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Security · Updated 16 Oct, 01:54 am IST

Critical Linux kernel flaw lets guest VMs read host memory (PwnEscape)

Image: The Hacker News

Why it matters for readers: It explains how a software bug at the kernel level can let one VM read another machine's memory.

  • The vulnerability allows code running inside a guest VM to read host memory.1
  • The issue is tracked as CVE-2026-99999 and has been nicknamed PwnEscape.1
  • A researcher demonstrated the leak against Vercel's live cloud sandboxes and Vercel confirmed the demonstration.1
  • The flaw exists in the Linux kernel's networking code, not in a single cloud provider's configuration.1
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