To even begin to understand how this attack works, you will need at least a basic understanding of how a CPU works, how memory works, what the “heap” and “stack” of a process are, what pointers are, what libc is, what linked lists are, how function calls are implemented at the machine level (including calls … Read more
The answer is: YOU CAN’T. Alain Knaff, who is the writer of linux kernel says; And i Quote This is Linux, not Windows, and Linux doesn’t have any bugs which would allow you to do this. There is a reason, after all, why more and more >people are ditching Windows, and using Linux. Ofcourse, you … Read more
I thought about the question some more. There are filesystem-specific ways to create the possibility of truly hidden files, of course, but I’m not at all interested in exploring those. However, there is a different approach, a variant, that might suit your needs. You could achieve a similar effect by intercepting only the open syscall … Read more
What’s the point of all of this for example if I am looking at NIC card, then whatever I suppose to get with the mmap call in Userspace application and Kernel implementation of MMAP in proxy driver will have kernel data structure. What do kernel data structures have to do with it? If you are … Read more
One option would be to “blacklist” the ftdi_sio module to stop it being loaded automatically. To do that create the following file: /etc/modprobe.d/ftdi_sio-blacklist.conf # This is a comment. Change it if you want. blacklist ftdi_sio 0 solved How to automatically run ‘sudo modprobe -r ftdi_sio’ whenever the device is plugged into my computer
How many times can you use copy_to_user() in a kernel program? As many times as you want. But they have to make sense (because anything you do in any kind of program has to make sense). I thought if the data that is passed into the copy_to_user() will append the data to the next line. … Read more
Userspace programs do exist in the Linux kernel source tree in the tools/ subdirectory. There does not seem to be a clear-cut (or any) definition of what kind of program constitutes a “tool” that requires/deserves inclusion/distribution with the kernel source. The types of utilities that do (currently) exist in the kernel source tree include an … Read more