Buffer Overflow and Over-read Vulnerabilities

I've ported (stolen from KallistiOS) genromfs to build on Windows for ps2sdk-ports, but there may be potential bugs. Here are the problems. line 434: Check buffer boundaries if used in a loop including recursive loops (CWE-120, CWE-20). line 555 : Does not handle strings that are not \0-terminated; if given one it may perform an over-read (it could cause a crash if unprotected) (CWE-126). line 972 : Does not handle strings that are not \0-terminated; if given one it may perform an over-read (it could cause a crash if unprotected) (CWE-126). line 990 : Does not handle strings that are not \0-terminated; if given one it may perform an over-read (it could cause a crash if unprotected) (CWE-126). line 1037 : Does not handle strings that are not \0-terminated; if given one it may perform an over-read (it could cause a crash if unprotected) (CWE-126). How do I fix them or are there any work around's to fix them.