Testing race conditions with memory access tracing and stack-based delay injection

Posted by Jann Horn Many security bugs are race conditions, where multi-threaded execution has to occur with the right interleaving for a negative effect to appear. This creates challenges for several use cases: Confirming bug candidates that have been discovered manually or through static...

FreeType Glyph Parallel Range Scanner for Font Parsing Stability Testing

This Python tool performs automated glyph parsing validation across a configurable range of glyph indices within a font file using FreeType bindings. It loads the target font, extracts metadata such as family name, style, and glyph count, then iteratively tests glyph loading operations using...