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New GPUBreach Attack Enables System

Cybersecuritynews •Abinaya • April 7, 2026

A severe vulnerability, dubbed GPUBreach, that allows attackers to achieve a full system compromise, including a root shell. Scheduled for presentation at the IEEE Symposium on Security and Privacy, researchers from the University of Toronto show that this exploit elevates GPU Rowhammer attacks from simple data corruption to critical privilege escalation. Historically, GPU Rowhammer attacks […]

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GPUBreach: New GPU Rowhammer Attack Enables Full System Compromise Researchers from the University of Toronto have unveiled a new attack named GPUBreach that exploits Rowhammer vulnerabilities in Nvidia's GDDR6 memory. This attack allows privilege escalation from an unprivileged CUDA kernel to root access on the host system without needing to disable the Input-Output Memory Management Unit (IOMMU). By corrupting GPU page tables, attackers can gain arbitrary read/write access to GPU memory and subsequently exploit memory-safety bugs in the Nvidia driver to achieve full system compromise. The attack can manipulate sensitive data, including cryptographic keys and machine learning model weights, significantly impacting AI workloads. The findings will be presented at the IEEE Symposium on Security & Privacy on April 13, 2026. Nvidia has acknowledged the issue and may update its security advisory, while Google awarded the researchers a $600 bug bounty for their discovery. Despite the severity, the current risk level is considered manageable by some industry players. 11 sources 67

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New GPUBreach Attack Enables System

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