In particular, memory areas used as input and/or output are isolated from the rest of the kernel and surrounded by guard pages. Without arch hooks, this common base provides weak isolation. On ...

Linux processes are made up of text, data, and BSS static segments; in addition, each process has its own stack (which is created with the fork system call). Heap space for Linux tasks are allocated ...

Kernel Mode Linux (KML) is a technology that enables the execution of user processes in kernel mode. I described the basic concept and the implementation techniques of KML on IA-32 architecture in my ...

Both Windows and Linux are receiving significant security updates that can, in the worst case, cause performance to drop by half, to defend against a problem that as yet hasn’t been fully disclosed.

Researchers from the Graz University of Technology have discovered a way to convert a limited heap vulnerability in the Linux kernel into a malicious memory writes capability to demonstrate novel ...

Researchers create PoC of a post-exploitation kernel-mode fileless attack technique. There are lots of Holy Grails when it comes to compromising endpoints. One of them has long been an attack that ...

Looks simple enough; you would think there is not much overhead with only those two system calls. In reality, this couldn't be further from the truth. Behind those two calls, the data has been copied ...