๐ [$] /dev/userfaultfd
๐ก Newskategorie: Linux Tipps
๐ Quelle: lwn.net
The userfaultfd() system call allows one thread to handle page faults for another in user space. It has a number of interesting use cases, including the live migration of virtual machines. There are also some less appealing use cases, though, most of which are appreciated by attackers trying to take control of a machine. Attempts have been made over the years to make userfaultfd() less useful as an exploit tool, but this patch set from Axel Rasmussen takes a different approach by circumventing the system call entirely. ...