[servus45678981]

Then I am switching to a feature phone Nokia by HMD

[alephnerd]

> feature phone Nokia by HMD

Sure, but it runs Android Go (embedded Android) or KaiOS (embedded Linux) out of the box.

Any vulnerabilities that arises in Linux can also be weaponized on those OSes as well depending on when the OS image was deployed and whether or not the OEM supports upgrades and patches (generally they don't)

[greenish_shores]

Check out postmarketOS. Can run on a Nokia you're specifying, but not only :)

[alephnerd]

Equally open to vulnerabilities. For example, there's an unpatched GLIBC vulnerability in Alpine Linux (which is the distro postmarket is built on).