A flaw in all versions of the popular C standard libraries uClibe and uClibe-ng can allow for DNS poisoning attacks against target devices.
https://threatpost.com/dns-bug-millions-routers-iot-risk/179478/
The new Log4j vulnerability is similar to Log4Shell in that it also affects the logging library, but this DoS flaw has to do with Context Map lookups, not JNDI.
https://threatpost.com/third-log4j-bug-dos-apache-patch/177159/