMap of X.Org Server, in order to trigger a denial of service, or to obtain sensitive information.
Impacted systems: Debian, Fedora, OpenBSD, openSUSE Leap, Solaris, RHEL, SUSE Linux Enterprise Desktop, SLES, Ubuntu, XOrg Bundle ~ not comprehensive.
Severity of this alert: 2/4.
Creation date: 01/12/2020.
Références of this alert: CVE-2020-14360, DLA-2486-1, DSA-4803-1, FEDORA-2020-c8a7df24d4, FEDORA-2020-e82f9b80eb, openSUSE-SU-2020:2147-1, openSUSE-SU-2020:2186-1, RHSA-2020:5408-01, SUSE-SU-2020:14553-1, SUSE-SU-2020:3582-1, SUSE-SU-2020:3585-1, SUSE-SU-2020:3586-1, SUSE-SU-2020:3587-1, SUSE-SU-2020:3588-1, SUSE-SU-2020:3589-1, USN-4656-1, USN-4656-2, VIGILANCE-VUL-34013.

Description of the vulnerability 

An attacker can force a read at an invalid address via XkbSetMap of X.Org Server, in order to trigger a denial of service, or to obtain sensitive information.
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This computer vulnerability bulletin impacts software or systems such as Debian, Fedora, OpenBSD, openSUSE Leap, Solaris, RHEL, SUSE Linux Enterprise Desktop, SLES, Ubuntu, XOrg Bundle ~ not comprehensive.

Our Vigil@nce team determined that the severity of this vulnerability bulletin 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 threat note.

Solutions for this threat 

X.Org Server: version 1.20.10.
The version 1.20.10 is fixed:
  https://xorg.freedesktop.org/archive/individual/xserver/xorg-server-1.20.10.tar.bz2
  https://xorg.freedesktop.org/archive/individual/xserver/xorg-server-1.20.10.tar.gz

X.Org Server: patch for XkbSetMap.
A patch is indicated in information sources.

Debian 10: new xorg-server packages.
New packages are available:
  Debian 10: xorg-server 2:1.20.4-1+deb10u2

Debian 9: new xorg-server packages.
New packages are available:
  Debian 9: xorg-server 2:1.19.2-1+deb9u7

Fedora 32-33: new xorg-x11-server packages.
New packages are available:
  Fedora 32: xorg-x11-server 1.20.10-1.fc32
  Fedora 33: xorg-x11-server 1.20.10-1.fc33

OpenBSD: patch for X.Org Server.
A patch is available:
  https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/030_xmaplen.patch.sig
  https://ftp.openbsd.org/pub/OpenBSD/patches/6.8/common/007_xmaplen.patch.sig

openSUSE Leap 15.1: new xorg-x11-server packages.
New packages are available:
  openSUSE Leap 15.1: xorg-x11-server 1.20.3-lp151.4.9.1

openSUSE Leap 15.2: new xorg-x11-server packages.
New packages are available:
  openSUSE Leap 15.2: xorg-x11-server 1.20.3-lp152.8.12.1

Oracle Solaris: patch for third party software of January 2021 v3.
A patch is available:
  https://support.oracle.com/rs?type=doc&id=1448883.1

RHEL 7.9: new xorg-x11-server packages.
New packages are available:
  RHEL 7.9: xorg-x11-server 1.20.4-15.el7_9

SUSE LE: new xorg-x11-server packages.
New packages are available:
  SUSE LE 11 SP3: xorg-x11-server 7.4-27.122.37.1
  SUSE LE 11 SP4: xorg-x11-server 7.4-27.122.37.1
  SUSE LE 12 SP2: xorg-x11-server 7.6_1.18.3-76.37.1
  SUSE LE 12 SP3: xorg-x11-server 7.6_1.18.3-76.37.1
  SUSE LE 12 SP4: xorg-x11-server 1.19.6-4.19.1
  SUSE LE 12 SP5: xorg-x11-server 1.19.6-10.20.1
  SUSE LE 15 RTM: xorg-x11-server 1.19.6-8.27.1
  SUSE LE 15 SP1: xorg-x11-server 1.20.3-14.5.13.1
  SUSE LE 15 SP2: xorg-x11-server 1.20.3-22.5.16.1

Ubuntu: new xserver-xorg-core packages.
New packages are available:
  Ubuntu 20.10: xserver-xorg-core 2:1.20.9-2ubuntu1.1
  Ubuntu 20.04 LTS: xserver-xorg-core 2:1.20.8-2ubuntu2.6
  Ubuntu 18.04 LTS: xserver-xorg-core 2:1.19.6-1ubuntu4.8
  Ubuntu 16.04 LTS: xserver-xorg-core 2:1.18.4-0ubuntu0.11
  Ubuntu 14.04 ESM: xserver-xorg-core 2:1.15.1-0ubuntu2.11+esm3
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