While installing VirtualBox Guest Additions on my Oracle Linux 7.3, i got below error:

Check kernel version:

Install kernel-devel

yum install kernel-devel

I don’t see any kernel headers for 4.1.x under /usr/src/kernels/

Run below to install the required headers

yum install -y linux-headers-$(uname -r)

If you are comfortable to update all packages, you can also run below command:

yum update

This will take a lot of time depending on how many packages needs to be updated.

Try installing the VirtualBox Guest Additions again. It should succeed this time.