# Critical PwnEscape Linux Kernel Vulnerability Lets Guest VMs Read Host Memory

**URL:** <https://forums.thehomestack.io/t/critical-pwnescape-linux-kernel-vulnerability-lets-guest-vms-read-host-memory/26443>\
**Category:** The Hacker News\
**Created:** [October 15, 2026, 8:52pm UTC](https://forums.thehomestack.io/t/critical-pwnescape-linux-kernel-vulnerability-lets-guest-vms-read-host-memory/26443 "2026-10-15T20:52:48Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![robinhood1995](https://forums.thehomestack.io/letter_avatar_proxy/v4/letter/r/48db29/32.png) [@robinhood1995](https://forums.thehomestack.io/u/robinhood1995)\
**Post date:** [October 15, 2026, 8:52pm UTC](https://forums.thehomestack.io/t/critical-pwnescape-linux-kernel-vulnerability-lets-guest-vms-read-host-memory/26443/1 "2026-10-15T20:52:48Z")

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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

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This is a companion discussion topic for the original entry at [https://thehackernews.com/2026/10/critical-pwnescape-linux-kernel.html](https://thehackernews.com/2026/10/critical-pwnescape-linux-kernel.html)