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Vulnerability of Linux kernel: assertion error via sas_ex_discover_expander

Synthesis of the vulnerability 

An attacker can force an assertion error via sas_ex_discover_expander() of the Linux kernel, in order to trigger a denial of service.
Impacted software: Debian, Tivoli Storage Manager, Linux, RHEL, RSA Authentication Manager, SUSE Linux Enterprise Desktop, SLES.
Severity of this computer vulnerability: 1/4.
Creation date: 30/08/2019.
Références of this announce: CERTFR-2019-AVI-561, CERTFR-2019-AVI-575, CERTFR-2020-AVI-612, CVE-2019-15807, DLA-1919-1, DLA-1919-2, DLA-1930-1, DSA-2019-189, RHSA-2020:4060-01, RHSA-2020:4062-01, SUSE-SU-2019:14218-1, SUSE-SU-2019:2949-1, SUSE-SU-2019:2950-1, SUSE-SU-2019:2984-1, VIGILANCE-VUL-30208.

Description of the vulnerability 

An attacker can force an assertion error via sas_ex_discover_expander() of the Linux kernel, in order to trigger a denial of service.
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This threat bulletin impacts software or systems such as Debian, Tivoli Storage Manager, Linux, RHEL, RSA Authentication Manager, SUSE Linux Enterprise Desktop, SLES.

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

Solutions for this threat 

Linux kernel: version 5.1.13.
The version 5.1.13 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 4.19.54.
The version 4.19.54 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 3.16.74.
The version 3.16.74 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v3.x/linux-3.16.74.tar.xz

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

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

Debian 8: new linux packages.
New packages are available:
  Debian 8: linux 3.16.74-1

IBM Spectrum Protect Plus: version 10.1.4.222.
The version 10.1.4.222 is fixed:
  http://www.ibm.com/support/docview.wss?uid=ibm10880861

RHEL 7.8: new kernel packages.
New packages are available:
  RHEL 7.0-7.8: kernel 3.10.0-1160.el7

RHEL 7.8: new kernel-rt packages.
New packages are available:
  RHEL 7.0-7.8: kernel-rt 3.10.0-1160.rt56.1131.el7

RSA Authentication Manager: version 8.4 Patch 9.
The version 8.4 Patch 9 is fixed:
  https://www.dell.com/support/

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

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