Directly viewing the process memory map using procfs

Looking up the internal process details of any arbitrary process does require root access, whereas looking up details of a process under your ownership (including the caller process itself) does not. So, as a simple example, we will look up the calling process's VAS by using the self keyword in place of the PID. The following screenshot shows this (on an x86_64 Ubuntu 18.04 LTS guest):

In the preceding screenshot, you can actually see the user VAS of the cat process – a veritable memory map of the user VAS of that process! Also, notice that the preceding procfs output is sorted in ascending order by (user) virtual address (UVA).