Description
PVRIC (PowerVR Image Compression) on Imagination 2018 and later GPU devices offers software-transparent compression that enables cross-origin pixel-stealing attacks against feTurbulence and feBlend in the SVG Filter specification, aka a GPU.zip issue. For example, attackers can sometimes accurately determine text contained on a web page from one origin if they control a resource from a different origin.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | nvidia-graphics-drivers-390 +8 | No fix yet | — |
| Ubuntu 20.04 LTS | nvidia-graphics-drivers-340 +9 | No fix yet | — |
| Ubuntu 16.04 LTS | nvidia-graphics-drivers-304 +1 | No fix yet | — |
References
- https://www.hertzbleed.com/gpu.zip/
- https://www.hertzbleed.com/gpu.zip/GPU-zip.pdf
- https://github.com/UT-Security/gpu-zip
- https://www.w3.org/TR/filter-effects-1/
- https://blog.imaginationtech.com/reducing-bandwidth-pvric/
- https://blog.imaginationtech.com/introducing-pvric4-taking-image-compression-to-the-next-level/
- https://arstechnica.com/security/2023/09/gpus-from-all-major-suppliers-are-vulnerable-to-new-pixel-stealing-attack/
- https://news.ycombinator.com/item?id=37663159
- https://www.bleepingcomputer.com/news/security/modern-gpus-vulnerable-to-new-gpuzip-side-channel-attack/