vulnerability
New "Bad Epoll" Linux Kernel Flaw Lets Unprivileged Users Gain Root, Hits Android
High
Summary
A newly discovered Linux kernel vulnerability, dubbed "Bad Epoll" (CVE-2026-46242), allows unprivileged users to gain root access on systems, including Android devices. The flaw, a "use-after-free" bug, was identified by Jaeyoung Chung and exploited through a carefully timed attack. While initially a zero-day, the vulnerability’s complexity and narrow exploit window highlight the ongoing challenges in securing the Linux kernel and the potential for AI to miss critical vulnerabilities.
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