[FEATURE] Use safer string manipulation functions in system/settings #3109
Description
Is your feature request related to a problem? Please describe.
The system/settings module/library uses unsafe C string manipulation functions (eg. strcmp() or strlen()) on potentially user-accessible data, creating a security hazard.
Describe the solution you'd like
The maximum key/value lengths are known at compile time (Kconfig parameters), meaning we could use safer strnlen() and strncmp() functions.
Describe alternatives you've considered
No response
Verification
- I have verified before submitting the report.