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Bad Epoll (CVE-2026-46242): Critical Linux Kernel Race Condition Enables Local Privilege Escalation to Root

By

HackMoN Ai

1d ago· 9 min readenNews
technologycybersecuritynewslinux kernel

Summary

A newly disclosed Linux kernel vulnerability (CVE-2026-46242) called "Bad Epoll" resides in the eventpoll subsystem, allowing any unprivileged local user to escalate privileges to root on affected Linux systems including desktops, servers, and Android devices. The flaw boasts 99% exploit reliability and can be triggered from within containers, making it a critical security concern for the Linux ecosystem.

Source

bskyBad Epoll (CVE-2026-46242): Critical Linux Kernel Race Condition Enables Local Privilege Escalation to Rootundercodetesting.com

Key quotes

· 3 pulled
A newly disclosed Linux kernel flaw, dubbed 'Bad Epoll' and officially tracked as CVE-2026-46242, allows any unprivileged local user to escalate privileges to root on affected Linux systems
What makes this flaw particularly alarming is its 99% exploit reliability
The vulnerability resides in the eventpoll subsystem, a core component that powers high-performance I/O operations across network services, web browsers, and proxy servers
Snippet from the RSS feed
Bad Epoll (CVE-2026-46242): The 99% Reliable Linux Kernel Race That Puts Root in Every User's Hands + Video - "Undercode Testing": Monitor hackers like a pro.

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