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Bad Epoll (CVE-2026-46242) is a race-condition use-after-free vulnerability in the Linux kernel's epoll subsystem that allows unprivileged users to escalate to root on both Linux and Android devices. It was reported by Jaeyoung Chung and was missed by Anthropic's Mythos AI.
Cloudflare engineers uncovered a race condition bug in the hyper HTTP library while debugging intermittent failures in their Images service, where large image transformations returned truncated responses. The fix required only four lines of code.
The author details the process of dumping, analyzing, and modifying HDD firmware to introduce a delay for an Xbox 360 exploit, covering hardware and software techniques without AI assistance.