Reminder to upgrade old KernelCare agent - TuxCare

php2shell patches (CVE-2026-109618 and CVE-2026-109619) for EOL PHP are out now. With sales replies slower than usual due to high demand, the fastest route to patched packages is to buy ELS for Runtimes online (opens in new tab). Read the patch FAQ

Go straight to an AI summary of this blog post instead

  • Summarize this post with Perplexity
  • Summarize this post with Gemini
KernelCareUpdate
If you are running kcarectl versions from 2.10-1 to 2.11-3, please upgrade to the latest version by running:

  • for rpm based servers – yum install -y kernelcare
  • for pkg based servers – apt-get install kernelcare
 These versions will no longer receive kernel patches due to their buggy mechanism of module inversion. The Bug causes a new module, delivered as a part of the latest patch-sets, being neglected and not loaded. The “old” module interpreted the new patch data in a wrong way, therefore the kernel might crash.
If your servers are still running these outdated agent versions – please update immediately.
Otherwise, you will start getting “Unknown Kernel” notification instead of new patches. From the moment the KernelCare agent (kcarectl) is upgraded, the patch delivery on your servers will be resumed.

Join 4,500+ Linux & Open Source Professionals!

2x a month. No spam.

Table of Contents
Get the open-source security answers you need

Join 4,500+ Linux & Open Source Professionals!

2x a month. No spam.