Well, 5.17 is no LTS either, so you're running an EOL branch kernel that is very likely to suffer from some amount of vulnerabilities as well:
Linux 5.17 CVEs.
If your device is properly firewalled and doesn't do anything fancy then you might be fine with that. Me personally I really don't like running unmaintained kernels on any device.
I have submitted a
pull request updating linux-aarch64 to the latest stable kernel (6.1.8) but, unsurprisingly, it has been ignored so far.
Edit: I've learned that the Espressobin is ARMv8 as well. So if you're running linux-aarch64 and would like to give 6.1.8 a try I'm happy to share the binary package(s). Took me 5+ hours to build natively on an Odroid C4.