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Patch Your Kernel Without Touching Customer Uptime
KernelCare keeps your infrastructure secure while your customers’ sites stay online. No maintenance windows, no late-night patching, no explaining downtime.
10,762
Linux kernels supported
5,364
Vulnerabilities addressed
269,100
Live patches released
The Reboot Problem
Every Hosting Provider Knows
Kernel patches fix real security vulnerabilities, but applying them requires the reboot that customers hate. So patches get deferred.
Downtime = Lost Revenue
Every minute offline costs you money and customer trust
Global Customers, No Off-Hours
Someone is always using the server you need to restart
Deferred Patches = Growing Risk
Every week without patches increases your vulnerability exposure
Team
Burnout
2 AM maintenance windows drain your ops team
Kernel Security Without the Downtime
Live kernel patching applies security fixes instantly — without reboots or maintenance windows.
CVE Published
New vulnerability is disclosed
Patch Created
KernelCare team develops the fix
Applied In Memory
Server stays running
Secured
Vulnerability fixed, customers unaffected
GETTING STARTED
Simple Setup, Automatic Protection
Install the Agent
Run one command as root to deploy the lightweight KernelCare agent on your server.
$ curl -s https://repo.cl/kcare | bash
Patches Apply Automatically
KernelCare checks for new patches every 4 hours and applies them to the running kernel — no reboots or maintenance windows.
Monitor Through Radar
Track patch status, vulnerability exposure, and risk across your fleet from one dashboard.
Learn more about RadarKernelCare PatchesAll Popular Linux
Distros, Including:
Make Kernel Patching
a Non-Event
Try KernelCare on your infrastructure. See what it’s like when kernel security updates stop being a coordination problem and start being automatic.
Contact us for a 14-day trial.
FAQ
Common questions from hosting providers evaluating KernelCare
KernelCare is a live kernel patching solution that applies security updates in memory without requiring server reboots. For hosting providers, this means kernel CVEs get patched immediately while customer sites stay online — no maintenance windows, no downtime, no coordination headaches.
KernelCare applies patches directly to the running kernel in memory. When a new CVE patch becomes available, it downloads and installs automatically while your server continues operating normally. The vulnerability is actually fixed (not deferred or worked around) without any service interruption. Learn more about the live patching process.
Yes. Live kernel patching has been production-proven for over a decade. KernelCare has applied hundreds of thousands of patches across millions of servers with the reliability you'd expect from traditional patching. Every patch undergoes rigorous QA before release, and instant rollback is available if needed.
For kernel security patches, correct, no reboots required. Other updates like glibc or major OS upgrades may still require restarts, but those are far less frequent. Most hosting providers using KernelCare reduce their reboot frequency by 90% or more.
KernelCare supports 60+ Linux distributions including CloudLinux, AlmaLinux, Rocky Linux, RHEL, CentOS, Ubuntu, Debian, and Oracle Linux. If you're running CloudLinux, KernelCare integrates seamlessly as an add-on with the same management interface.
Patches typically deploy within hours of CVE disclosure, often before attackers have time to develop working exploits. This shrinks the vulnerability window from weeks (waiting for a maintenance window) to hours, significantly reducing your exposure to emerging threats.
KernelCare supports instant rollback without rebooting. If you encounter an issue with a patch, revert to the previous kernel state in seconds, diagnose the problem, and apply a fix when ready. This safety net exists, though it's rarely needed given the QA process patches undergo.
KernelCare pricing starts at $3.95 per server per month, with volume discounts available for larger fleets. When you calculate the cost of a single hour of downtime, or the engineer hours spent coordinating maintenance windows, the ROI is typically immediate and significant.
Start a 14-day free trial with instant license activation. Install the agent with a single command (no reboot required), and KernelCare begins protecting immediately. Most hosting providers complete setup in under 15 minutes per server.
