How to Fix Spectre Vulnerability on Linux Computers.

Spectre

Spectre is the latest vulnerability discovered in processors which allow amalicious application to trick another application into exposing its memory to read by the malicious application.

This vulnerability affects almost all the processor variants from Intel/AMD/ARM. Which means that all computers both Desktop/Laptop and SBC and all the smartphones are affected by this Vulnerability.

 

More information about this vulnerability can be found at https://spectreattack.com/

CVE-2017-5753 and CVE-2017-5715 are the official references to Spectre. CVE is the Standard for Information Security Vulnerability Names maintained by MITRE.

All OS manufacturers are releasing patches to fix these vulnerability, You can follow below steps to update the OS and patch the vulnerability.

Fix the Spectre on a CentOS/RHEL/Fedora/Oracle/Scientific Linux

Type the following yum command:

sudo yum update

You must reboot your Linux server using shutdown/reboot command:

sudo reboot

Run the following dnf command if you are using a Fedora Linux:

sudo dnf --refresh update kernel

OR

sudo dnf update

Reboot the Linux box:

sudo reboot
.

Fix the Spectre on a Debian/Ubuntu Linux.

Use the following apt-get command/apt command:

sudo apt-get update
sudo apt-get upgrade
sudo shutdown -r 0

Fix the Spectre on an Amazon Linux running on AWS

Just run yum command:

yum update kernel

 

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