OpenAI’s o3 AI Found a Zero-Day Vulnerability in the Linux Kernel, Official Patch Released

In Short

• A security researcher has discovered a novel security flaw in the Linux kernel using the OpenAI o3 reasoning model.
• The new vulnerability has been documented under CVE-2025-37899. An official patch has also been released.
• o3 processed 12,000 lines of code to analyze all the SMB command handlers to find the novel bug.