Preface: Looking back, a vulnerability was discovered in NVIDIA GPU Display Driver on 2016. A flaw exists in the kernel mode layer (nvlddmkm.sys) handler for DxgDdiEscape IDs 0x600000E, 0x600000F, and 0x6000010 due to improper validation of user-supplied input that is used as an index to an internal array. A local attacker can exploit this to…

Preface: There’s no needle with both ends pointed. The baseline requirements of ETSI EN 303 645 specifically have timely, automatic updates as one of its requirements. So the first step in best practice is to ensure that software updates can be delivered to your system, preferably automatically and over-the-air (OTA). Background: Traditionally, U-Boot is the…

Preface: Traditionally, the only way to enable that syscall in Linux was to enable CONFIG_CHECKPOINT_RESTORE. However, since Linux v5.10.20 and v5.11.3, a new CONFIG_KCMP has been added to Linux to allow enabling sys_kcmp without having to enable CONFIG_CHECKPOINT_RESTORE! Background: Secure computing mode ( seccomp ) is a Linux kernel feature. You can use it to…

Preface: Hardware debug modes and processor INIT setting that allow override of locks for some Intel(R) Processors in Intel(R) Boot Guard and Intel(R) TXT may allow an unauthenticated user to potentially enable escalation of privilege via physical access. Background: Protection Class “Public” (historically also known as “Green” or “Locked”) is where all sets of debuggers…

Preface: KVM (Kernel based Virtual Machine) is an open source Linux kernel virtualization infrastructure2 which relies on the hardware virtualization technologies, fully integrated in the Linux kernel. Its first version was introduced in the 2.6.20 Linux kernel tree (released in February 2007). KVM developers are primarily funded by a technology startup called Qumranet, now owned…

Preface: Google Pixel is a brand of consumer electronic devices developed by Google that run either Chrome OS or the Android operating system. The Pixel brand was introduced in February 2013 with the first-generation Chromebook Pixel. The Pixel line includes laptops, tablets, and smartphones, as well as several accessories. Background: The Google Pixel is one…

Preface: If you look into a Mainframe computer system, you will find Brocade SANS storage made use of Ficon connection. As times goes by, Hi-end supercomputer system still using this solution.Furthermore, Brocade products not limit the usage in supercomputer. The Fibre Channel storage networking and management solution are expanded to cloud computing. Becuase the Fibre…

Preface: A distributed hypermedia architect has only three fundamental options: 1) render the data where it is located and send a fixed-format image to the recipient; 2) encapsulate the data with a rendering engine and send both to the recipient; or, 3) send the raw data to the recipient along with metadata that describes the…

Preface: If you do a resources plan in large data center. Maybe you use nmap. E.g: Performs a list scan on the provided ranges and returns an NmapReport object including in your MIS report. Background: libnmap is a python library to parse nmap xml data. It supports python 3.6+. libnmap is a python library enabling…

Preface: Fuchsia is an IoT; first OS means OS for your fridge, RaspberryPi, car, TV, etc. Background: Zircon is the core platform that powers the Fuchsia OS. Zircon is composed of a microkernel (source in kernel/…) as well as a small set of userspace services, drivers, and libraries (source in system/…) necessary for the system…