c - Is a Command injection possible in the arg parameter of execve -

my program uses excve run ls, , second argument filled user :

  char * envp[1] = { 0 };    execve(my_command, user_input, envp);

is possible user inject command in user_input parameter though considered argument?

i tried running $( interpreted before :

./my_program.out "$(cat /etc/passwd)"

is there way escape $ still inject command?

no can't inject commands unless there vulnerability inside ls.

the argument vector , environment can accessed called program's main function, when defined as: int main(int argc, char *argv[], char *envp[])

Braziel