A security flaw in Intel processors has led to a redesign of Linux and Windows kernels. The Register reports that software updates are required for both Windows and Linux systems, and performance of a machine will be affected.
Intel and other technology companies have been made aware of new security research describing software analysis methods that, when used for malicious purposes, have the potential to improperly gather sensitive data from computing devices that are operating as designed, said Intel.
Intel’s processors that lets attackers bypass kernel access protections so that regular apps can read the contents of kernel memory. To protect against this, Linux programmers have been separating the kernel’s memory away from user processes in what’s being called “Kernel Page Table Isolation.”
ARM confirmed that Cortex-A processors are affected by this situation, but that others aren’t so much. “This method requires malware running locally and could result in data being accessed from privileged memory,” ARM said in a statement VIA Axios. Google seems to have been part of the research that discovered this flaw. They suggested today that they discovered the potential for the situation all the way back a year ago.
AMD has confirmed that its own processors are not affected by this security bug. AMD processors are not subject to the types of attacks that the kernel page table isolation feature protects against.