Safety critical standards indeed forbid memory allocation usually. If you want more details you can search for MISRA C (automotive market), the standards can be

Safety critical standards indeed forbid memory allocation usually. If you want more details you can search for MISRA C (automotive market), the standards can be found online. That being said, stack overflows and null derefs are not caused by dynamic memory allocation, so you still have to be careful about those and use some other rules / tools to protect you.