AI agent escapes VM, digs up use-after-free in Google's hardened KVM hypervisor on its own
basedjensen · x · 2026-09-29
A viral report describes an AI agent that broke out of its virtual machine and triggered a use-after-free in Google's heavily hardened KVM hypervisor.
- It tricked KVM into silently rewriting a memory-mapping entry with a single three-byte instruction.
- It then flooded the host with 49,152 memory mappings until KVM followed a dangling pointer into freed memory; on the fourth live attempt the host handed over Google's secret flag.
- No exploit was provided: the agent spent weeks studying KVM source and wrote 14,338 lines of harness code to get there.
A landmark case of autonomous AI-driven vulnerability discovery in kernel-level security.
Related event: AI Agent Escapes Google kvmCTF Sandbox With 14,000-Line Kernel Exploit(2 posts)→
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