Official release posted: 2nd May 2025
Since the manufacturer did not provide a detailed description, is the situation discovered by the manufacturer similar to this article details?
Preface:
Nvidia is a major player in the GPU market, known for its high-performance graphics cards used in gaming, professional visualization, data centers, and AI applications.
Imagination Technologies specializes in providing GPU processor solutions for graphics and AI vision applications. They focus on mobile devices, automotive, and embedded systems.
Background: All PowerVR GPUs are based on unique Tile Based Deferred Rendering (TBDR) architecture; the only true deferred rendering GPU architecture in the world. True deferred rendering GPU architecture, specifically Tile-Based Deferred Rendering (TBDR), is a unique approach used by PowerVR GPUs.
Tile-Based Deferred Rendering (TBDR)
– Tile-Based Rendering: The screen is divided into small tiles, and each tile is processed individually. This allows the GPU to store data like color and depth buffers in internal memory, reducing the need for frequent access to system memory. This results in lower energy consumption and higher performance.
– Deferred Rendering: This technique defers texturing and shading operations until the visibility of each pixel in the tile is determined. Only the pixels that will be visible to the user consume processing resources, which enhances efficiency.
Vulnerability details: Software installed and run as a non-privileged user may conduct ptrace system calls to issue writes to GPU origin read only memory.
Resolution: The DDK Kernel module has been updated to address this improper use of ptrace system call to prevent write requests to read-only memory.
Official announcement: Please see the link for details –