Ubuntu
Linux Kernel Vulnerability (VMSCAPE) Exposes Host OS Information
First seen 23 Nov 2025, 03:36 UTC
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A vulnerability in the Linux kernel, identified as VMSCAPE, allows attackers in guest VMs to potentially expose sensitive information from the host operating system. Discovered by researchers Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi, this flaw is linked to insufficient branch predictor isolation between guest and userspace hypervisors on certain processors.
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