Attention All Linux Server Users,
A critical security vulnerability has been identified within the Linux kernel, affecting nearly all major distributions. Known as CVE-2026-31431 or “Copy Fail,” this flaw has received a Critical severity rating of 9.8/10.
What happened?
A glitch in how the Linux kernel copies data allows attackers to "overflow" memory. This can be used by hackers to bypass security, gain full Root (Administrative) access, and potentially take over your entire server or access sensitive data.
Is your server at risk?
If your server runs on any of the following operating systems, you must take immediate action:
- AlmaLinux, Rocky Linux, RHEL
- Ubuntu, Debian
- CloudLinux, Alpine, SUSE
What you need to do:
- Update your Kernel: Security patches have been released for most major OS versions.
- Reboot your System: Kernel updates do not take effect until the server is restarted.
- Verify your OS Advisory: Check the official security links below for specific instructions:
1. AlmaLinux: https://almalinux.org/blog/2026-05-01-cve-2026-31431-copy-fail/
2. AlpineLinux: https://security.alpinelinux.org/vuln/CVE-2026-314313.
3. CloudLinux: https://blog.cloudlinux.com/cve-2026-31431-copy-fail-kernel-update
4. Debian: https://security-tracker.debian.org/tracker/CVE-2026-31431
5. Red Hat Enterprise Linux:https://access.redhat.com/security/vulnerabilities/RHSB-2026-02
6. Rocky Linux: https://kb.ciq.com/article/rocky-linux/rl-cve-2026-31431-mitigation
7. SUSE: https://www.suse.com/security/cve/CVE-2026-31431.html
8. Ubuntu: https://ubuntu.com/security/CVE-2026-31431
Need Urgent Assistance?
At Ucartz, our priority is the security and stability of your infrastructure. If you are uncomfortable performing these updates yourself or are worried about potential downtime, our experts are standing by.
Contact Ucartz Support immediately to have our team audit and patch your servers for you.
Don't leave your data to chance; update your systems today.
