Mind the Gap: a Practical Attack on GGUF Quantization

With the increasing size of frontier LLMs, post-training quantization has become the standard for memory-efficient deployment. Recent work has shown that basic rounding-based quantization schemes pose security risks, as they can be exploited to inject malicious behaviors into quantized models tha...

GHSA-4C4G-CRQM-XRXW Use of unitialized value in TFLite

Impact All TFLite operations that use quantization can be made to use unitialized values. For example: cc const auto affinequantization = reinterpretcast filter-quantization.params; The issue stems from the fact that quantization.params is only valid if quantization.type is different that...

Making JPEG Images Copy-Evident

A group of academic researchers at the University of Cambridge has developed a new technique for making JPEG images copy-evident, so that users can tell whether an image has been recompressed and copied. The technique, presented in a paper by Andrew B. Lewis and Markus G. Kuhn, relies on a comple...