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 (on s390): privilege escalation

Synthesis of the vulnerability 

An attacker can bypass restrictions of the Linux kernel, in order to escalate his privileges.
Vulnerable software: Debian, Fedora, Linux, RHEL, Ubuntu.
Severity of this announce: 2/4.
Creation date: 29/04/2020.
Références of this computer vulnerability: CERTFR-2020-AVI-252, CERTFR-2020-AVI-281, CERTFR-2020-AVI-320, CERTFR-2020-AVI-355, CVE-2020-11884, DSA-4667-1, FEDORA-2020-16f9239805, FEDORA-2020-64d46a6e29, FEDORA-2020-b453269c4e, RHSA-2020:2102-01, RHSA-2020:2199-01, RHSA-2020:2429-01, USN-4342-1, USN-4343-1, USN-4345-1, VIGILANCE-VUL-32125.

Description of the vulnerability 

An attacker can bypass restrictions of the Linux kernel, in order to escalate his privileges.
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

This computer threat announce impacts software or systems such as Debian, Fedora, Linux, RHEL, Ubuntu.

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

Solutions for this threat 

Linux kernel: version 5.6.8.
The version 5.6.8 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.6.8.tar.xz

Linux kernel: version 5.4.36.
The version 5.4.36 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.36.tar.xz

Linux kernel: version 4.19.119.
The version 4.19.119 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.19.119.tar.xz

Debian 10: new linux packages.
New packages are available:
  Debian 10: linux 4.19.98-1+deb10u1

Fedora 30, 31, 32: new kernel packages.
New packages are available:
  Fedora 30: kernel 5.6.8-100.fc30
  Fedora 31: kernel 5.6.8-200.fc31
  Fedora 32: kernel 5.6.8-300.fc32

RHEL 8.0: new kernel packages.
New packages are available:
  RHEL 8.0: kernel 4.18.0-80.23.2.el8_0

RHEL 8.1: new kernel packages.
New packages are available:
  RHEL 8.1: kernel 4.18.0-147.13.2.el8_1

RHEL 8: new kernel packages.
New packages are available:
  RHEL 8.2: kernel 4.18.0-193.1.2.el8_2

Ubuntu: new linux-image-4.15.0 packages (29/04/2020).
New packages are available, as indicated in information sources.

Ubuntu: new linux-image-5.3.0 packages (29/04/2020).
New packages are available, as indicated in information sources.

Ubuntu: new linux-image-5.4.0-28 packages.
New packages are available, as indicated in information sources.

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)

Computer vulnerabilities tracking service 

Vigil@nce provides an applications vulnerabilities database. The Vigil@nce security watch publishes vulnerability bulletins about threats impacting the information system.