Back Gbhackers

GPUBreach Attack Could Lead to Full System Takeover and Root Shell Access

Gbhackers •Divya • April 7, 2026

A newly discovered vulnerability dubbed “GPUBreach” demonstrates that GPU-based Rowhammer attacks can now achieve complete system compromise. Scheduled for presentation at the IEEE Symposium on Security & Privacy in 2026, University of Toronto researchers revealed how manipulating GPU memory can lead to a full CPU root shell. Most alarmingly, this exploit successfully bypasses standard hardware […]

The full story

This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

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

GPUBreach Attack Could Lead to Full System Takeover and Root Shell Access

The full story

Extracted Entities

MITRE ATT&CK (1)

Tools (1)