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Synthesis of the vulnerability 
An attacker can trigger a fatal error via sg_write() of the Linux kernel, in order to trigger a denial of service.
Impacted software: Debian, Fedora, Linux, RHEL, Slackware, Ubuntu.
Severity of this computer vulnerability: 1/4.
Creation date: 11/05/2020.
Références of this announce: CERTFR-2020-AVI-368, CERTFR-2020-AVI-421, CERTFR-2020-AVI-612, CERTFR-2020-AVI-710, CERTFR-2020-AVI-770, CERTFR-2020-AVI-823, CERTFR-2020-AVI-841, CVE-2020-12770, DLA-2241-1, DLA-2241-2, DLA-2242-1, DSA-4698-1, DSA-4699-1, FEDORA-2020-4c69987c40, FEDORA-2020-5a69decc0c, FEDORA-2020-c6b9fff7f8, RHSA-2020:4060-01, RHSA-2020:4062-01, RHSA-2020:4431-01, RHSA-2020:4609-01, RHSA-2020:5206-01, RHSA-2020:5430-01, RHSA-2020:5656-01, SSA:2020-163-01, USN-4411-1, USN-4412-1, USN-4413-1, USN-4414-1, USN-4419-1, VIGILANCE-VUL-32224.
Description of the vulnerability 
An attacker can trigger a fatal error via sg_write() of the Linux kernel, in order to trigger a denial of service. Full bulletin, software filtering, emails, fixes, ... (Request your free trial)
This weakness impacts software or systems such as Debian, Fedora, Linux, RHEL, Slackware, Ubuntu.
Our Vigil@nce team determined that the severity of this vulnerability announce 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 threat bulletin.
Solutions for this threat 
Linux kernel: version 5.6.12.
The version 5.6.12 is fixed:
https://cdn.kernel.org/pub/linux/kernel/v5.x/
Linux kernel: version 5.4.42.
The version 5.4.42 is fixed:
https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.42.tar.xz
Linux kernel: version 4.19.124.
The version 4.19.124 is fixed:
https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.19.124.tar.xz
Linux kernel: version 4.14.181.
The version 4.14.181 is fixed:
https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.14.181.tar.xz
Linux kernel: version 4.9.224.
The version 4.9.224 is fixed:
https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.9.224.tar.xz
Linux kernel: version 4.4.224.
The version 4.4.224 is fixed:
https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.4.224.tar.xz
Linux kernel: version 3.16.85.
The version 3.16.85 is fixed:
https://cdn.kernel.org/pub/linux/kernel/v3.x/
Linux kernel: patch for sg_write.
A patch is indicated in information sources.
Debian 10: new linux packages.
New packages are available:
Debian 10: linux 4.19.118-2+deb10u1
Debian 8: new linux-4.9 packages.
New packages are available:
Debian 8: linux-4.9 4.9.210-1+deb9u1~deb8u1
Debian 8: new linux packages.
New packages are available:
Debian 8: linux 3.16.84-1
Debian 9: new linux packages.
New packages are available:
Debian 9: linux 4.9.210-1+deb9u1
Fedora 30-31: new kernel packages.
New packages are available:
Fedora 30: kernel 5.6.13-100.fc30
Fedora 31: kernel 5.6.13-200.fc31
Fedora 32: new kernel packages.
New packages are available:
Fedora 32: kernel 5.6.12-300.fc32
RHEL 7.4: new kernel packages.
New packages are available:
RHEL 7.0-7.9: kernel 3.10.0-693.81.1.el7
RHEL 7.6: new kernel packages.
New packages are available:
RHEL 7.6: kernel 3.10.0-957.65.1.el7
RHEL 7.7: new kernel packages.
New packages are available:
RHEL 7.0-7.9: kernel 3.10.0-1062.40.1.el7
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
RHEL 8: new kernel packages (04/11/2020).
New packages are available:
RHEL 8.0-8.2: kernel 4.18.0-240.el8
RHEL 8: new kernel-rt packages (04/11/2020).
New packages are available:
RHEL 8.0-8.2: kernel-rt 4.18.0-240.rt7.54.el8
Slackware 14.2: new kernel packages.
New packages are available:
Slackware 14.2: kernel 4.4.227-i586-1
Ubuntu 18.04: new linux-image-5.0.0 packages.
New packages are available:
Ubuntu 18.04 LTS: linux-image-gke-5.0 5.0.0.1043.28
Ubuntu 20.04: new linux-image-5.4.0 packages.
New packages are available:
Ubuntu 20.04 LTS: linux-image-generic 5.4.0.28.35
Ubuntu: new linux-image-4.15.0 packages.
New packages are available:
Ubuntu 16.04 LTS: linux-image-generic-hwe-16.04 4.15.0.107.112
Ubuntu 18.04 LTS: linux-image-generic 4.15.0.109.97
Ubuntu: new linux-image-4.4.0 packages.
New packages are available:
Ubuntu 14.04 ESM: linux-image-generic-lts-xenial 4.4.0.185.162
Ubuntu 16.04 LTS: linux-image-generic 4.4.0.185.191
Ubuntu: new linux-image-5.3.0 packages.
New packages are available:
Ubuntu 18.04 LTS: linux-image-generic-hwe-18.04 5.3.0.62.115
Ubuntu 19.10: linux-image-generic 5.3.0.62.52
Wind River Linux: version 10.18.44.17.
The version 10.18.44.17 is fixed:
https://support2.windriver.com/
Wind River Linux: version 10.19.45.8.
The version 10.19.45.8 is fixed.
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)
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