What is the main limitation of using chroot in Linux for environment isolation?

The main limitation of chroot in Linux is that it does not provide full process isolation and security. chroot changes the root directory for a process but does not isolate it from the rest of the system at the kernel level. This means that with root privileges inside the chroot environment, one can escape from it or access host resources.

Other limitations:

• chroot does not isolate network interfaces, processes, or users.
• It requires proper configuration and copying of necessary libraries and files into the new root environment.

Therefore, for more reliable isolation, containers (such as Docker) or virtual machines are used, which provide full isolation at the kernel and hardware level.