Hello Linux users,

Ubuntu users are at heightened risk this week, as several critical vulnerabilities have been found and fixed in the Linux kernel, primarily affecting Microsoft Azure cloud systems in Ubuntu 16.04 (Extended Security maintenance) and Ubuntu 1804 ESM.

These bugs put impacted systems at risk of data theft and downtime. 

To help you discern if you are at risk and take proactive measures to secure your systems, I'll explain:

  • The flaws discovered and their impact.
  • How to identify which Ubuntu version you are running.
  • How to update your systems to protect against these bugs.

Read on to gain critical insights that will keep you a step ahead of attackers!

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Stay safe out there,

Brittany Signature 150 Esm W150

Linux Kernel

The Discovery 

Multiple critical vulnerabilities have been found and fixed in the Linux kernel, primarily affecting Microsoft Azure cloud systems in Ubuntu 16.04 (Extended Security maintenance) and Ubuntu 1804 ESM. It is critical that admins determine which version of Ubuntu they are running to discern if they are at risk.

LinuxKernel Esm W206

The Impact

These bugs put impacted systems at risk of:

  • Denial of service (DoS) due to system crashes or resource exhaustion.
  • Exposure of sensitive information through the exploitation of information disclosure vulnerabilities.
  • Execution of arbitrary code could compromise the integrity and security of the system.

The Fix

Critical security updates have been released to mitigate these issues. Admins should update their systems immediately to safeguard their sensitive data and the availability of their systems. Ubuntu users can follow these steps to update their systems.

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