In anticipation of the announcement of the new series of graphics gas pedals GeForce RTX 4000 company decided to entertain its audience with riddles and puzzles to fuel interest in the upcoming event.Image source: VideoCardz / NVIDIAThe week before the company on its Twitter page published a graphics riddle, consisting of images of triangles. Inquisitive users solved it quite quickly.It turned out that the number of triangles in the vertical columns corresponds to a certain letter in the English alphabet and indicates its serial number.As a result, the clue was the message GeForce Beyond, referring to the event of the same name, which NVIDIA will hold on September 20. Image source: Twitter / @RedSunFXThe new mystery appeared today, it is a short video showing a computer table, monitors and a table lying on the table. The table is a diagram of an algorithm for calculating Bernoulli numbers.It was created by the English mathematician Ada Lovelace in 1843 for an analytic machine designed by the British mathematician Charles Babbage.Lovelace wrote the world's first program for this machine and coined the terms \"cycle\" and \"working cell.She is also considered the first programmer in history.Mentioning the above table, NVIDIA has indirectly confirmed rumors that the new graphics architecture of GeForce RTX 40-series gaming video cards is called Ada Lovelace.Some users have also noticed a note glued to one of the monitors in the video.The sticker contains some numbers, which in one of the assumptions may indicate the characteristics of a senior graphics processor AD102, the underlying flagship video card GeForce RTX 4090.Number 629, for example, could indicate the area of the GPU chip, which is 629 mm2, 7538 in turn may indicate the number of transistors in the GPU - 75.38 billion.But about the first number no conclusive assumptions.However, some think it hints at a performance gain AD102 chip compared to GA102 (it is used in the GeForce RTX 3090) by 2.08 times.According to recent rumors, next week NVIDIA will present only three graphics cards of the new generation: GeForce RTX 4090, GeForce RTX 4080 with 16 GB of memory and GeForce RTX 4080 with 12 GB of memory.At the same time in October we should expect to see only the flagship gas pedal on sale.
A bug in Intel's fresh processor architecture allows direct data leaks via SGX
The discovery of Spectre and Meltdown vulnerabilities in Intel and other processor architectures was followed by a shaft of new leaks, implemented in side-channel attacks.An investigation into vulnerabilities in Intel processor architecture in generations 10 to 12 revealed a significantly larger threat - the possibility of a direct leak of sensitive user data due to a direct vulnerability in the company's new processor architectures.Image source: IntelInternational research team has released information on the discovery of a vulnerability named AEPIC Leak (ÆPIC Leak) and code CVE-2022-21233 in new Intel processors.The two terms APIC and EPIC are intertwined in the name, which hints at serious problems when accessing the APIC interrupt controller.In xAPIC mode, the corresponding registers are accessed through a memory-mapped I/O page (MMIO).If an attacker has administrator or root access, the application memory can be unloaded almost instantly via MMIO.No complicated manipulation, as with leaks in side-channel attacks, is necessary, so the researchers described ÆPIC Leak as \"the first CPU bug capable of exposing sensitive data.\"Of course, the requirement to have administrator or root access for a ÆPIC Leak attack will limit the field of action for attackers.Therefore, most non-cracked systems will be out of this danger.But there is one \"but\".If the system relies on Intel SGX protection, ÆPIC Leak will overcome it easily.More specifically, the new vulnerability uses SGX precisely to bypass protection from attacks by privileged attackers.As soon as an SGX enclave application is loaded into memory, ÆPIC Leak is able to immediately completely offload application memory to steal data from it.So don't get your hopes up about SGX in this matter.The researchers' data on this leak was given to Intel late last year.Intel rated the reported vulnerability as a medium-risk vulnerability, which is presented as an \"uninitialized memory read vulnerability.\" Intel's recommendations suggest that processors without SGX support are fully protected against the ÆPIC Leak.For processors with SGX, it is recommended to enable x2APIC mode in OS and virtual machine monitors, then xAPIC MMIO page will be disabled and will not allow leaks through its resources.Speaking about the list of vulnerable processors, Intel provided a list of Intel Ice Lake 10th generation, Intel Xeon 3rd generation (Ice Lake SP), Ice Lake Xeon-SP, Ice Lake D, Gemini Lake, Ice Lake U, Y and Rocket Lake models.
AMD to unveil Radeon RX 7000 graphics cards tonight
AMD will unveil Radeon RX 7000 graphics cards on the latest RDNA 3 architecture graphics processors tonight. The start of the presentation,...