Bloggers
Igor Seletskiy

Igor Seletskiy

CloudLinux is on a mission to make Linux secure, stable, and profitable, and Igor Seletskiy is at the helm of this undertaking. He is the CEO and founder of the company, and an innovator responsible for the strategic direction of the company and all products within the CloudLinux brand.

Igor is an accomplished technology guru focusing on Linux, kernel development, and the hosting industry. He is a frequent speaker at industry events, and has a successful track record of more than 15 years of delivering innovative products to market.

Igor Seletskiy's articles

by / Thursday, 08 December 2016
New vulnerability discovered - the fix for CVE-2016-8655 for CloudLinux OS 7 is here with KernelCare

The patch for CloudLinux OS 7 is here if you are running KernelCare. Fixed CloudLinux OS 7 kernel is coming soon. CloudLinux OS 5 & 6 are not affected.

A new vulnerability CVE-2016-8655 in the Linux kernel was discovered by Philip Pettersson. It is a race-condition in Linux...

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Topic: in CloudLinux OS Blog


by / Wednesday, 26 October 2016
How to fix Dirty COW without rebooting servers

Dirty Cow CVE-2016-5195 exploit is said to be the “Most serious” Linux privilege-escalation bug ever. Within a few days of its discovery, various Linux distributions have released patches to fix it, but to apply those, you need to reboot servers. You either need to cause downtime you...

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Topic: in KernelCare Blog


by / Tuesday, 25 October 2016
Nonprofits can now live patch kernels for free

In light of the recent Dirty Cow exploit, said by experts to be the “Most serious” Linux privilege-escalation bug ever, we’ve decided to push forward our prior plans to offer KernelCare for free for nonprofit organizations so that they can protect themselves from critical vulnerabilities...

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Topic: in KernelCare Blog


by / Monday, 24 October 2016
Live patching for your custom kernel

Do you want to use KernelCare for rebootless kernel updates? But what if you are running an unsupported distribution? What if your kernel is custom, self-compiled, special, or just old?

Look no further than KernelCare. It provides Custom Kernel Patching so that you can benefit from live patching...

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Topic: in KernelCare Blog


by / Saturday, 22 October 2016
KernelCare, Dirty Cow, systemtap and CentOS/RHEL/CL 5 - Important!!!

The systemtap scripts recommended by RedHat https://bugzilla.redhat.com/show_bug.cgi?id=1384344#c13 and many other people as workaround against CVE-2016-5195 DirtyCow might be ineffective against new variations of the attack like this one:

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Topic: in KernelCare Blog CloudLinux OS Blog


by / Tuesday, 30 August 2016
Hosting Industry Survey is now closed. Stand by for results.

Update: Hosting Industry Survey results can be found here.

This survey closed on Friday, September 9th. Once we compile all data, we will share the results of this survey with all respondents.

Thanks!

Igor 

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Topic: in CloudLinux OS Blog


by / Thursday, 11 August 2016
No single website can bring down your server

Learn the difference between LVE limits & Apache RLimits

What makes both shared hosting provider and its customers happy? Stable servers, of course!

The problem is that even a single site can easily bring the servers to a halt by consuming its CPU, memory, and IO resources. The best way to...

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Topic: in CloudLinux OS Blog


by / Friday, 15 July 2016
Running InfiniBand hardware? Your servers might be vulnerable.
Recently a flaw was found in Linux kernel 2.6.32 that allows local users to escalate their privileges for servers with InfiniBand. 
 
If your servers have InfiniBand and you are running CentOS/RedHat/CloudLinux 6, Virtuozzo/OpenVZ, Proxmox 2.x WITHOUT KernelCare, you are vulnerable. We recommend...

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Topic: in KernelCare Blog


by / Wednesday, 29 June 2016
New Snapshot feature improvement coming to cPanel users

This week users will see an enhancement to the CPU and Concurrent Connection section in cPanel: HTTP Snapshots. In addition to Process Lists and Database Queries Snapshots already released in the beta repo, Snapshots of HTTP queries in the Apache web server becomes available as part of the beta...

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Topic: in CloudLinux OS Blog


by / Monday, 27 June 2016
New vulnerability makes it easy to escape from the container

CVE-2016-4997 and CVE-2016-4998 were issued for a vulnerability that lets user inside container to escalate priveleges and escape the containment. The issue affects Virtuozzo, OpenVZ, LXC and Docker containers.

If you are running KernelCare -- your servers are already patched, and safe. If you...

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Topic: in KernelCare Blog


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