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: overload via Zero Length Bvec

Synthesis of the vulnerability 

An attacker can trigger an overload via Zero Length Bvec of the Linux kernel, in order to trigger a denial of service.
Impacted systems: Debian, Linux, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this alert: 1/4.
Creation date: 28/09/2020.
Références of this alert: CERTFR-2020-AVI-614, CERTFR-2020-AVI-637, CERTFR-2020-AVI-642, CERTFR-2020-AVI-668, CVE-2020-25641, DLA-2385-1, openSUSE-SU-2020:1655-1, openSUSE-SU-2020:1698-1, SUSE-SU-2020:2904-1, SUSE-SU-2020:2905-1, SUSE-SU-2020:2906-1, SUSE-SU-2020:2907-1, SUSE-SU-2020:2980-1, SUSE-SU-2020:2999-1, SUSE-SU-2020:3014-1, USN-4576-1, VIGILANCE-VUL-33443.

Description of the vulnerability 

An attacker can trigger an overload via Zero Length Bvec of the Linux kernel, in order to trigger a denial of service.
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

This computer weakness alert impacts software or systems such as Debian, Linux, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

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

Solutions for this threat 

Linux kernel: version 5.8.8.
The version 5.8.8 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 5.4.64.
The version 5.4.64 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 4.19.144.
The version 4.19.144 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: patch for Zero Length Bvec.
A patch is indicated in information sources.

Debian 9: new linux-4.19 packages.
New packages are available:
  Debian 9: linux-4.19 4.19.146-1~deb9u1

openSUSE Leap 15.1: new kernel packages (12/10/2020).
New packages are available:
  openSUSE Leap 15.1: kernel 4.12.14-lp151.28.71.1

openSUSE Leap 15.2: new kernel packages (20/10/2020).
New packages are available:
  openSUSE Leap 15.2: kernel 5.3.18-lp152.47.2

SUSE LE 12 SP5: new kernel packages (13/10/2020).
New packages are available:
  SUSE LE 12 SP5: kernel 4.12.14-122.41.1

SUSE LE 12 SP5: new kerne-rt packages.
New packages are available:
  SUSE LE 12 SP5: kernel-rt 4.12.14-10.19.1

SUSE LE 15 SP1: new kernel-azure packages.
New packages are available:
  SUSE LE 15 SP1: kernel-azure 4.12.14-8.47.1

SUSE LE 15 SP1: new kernel packages.
New packages are available:
  SUSE LE 15 SP1: kernel 4.12.14-197.61.1

SUSE LE 15 SP1: new kernel-rt packages (23/10/2020).
New packages are available:
  SUSE LE 15 SP1: kernel-rt 4.12.14-14.36.1

SUSE LE 15 SP2: new kernel packages.
New packages are available:
  SUSE LE 15 SP2: kernel 5.3.18-24.29.2

Ubuntu: new linux-image-5.4.0 packages.
New packages are available:
  Ubuntu 18.04 LTS: linux-image-generic-hwe-18.04 5.4.0.51.56~18.04.45
  Ubuntu 20.04 LTS: linux-image-generic 5.4.0.51.54
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

Computer vulnerabilities tracking service 

Vigil@nce provides networks vulnerabilities bulletins. The technology watch team tracks security threats targeting the computer system.