Intel Cpu Code Utilizes Hardware
For more information about Intel Processors with built-in graphics capability, see the frequently asked questions on Intel HD Graphics. The Intel Driver & Support Assistant helps you identify and install the graphics driver applicable to your system. Changes:- Updated for Windows 7 Maintenance Release 3The contents of this release include:- Intel.Video drivers Intel introduced processor graphics in 2009. 3 Kernel Memory Leaking vulnerability or Intel CPU bug Intel Atom/Celeron/Pentium CPU Embedded Driver 3.0 for Windows 7. To enable the Perf driverless collection to match all the hardware profiling functionality provided with Intel drivers, you will need administrative privileges to configure system options as. Intel processors provide performance monitoring unit (PMU) events that can be used to analyze how effectively your code utilizes hardware resources.
Also, the slowdown will depend massively on the workload and the I/O intensive usage between the kernel and user space programs. The fix at OS level comes with the implementation of the Kernel Page Table Isolation (KPTI) to ensure the kernel memory invisible to the user processes.But, as this is not a perfect world, the enhanced security applied by this patch introduces a big performance penalty for user programs of around a 30%. Kernel Memory Leaking vulnerability or Intel CPU bugIntel CPUs have been impacted by a critical chip-level security bug that cannot be fixed by a microcode update, but at OS level and affects to all of them (Windows, Linux and macOS.The Kernel Memory Leaking vulnerability face the issue where every user space program (databases, javascript, web browsers, etc.) could access illegally to certain contents in protected kernel memory, by overpassing the virtual memory boundaries specified in the operating system.
Currently, there is a few variants of these attacks:Variant 1 (CVE-2017-5753, Spectre): Bounds check bypassVariant 2 (CVE-2017-5715, also Spectre): Branch target injectionVariant 3 (CVE-2017-5754, Meltdown): Rogue data cache load, memory access permission check performed after kernel memory readFurther technical explanation of these attacks in. Meltdown and Spectre attacksMeltdown and Spectre attacks are referred to side-channel vulnerabilities found in several CPU hardware implementations, that take advantage of the ability to extract information from CPU instructions executed using the CPU cache as a side-channel. For that reason, resource shared environments like virtualization, micro-services or cloud systems are more likely to be affected and abused.Until a definitive patch at OS level is provided, the points of prevention that we’ve set in the past section, will be enough for now.AMD has confirmed that their processors are not being affected by the vulnerability and hence, by the penalty performance.
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