New "Bad Epoll" Linux Kernel Flaw Lets Unprivileged Users Gain Root, Hits Android
A critical Linux kernel vulnerability known as 'Bad Epoll' or 'DirtyClone' allows unprivileged users to gain root access on servers and Android devices.
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The brief
A new zero-day vulnerability, identified as DirtyClone (CVE-2026-43503), enables local privilege escalation to root on major Linux distributions and Android devices. The flaw, also referred to as 'Bad Epoll,' is described as a kernel race bug.
Coverage from Tech Times, The Hacker News, and CyberSecurityNews emphasizes the flaw's impact, with Tech Times reporting a 99% root exploit rate and noting that the bug bypassed AI auditing. Other reporting from SecurityWeek and SQ Magazine highlights the vulnerability as a critical issue giving hackers instant root access.
Attention is now on mitigation and patching. Canonical has confirmed that Ubuntu fixes for the DirtyClone flaw are available.
Synthesized by Archynetys from the headlines below under a strict no-invention contract. ✓ fact-checked: all claims supported by sources Updated 1d ago.
Quick answers
What is the official CVE identifier for this vulnerability?
The vulnerability is identified as CVE-2026-43503.
Which platforms are affected by the flaw?
The flaw affects Linux servers, Android devices, and major Linux distributions.
Has a fix been released for Ubuntu?
Yes, Canonical has confirmed that fixes for Ubuntu are available.
Coverage (8)
- Fragnesia Korben · 2d ago
- Bad Epoll: Kernel Race Bug Beats AI Auditing, Hits 99% Root Exploit Rate Tech Times · 2d ago
- New "Bad Epoll" 0-Day Vulnerability Allows Root Access on Linux Servers and Android Devices CyberSecurityNews · 2d ago
- DirtyClone (CVE-2026-43503): Critical Linux Kernel Vulnerability Enables Local Privilege Escalation to Root on Major Distributions Rescana · 2d ago
- Canonical Confirms Ubuntu Fixes for DirtyClone Linux Kernel Flaw Linuxiac · 2d ago
- Critical Linux pedit COW Bug Gives Hackers Instant Root Access SQ Magazine · 2d ago
- ‘DirtyClone’ Linux Kernel Vulnerability Leads to Root Access SecurityWeek · 2d ago
- New "Bad Epoll" Linux Kernel Flaw Lets Unprivileged Users Gain Root, Hits Android The Hacker News · 2d ago
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