Bad Epoll – Critical Linux Kernel Bug Lets Local Users Gain Root (AI Missed It)

Security researchers have disclosed Bad Epoll, a critical Linux kernel vulnerability that allows a local attacker to gain root privileges.

The bug affects the kernel's epoll subsystem and highlights how subtle race-condition vulnerabilities can remain hidden for years. Interestingly, Anthropic's AI security system (Mythos) found a different bug in the same codebase but missed this one.

If you run Linux servers, desktops, Android devices, or self-hosted services, it's worth checking whether your distribution has released a patched kernel.

Read more: https://digitalescapetools.com/2026/07/bad-epoll-kernel-bug-anthropic-mythos-missed.html