Debian GNU/Linux 10.9 comes about two months after Debian GNU/Linux 10.8.
10.9 provides the Debian GNU/Linux community with up-to-date installation and live images that include all the latest security updates and bug fixes released through the stable software repositories of the Debian GNU/Linux 10 Buster operating system series during this time. This release consists of 30 security updates and 45 updated packages with miscellaneous bug fixes, including a patched GRUB2 bootloader against some recently disclosed Secure Boot vulnerabilities.