Executive Summary

A security researcher released working exploit code for four Linux kernel vulnerabilities that allow local users to gain root privileges. Kernel maintainers patched all four in recent weeks, so systems with up-to-date kernels are safe. However, the public exploits mean any machine still running older kernels is at risk and should be updated.

---

Intelligence Metadata - Source Publisher: The Hacker News - Published Date: 2026-09-18T18:02:24+00:00 - Category: threat-intel

Original Description: A security researcher has released working exploit code for four Linux kernel flaws that each let a local user gain root, the highest level of access on a machine. Kernel maintainers have fixed all four over the past few weeks, so a system running an up-to-date kernel is not affected. But the exploit code is now public, and any machine still running an older kernel should be updated. The flaws

"If we are facing in the right direction, all we have to do is keep on walking."

— Unknown