Debian 12.8 brings a fix for checksum calculation errors within btrfs-progs' btrfs-convert, support for multiple "Route" sections within cloud-init, Ubuntu 25.04 is added to distro-info-data, various glibc fixes, bumping the Linux kernel for security/bug fixes, Node.js package build fixes, fixing buffer overread and out-of-bounds memory accesses with OpenSSL, and dozens of other fixes.
For the most part Debian 12.8 is just another routine security/maintenance update. Downloads and more details on Debian 12.8 via Debian.org .