The vulnerability mentioned below can be triggered by entering the "history" command in the shell after introducing the two large buffers as well. The steps to reproduce are as follows:
1. Launch Zephyr OS in QEMU.
2. Enter 150 "A"s into the terminal. Press Enter.
3. Enter 234 "A"s into the terminal. Press Enter.
4. Issue the "history" command in the shell environment.
5. OS crashes.
This enables the vulnerability to be exploited remotely on Zephyr OS hosts with telnet enabled.