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Vulnerability of Linux kernel: information disclosure via Spectre Backport

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data via Spectre Backport of the Linux kernel, in order to obtain sensitive information.
Vulnerable products: Debian, Linux, openSUSE Leap, SIMATIC, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this weakness: 2/4.
Creation date: 25/09/2019.
Références of this bulletin: CERTFR-2019-AVI-455, CERTFR-2019-AVI-466, CERTFR-2019-AVI-502, CERTFR-2019-AVI-503, CERTFR-2019-AVI-518, CERTFR-2019-AVI-527, CERTFR-2019-AVI-530, CERTFR-2019-AVI-561, CERTFR-2019-AVI-575, CVE-2019-15902, DLA-1940-1, DSA-4531-1, openSUSE-SU-2019:2173-1, openSUSE-SU-2019:2181-1, SSB-439005, SUSE-SU-2019:14218-1, SUSE-SU-2019:2412-1, SUSE-SU-2019:2424-1, SUSE-SU-2019:2648-1, SUSE-SU-2019:2651-1, SUSE-SU-2019:2658-1, SUSE-SU-2019:2738-1, SUSE-SU-2019:2949-1, SUSE-SU-2019:2950-1, SUSE-SU-2019:2984-1, USN-4157-1, USN-4157-2, USN-4162-1, USN-4162-2, USN-4163-1, USN-4163-2, VIGILANCE-VUL-30402.

Description of the vulnerability 

An attacker can bypass access restrictions to data via Spectre Backport of the Linux kernel, in order to obtain sensitive information.
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This threat alert impacts software or systems such as Debian, Linux, openSUSE Leap, SIMATIC, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

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

Solutions for this threat 

Linux kernel: version 5.2.12.
The version 5.2.12 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 4.19.70.
The version 4.19.70 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.14.142.
The version 4.14.142 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.9.191.
The version 4.9.191 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.4.191.
The version 4.4.191 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Debian 8: new linux-4.9 packages.
New packages are available:
  Debian 8: linux-4.9 4.9.189-3+deb9u1~deb8u1

Debian 9, 10: new linux packages.
New packages are available:
  Debian 9: linux 4.9.189-3+deb9u1
  Debian 10: linux 4.19.67-2+deb10u1

openSUSE Leap 15: new kernel packages.
New packages are available:
  openSUSE Leap 15.0: kernel 4.12.14-lp150.12.73.1
  openSUSE Leap 15.1: kernel 4.12.14-lp151.28.16.1

SIMATIC S7-1500 CPU 1518: workaround for GNU/Linux Vulnerabilities.
A workaround is indicated in the information source.

SUSE LE 11 SP4: new kernel packages.
New packages are available:
  SUSE LE 11 SP4: kernel 3.0.101-108.108.1

SUSE LE 12 SP1: new kernel packages (13/11/2019).
New packages are available:
  SUSE LE 12 SP1: kernel 3.12.74-60.64.124.1

SUSE LE 12 SP2: new kernel packages.
New packages are available:
  SUSE LE 12 SP2: kernel 4.4.121-92.125.1

SUSE LE 12 SP3: new kernel packages (13/11/2019).
New packages are available:
  SUSE LE 12 SP3: kernel 4.4.180-94.107.1

SUSE LE 12 SP4: new kernel-azure packages.
New packages are available:
  SUSE LE 12 SP4: kernel-azure 4.12.14-6.26.1

SUSE LE 12 SP4: new kernel-default packages.
New packages are available:
  SUSE LE 12 SP4: kernel-default 4.12.14-95.32.1

SUSE LE 15: new kernel-azure packages.
New packages are available:
  SUSE LE 15 RTM: kernel-azure 4.12.14-5.41.1
  SUSE LE 15 SP1: kernel-azure 4.12.14-8.16.1

SUSE LE 15 SP1: new kernel-default packages.
New packages are available:
  SUSE LE 15 SP1: kernel-default 4.12.14-197.18.1

SUSE LE 15 SP1: new kernel-rt packages.
New packages are available:
  SUSE LE 15 SP1: kernel-rt 4.12.14-14.11.1

Ubuntu 19.04: new linux-image-5.0.0 packages.
New packages are available:
  Ubuntu 19.04: linux-image-generic 5.0.0.32.33
  Ubuntu 18.04 LTS: linux-image-generic-hwe-18.04 5.0.0.32.89

Ubuntu: new linux-image-4.15.0 packages.
New packages are available:
  Ubuntu 14.04 ESM: linux-image-azure 4.15.0.1061.47
  Ubuntu 16.04 LTS: linux-image-generic-hwe-16.04 4.15.0.66.86
  Ubuntu 18.04 LTS: linux-image-generic 4.15.0.66.68

Ubuntu: new linux-image-4.4.0 packages.
New packages are available:
  Ubuntu 16.04 LTS: linux-image-generic 4.4.0.166.174
  Ubuntu 14.04 ESM: linux-image-aws 4.4.0.1056.57

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