RefluXFS: A Nine-Year-Old Linux Kernel Bug Found by AI in Weeks Affects 16.4 Million Systems
In June 2026, the Qualys Threat Research Unit joined Anthropic’s Project Glasswing. Tasking the Claude Mythos Preview model with hunting for a Dirty COW-style race, researchers identified a vulnerability in the Linux kernel that had remained undetected for nine years. The model successfully isolated the flaw in the XFS filesystem and generated a working local…