Developer Tutorial: Live patching Debian 10 Linux kernel with Kpatch

Jan 27, 2020 2:28:00 PM / by Paul Jacobs posted in Developer Blog

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Introduction

Live patching is a way of updating a Linux kernel without interruption.

Because kernel updates don’t take effect until the system is rebooted, Linux kernel live patching is most commonly used to patch severe Linux kernel vulnerabilities without rebooting servers.

Aside from improved service continuity and uptime, organizations with large server fleets also use live patching to avoid the administrative overhead associated with the coordination and planning needed to reboot multiple systems.

This tutorial will show how to use Kpatch to change the behavior of a running Debian 10 kernel without stopping it, changing the contents of /proc/uptime (and the uptime command) so that the system’s reported uptime is 10 years greater.

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Reboot Server Now or Later? (Neither, thanks)

Dec 19, 2019 5:36:54 PM / by Alexandra Mitroshkina posted in KernelCare, KernelCare Blog, AWS_KernelCare, Live Patching, News

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Were you at AWS re:Invent 2019?

I was, and it was a revelation.

“Will you reboot your Linux server in the next 30 days?”

That’s what I asked almost everyone who came to the KernelCare stand.

A third of you said yes. The main reason? Compliance.

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Zombieload 2: The Patches for Centos7, Centos7-Plus, RHEL7 & OEL 7 are in production

Dec 12, 2019 1:54:08 PM / by KernelCare Team posted in KernelCare, CVE, MDS, Zombieload, Live Patching

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KernelCare Team has released Centos7, Centos7-Plus, RHEL7, OEL 7 patches for CVE-2018-12207 to the production feed.

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Zombieload 2: The Patches for CVE-2018-12207 are in the Test Feed!

Dec 2, 2019 3:19:51 PM / by KernelCare Team posted in KernelCare, CVE, MDS, Zombieload, Live Patching

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KernelCare Team has released Centos7, Centos7-Plus, RHEL7, OEL 7 patches for CVE-2018-12207 to the test feed. The KernelCare test feed makes it possible to start using new patches earlier.

To install patches from the test feed, run the command:

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Introducing KernelCare+: a premium subscription with glibc and OpenSSL patching + MORE

Nov 19, 2019 9:37:41 PM / by Alexandra Mitroshkina posted in KernelCare, KernelCarePlus

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Available in March 2020. Learn more about what's included in the package below.

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Zombieload 2: New set of Intel hardware vulnerabilities. KernelCare Team is on it!

Nov 13, 2019 5:11:29 PM / by KernelCare Team posted in KernelCare, CVE, MDS, Zombieload, Live Patching

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We’ve just heard of a new bunch of Intel CPU vulnerabilities and we want you to know the KernelCare team have swung into action to create patches for them.
Subscribe to our blog to get instant update.
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Arm-based Microprocessors Need Live Kernel Patching

Nov 12, 2019 7:00:00 AM / by KernelCare Team

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Most IoT devices run on Arm-based processors. 71.8% of these processors use Linux as their operating system (OS). 

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Linux Kernel 5.4 to Be Released by End of November 2019

Nov 6, 2019 8:31:52 PM / by KernelCare Team

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The Linux Kernel 5.4 is nearly complete! It is expected to debut as stable by the end of November. It will mark the last major stable kernel release of 2019.

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How Kernelcare Fits Neatly into the VMware Cloud on AWS

Nov 4, 2019 10:21:58 PM / by KernelCare Team

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During the second quarter of 2019, KernelCare became officially validated and available for customers of VMware Cloud™ on Amazon Web Services (AWS). VMware Cloud is VMware’s enterprise virtualization suite, built especially for Amazon’s AWS cloud infrastructure. VMware Cloud on AWS is the natural choice for mission-critical, always-on application services, offering distributed load balancing, dynamic resource allocation, and easy management. Organizations use services like VMware Cloud on AWS to deploy hybrid cloud service stacks and data centres. Its familiar vSphere operating environment makes it easy to migrate mission-critical services and applications.

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5 Things to See at ELC Europe 2019

Oct 29, 2019 6:13:02 AM / by KernelCare Team

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Calling all Europe-based Embedded Linux users! On October 28–30, at the Convention Center in Lyon, France will host the Embedded Linux Conference (ELC) Europe 2019. ELC is a premier vendor-neutral tech conference, where experts and developers working on embedded Linux and industrial IoT products gather for education and collaboration. This is a packed, innovation-focussed event. If you’re attending, we figured you might need some guidance. Here are five tips and tricks:

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