First posted on Monday, 11 May 2026
This advisory is provided as a courtesy.
We want to bring to your attention another newly discovered vulnerability affecting major Linux OS distributions. The vulnerability, known as "Dirty Frag", has been assigned CVE numbers: CVE-2026-43284 and CVE-2026-43500, and affecting most, if not all, Linux distribution going back several years.
Affected Software
Most major Linux distributions such as Ubuntu (certain releases) and AlmaLinux are affected.
How to Fix the Problem
Update to the latest kernel version depending on the Linux OS.
On Ubuntu systems:
apt update
apt upgrade
apt dist-upgrade (to install all patches)
On AlmaLinux systems:
dnf clean all
dnf update kernel -y
Note: The patches might not be available for older distributions and operating systems that are already EOL (end-of-life) and no longer supported, such as CentOS systems. For this one, you need to upgrade to supported operating systems.
For users of Linux-based hosting control panel such as cPanel and Plesk, please also update your WHM/cPanel and Plesk to the latest version to fix this vulnerability.
More Information
Dirty Frag Linux kernel local privilege escalation vulnerability mitigations
Dirty Frag (CVE-2026-43284, CVE-2026-43500) Patches Released
Notes:
We will be performing urgent update to patch all our internal servers in the next couple of hours.
Request Assistance
If you are running vulnerable Linux distributions and need our assistance to patch it up or to perform the workaround, we can do it for you at a one-time discounted fee of $30. Please submit your order at Order -> Additional Services -> Vulnerability Fix - Linux Kernel Vulnerability - $30.
Note: This service is only applicable for supported operating systems that is generally still maintained and not EOL. Please check with us first by opening a ticket before ordering this service.
Alternatively, please first open a support ticket and give us the hostname, IP address and OS template. You can find this information on your servelet's control panel.
For example:
Hostname: yourservelethostname
IP Address: 103.25.202.81
OS Template: Ubuntu 22.04 LTS (64-bit)
Thank you.
??
English
Bahasa Indonesia
???
Espanol