Dear Tatsuhiro,
This is Lukas from the Debian LTS team. I've been working on LTS backports for CVE-2023-44487.
And while on it, I also backported your patches to Debian Stable (trixie) and Oldstable (bookworm).
After coordinating with the Debian Security Team (jmm specifically), they mentioned that you'd already been involved with preparing such backports for Debian (old-)stable.
Maybe you'd be interested in reviewing my work, so we can avoid duplication?
Trixie:
https://salsa.debian.org/debian/nghttp2/-/merge_requests/12
Please let me know what you think.
Best regards,
Lukas