The Vigil@nce team watches public vulnerabilities impacting your computers, and then offers security solutions, a vigilance database and tools to fix them.

Vulnerability of Linux kernel: denial of service via can_can_gw_rcv

Synthesis of the vulnerability 

An attacker can trigger a fatal error via can_can_gw_rcv() of the Linux kernel, in order to trigger a denial of service.
Vulnerable software: Debian, Fedora, Linux, openSUSE Leap, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this announce: 1/4.
Creation date: 04/01/2019.
Références of this computer vulnerability: CERTFR-2019-AVI-145, CERTFR-2019-AVI-419, CERTFR-2019-AVI-441, CERTFR-2020-AVI-241, CERTFR-2020-AVI-242, CERTFR-2020-AVI-256, CERTFR-2020-AVI-318, CVE-2019-3701, DLA-1731-1, DLA-1731-2, DLA-1771-1, FEDORA-2019-337484d88b, FEDORA-2019-b0f7a7b74b, openSUSE-SU-2020:0543-1, SSA:2019-030-01, 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-3932-1, USN-3932-2, USN-4115-1, USN-4115-2, USN-4118-1, VIGILANCE-VUL-28165.

Description of the vulnerability 

An attacker can trigger a fatal error via can_can_gw_rcv() of the Linux kernel, in order to trigger a denial of service.
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

This computer threat announce impacts software or systems such as Debian, Fedora, Linux, openSUSE Leap, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this computer vulnerability 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 cybersecurity alert.

Solutions for this threat 

Linux kernel: version 4.20.4.
The version 4.20.4 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.19.17.
The version 4.19.17 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.14.95.
The version 4.14.95 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.4.172.
The version 4.4.172 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.9.152.
The version 4.9.152 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 3.18.133.
The version 3.18.133 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v3.x/

Linux kernel: version 3.16.64.
The version 3.16.64 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v3.x/

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

Debian 8: new linux-4.9 packages.
New packages are available:
  Debian 8: linux-4.9 4.9.168-1~deb8u1

Debian 8: new linux packages (27/03/2019).
New packages are available:
  Debian 8: linux 3.16.64-2

Fedora 29: new kernel packages.
New packages are available:
  Fedora 29: kernel 4.19.14-300.fc29

Fedora: new kernel-headers packages.
New packages are available:
  Fedora 28: kernel-headers 4.19.14-200.fc28
  Fedora 29: kernel-headers 4.19.14-300.fc29

Fedora: new kernel-tools packages.
New packages are available:
  Fedora 28: kernel-tools 4.19.14-200.fc28
  Fedora 29: kernel-tools 4.19.14-300.fc29

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

Slackware: new kernel packages.
New packages are available:
  Slackware 14.2: kernel 4.4.172-i586-1

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 16/18: new linux-image-aws packages.
New packages are available:
  Ubuntu 16.04 LTS: linux-image-aws 4.15.0.1047.47
  Ubuntu 18.04 LTS: linux-image-aws 4.15.0.1047.46

Ubuntu: new linux-image-4.15.0 packages.
New packages are available:
  Ubuntu 16.04 LTS: linux-image-generic-hwe-16.04 4.15.0.62.82
  Ubuntu 18.04 LTS: linux-image-generic 4.15.0.62.64

Ubuntu: new linux-image-4.4.0 packages.
New packages are available:
  Ubuntu 14.04 LTS: linux-image-generic-lts-xenial 4.4.0.144.127
  Ubuntu 16.04 LTS: linux-image-generic 4.4.0.145.153

Wind River Linux: solution (21/05/2019).
The solution is indicated in information sources.
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

Computer vulnerabilities tracking service 

Vigil@nce provides networks vulnerabilities alerts. The Vigil@nce security watch publishes vulnerability bulletins about threats impacting the information system.