Linux Kernel Continues To Offer Mitigation for Spectre Mitigation
Kernel 4.19 has added another family of Spectre vulnerabilities to its list of mitigating the mitigation.
Usually, you want to mitigate all possible vulnerabilities unless we are talking about Meltdown and Spectre which are a class or family of dozens of vulnerabilities. But what sysadmins hate more than these vulnerabilities are mitigations offered to these vulnerabilities. Some of these mitigations have a massive impact on performance, while not offering any significant protection.
Gauging the pros and cons, sysadmins have gone as far as asking the Linux kernel community to give them an option to disable these mitigations. The Linux kernel community always listens.
Linux Kernel 4.15 added the ability for sysadmins to disable the kernel's built-in mitigations for the Spectre v2 vulnerability, then Linux Kernel 4.17 offered the option to disable all mitigations for Spectre v4 and now Linux Kernel 4.19 allows admins to disable mitigations for Spectre v1.
You may or may not trust NSA, but they have a very decent guide on GitHub to help keep up with all Spectre related vulnerabilities.
Subscribe to our Linux Newsletters
Find Linux and Open Source Jobs
Subscribe to our ADMIN Newsletters
Support Our Work
Linux Magazine content is made possible with support from readers like you. Please consider contributing when you’ve found an article to be beneficial.
News
-
OSJH and LPI Release 2024 Open Source Pros Job Survey Results
See what open source professionals look for in a new role.
-
Proton 9.0-1 Released to Improve Gaming with Steam
The latest release of Proton 9 adds several improvements and fixes an issue that has been problematic for Linux users.
-
So Long Neofetch and Thanks for the Info
Today is a day that every Linux user who enjoys bragging about their system(s) will mourn, as Neofetch has come to an end.
-
Ubuntu 24.04 Comes with a “Flaw"
If you're thinking you might want to upgrade from your current Ubuntu release to the latest, there's something you might want to consider before doing so.
-
Canonical Releases Ubuntu 24.04
After a brief pause because of the XZ vulnerability, Ubuntu 24.04 is now available for install.
-
Linux Servers Targeted by Akira Ransomware
A group of bad actors who have already extorted $42 million have their sights set on the Linux platform.
-
TUXEDO Computers Unveils Linux Laptop Featuring AMD Ryzen CPU
This latest release is the first laptop to include the new CPU from Ryzen and Linux preinstalled.
-
XZ Gets the All-Clear
The back door xz vulnerability has been officially reverted for Fedora 40 and versions 38 and 39 were never affected.
-
Canonical Collaborates with Qualcomm on New Venture
This new joint effort is geared toward bringing Ubuntu and Ubuntu Core to Qualcomm-powered devices.
-
Kodi 21.0 Open-Source Entertainment Hub Released
After a year of development, the award-winning Kodi cross-platform, media center software is now available with many new additions and improvements.