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Vulnerability of Linux kernel: information disclosure via slc_bump

Synthesis of the vulnerability 

A local attacker can read a memory fragment via slc_bump() of the Linux kernel, in order to obtain sensitive information.
Vulnerable software: Linux, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this announce: 1/4.
Creation date: 03/04/2020.
Références of this computer vulnerability: CERTFR-2020-AVI-241, CERTFR-2020-AVI-242, CERTFR-2020-AVI-256, CERTFR-2020-AVI-300, CERTFR-2020-AVI-312, CERTFR-2020-AVI-318, CERTFR-2020-AVI-326, CVE-2020-11494, openSUSE-SU-2020:0543-1, SUSE-SU-2020:1084-1, SUSE-SU-2020:1085-1, SUSE-SU-2020:1087-1, SUSE-SU-2020:1118-1, SUSE-SU-2020:1119-1, SUSE-SU-2020:1123-1, SUSE-SU-2020:1141-1, SUSE-SU-2020:1142-1, SUSE-SU-2020:1146-1, SUSE-SU-2020:1255-1, USN-4363-1, USN-4364-1, USN-4368-1, USN-4369-1, USN-4369-2, VIGILANCE-VUL-31933.

Description of the vulnerability 

A local attacker can read a memory fragment via slc_bump() of the Linux kernel, in order to obtain sensitive information.
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This computer weakness note impacts software or systems such as Linux, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this security 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 weakness announce.

Solutions for this threat 

Linux kernel: version 5.6.4.
The version 5.6.4 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 5.5.17.
The version 5.5.17 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 5.4.32.
The version 5.4.32 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 4.19.115.
The version 4.19.115 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.14.176.
The version 4.14.176 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.9.219.
The version 4.9.219 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.4.219.
The version 4.4.219 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 3.16.83.
The version 3.16.83 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v3.x/linux-3.16.83.tar.xz

Linux kernel: patch for slc_bump.
A patch is indicated in information sources.

openSUSE Leap 15.1: new kernel packages.
New packages are available:
  openSUSE Leap 15.1: kernel 4.12.14-lp151.28.48.1

SUSE LE 12 SP2: new kernel packages.
New packages are available:
  SUSE LE 12 SP2: kernel-default 4.4.121-92.129.1

SUSE LE 12 SP4: new kernel-default-kgraft packages.
New packages are available:
  SUSE LE 12 SP4: kernel-default-kgraft 4.12.14-95.51.1

SUSE LE 12 SP4: new kernel-rt packages.
New packages are available:
  SUSE LE 12 SP4: kernel-rt 4.12.14-8.18.1

SUSE LE 12 SP4, SP5: new kernel-azure packages.
New packages are available:
  SUSE LE 12 SP5: kernel-azure 4.12.14-16.13.1
  SUSE LE 12 SP4: kernel-azure 4.12.14-6.40.1

SUSE LE 12 SP5: new kernel-default-kgraft packages.
New packages are available:
  SUSE LE 12 SP5: kernel-default-kgraft 4.12.14-122.20.1

SUSE LE 12 SP5: new kernel-rt packages.
New packages are available:
  SUSE LE 12 SP5: kernel-rt 4.12.14-10.8.1

SUSE LE 15 SP1: new kernel-azure packages.
New packages are available:
  SUSE LE 15 SP1: kernel-azure 4.12.14-8.30.1

SUSE LE 15 SP1: new kernel packages.
New packages are available, as indicated in information sources.

SUSE LE 15 SP1: new kernel-rt packages.
New packages are available:
  SUSE LE 15 SP1: kernel-rt 4.12.14-14.23.1

Ubuntu 18.04 LTS: new linux-image-5.0 packages.
New packages are available:
  Ubuntu 18.04 LTS: linux-image-5.0.0-1037-gke 5.0.0-1037.38, linux-image-5.0.0-1052-oem-osp1 5.0.0-1052.57, linux-image-gke-5.0 5.0.0.1037.25, linux-image-oem-osp1 5.0.0.1052.55

Ubuntu: new linux-image-4.15.0 packages.
New packages are available, as indicated in information sources.

Ubuntu: new linux-image-4.4.0 packages.
New packages are available, as indicated in information sources.

Ubuntu: new linux-image-5.3.0 packages.
New packages are available:
  Ubuntu 18.04 LTS: linux-image-generic-hwe-18.04 5.3.0.53.109
  Ubuntu 19.10: linux-image-generic 5.3.0.53.45

Wind River Linux: version 10.17.41.21.
The version 10.17.41.21 is fixed:
  https://support2.windriver.com/

Wind River Linux: version 10.18.44.17.
The version 10.18.44.17 is fixed:
  https://support2.windriver.com/

Wind River Linux: version 10.19.45.7.
The version 10.19.45.7 is fixed:
  https://support2.windriver.com/
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