I fix bugs in other people's open-source projects: firmware and RTOS code, build and packaging tools, and language runtimes.
Highlights
- Reported CVE-2026-44726 to Deno (GHSA-chqv-56wv-7564) and wrote the merged fix, deno#32838.
- 56 merged pull requests across 36 upstream projects, including Deno, Apache NuttX, Apache Airflow, Zephyr, ESPHome, ninja, Meson, SCons, pip tooling, and Gitea.
- Most of these come with a regression test and go through the project's own review.
Selected merged contributions
| Project | What | PR |
|---|---|---|
| Deno | Keep the TLS upgrade state when a connection retries (security fix) | #32838 |
| riscv-isa-sim (Spike) | mstateen0 P1P13/ENVCFG bits read as zero when their CSRs don't exist | #2467 |
| rp-hal | Fix overflow in the RP2040 UART fractional baud-rate divisor | #1012 |
| Apache NuttX | ESP32-S3 SPI: make the CS/MOSI/MISO pin fields signed | #20541 |
| ESPHome | Fix shifted fan speeds in the Mitsubishi MSC heat-pump IR protocol | #20460 |
| Nuitka | getattr() default applies only to AttributeError, matching CPython |
#4078 |
| Apache Airflow | Beam async hook no longer launches pipelines through a shell | #72510 |
| ninja | ninja_syntax: escape paths in Writer.default |
#2837 |
Areas: embedded and RTOS (NuttX, Zephyr, ESPHome, embedded Rust), RISC-V, build systems and Python packaging (ninja, Meson, SCons, pip/virtualenv/pdm, PyInstaller), runtimes and security (Deno, Nuitka).
I use AI tools in my workflow, and I review and test everything I submit.
Contact: lzy00419@outlook.com