Testing stable backports for netfilter

Hello netfilter developers,

Do we have any tests that we could run before sending a stable backport in netfilter/ subsystem to stable@vger ?

Let us say we have a CVE fix which is only backported till 5.10.y but it is needed is 5.4.y and 4.19.y, the backport might need to easy to make, just fixing some conflicts due to contextual changes or missing commits.

One question that comes in my mind is did I test that particular code, often testing that particular code is tough unless the reproducer is public. So I thought it would be good to learn about any netfilter test suite(set of tests) to run before sending a backport to stable kernel which might ensure we don't introduce regressions.

Thanks, Harshit