Critical PwnEscape Linux Kernel Vulnerability Lets Guest VMs Read Host Memory

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Critical PwnEscape Linux Kernel Vulnerability Lets Guest VMs Read Host Memory

October 15, 2026 dirk 0 Comments 3 tags

Critical PwnEscape Linux Kernel Vulnerability Lets Guest VMs Read Host Memory

A newly disclosed critical flaw in the Linux kernel allows code inside a virtual machine to read memory on the host computer it runs on. A researcher demonstrated the leak against Vercel’s live cloud sandboxes, and Vercel confirmed it.

The flaw, now tracked as CVE-2026-99999 and nicknamed PwnEscape, is in the Linux kernel’s networking code, not in any one cloud’s setup, so it reaches the shared

Source: The Hacker News

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