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2 bookmarks tagged cs/systems
article
·
Phrack
·
39 min
VM escape - QEMU Case Study
This Phrack article provides an in-depth analysis and working exploits for two QEMU vulnerabilities (CVE-2015-5165, a memory leak in the RTL8139 network card emulator, and CVE-2015-7504, a heap-based overflow in the PCNET emulator). The authors demonstrate how chaining these flaws allows an attacker to escape from a guest virtual machine and achieve code execution on the host, detailing the QEMU memory layout, exploitation techniques, and limitations.
cs
security
systems
2026-09-19
article
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horace.io
·
17 min
Making Deep Learning go Brrrr From First Principles
An in-depth guide to optimizing deep learning performance by reasoning from first principles about hardware bottlenecks. It breaks down GPU utilization into three regimes—compute, memory bandwidth, and overhead—explaining how FLOPS growth has outpaced memory bandwidth, why matmuls dominate workloads, and how understanding these constraints guides whether techniques like operator fusion or kernel rewriting will actually yield speedups. Aimed at ML systems engineers, it uses PyTorch and NVIDIA hardware as concrete examples.
ml
systems
hardware
2026-09-04
