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

Type the following yum command:


$ uname -r
$ sudo yum update

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


$ sudo reboot
$ uname -r


Verify all 3 CVEs (you must see the output:


$ rpm -q --changelog kernel | egrep 'CVE-2017-5715|CVE-2017-5753|CVE-2017-5754'


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


$ sudo dnf --refresh update kernel




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
# reboot

Fix the Spectre on an Arch Linux

Just run Pacman command:


# pacman -Syu
# reboot
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