Stable Linux releases lack existing security fixes because backporting them is time-consuming and often thankless work. We’re using Codex to reduce the backporting process time from days to hours per fix, empowering human patch reviewers to rapidly submit fixes for critical software like Ubuntu Long Term Support, Fedora, and the Linux kernel. By October 29, our project helped deliver fixes for 149 distinct CVEs into stable Linux kernel releases, and several fixes to Fedora and Ubuntu packages.