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New "Bad Epoll" Linux Kernel Flaw Lets Unprivileged Users Gain Root, Hits Android

A critical Linux kernel vulnerability, identified as DirtyClone or Bad Epoll, is enabling unauthorized root-level access across servers and Android devices.

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The brief

A new kernel race condition, tracked as CVE-2026-43503 and referred to as DirtyClone, Bad Epoll, or Fragnesia, allows unprivileged users to gain root access. The vulnerability affects both Linux distributions and Android devices.

Coverage from CyberSecurityNews, Tech Times, Rescana, SQ Magazine, Linuxiac, SecurityWeek, and The Hacker News highlights the severity of the flaw, noting that it bypassed AI auditing tools. Canonical has reportedly confirmed that fixes for Ubuntu are currently available.

Future developments will focus on the deployment of patches across other affected Linux distributions and Android ecosystem stakeholders. Coverage does not yet specify the full list of impacted software versions.

Synthesized by PULSE from the headlines below under a strict no-invention contract. ✓ fact-checked: all claims supported by sources Updated 88d ago.

Quick answers

What is DirtyClone?

DirtyClone is a critical vulnerability identified as CVE-2026-43503 that allows local privilege escalation to root on Linux-based systems.

Which devices are affected?

The flaw impacts Linux servers, major Linux distributions, and Android devices.

Are there fixes available?

Canonical has confirmed that fixes for Ubuntu are available, though coverage does not specify the status of other platforms.

Coverage (8)

Topics

Linux DirtyClone CVE-2026-43503 Android Cybersecurity

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