intel U 又爆多一個漏泂. intel建完全關閉HT..

MirageKnight

Yet Another Speculative Malfunction: Intel Reveals New Side-Channel Attack, Advises Disabling Hyper-Threading Below 8th, 9th Gen CPUs

https://www.techpowerup.com/2555 ... ow-8th-9th-gen-cpus

Ouch doesn't even begin to describe how much that headline hurt. As far as speculatrive execution goes, it's been well covered by now, but here's a refresher. Speculative execution essentially means that your CPU tries to think ahead of time on what data may or may not be needed, and processes it before it knows it's needed. The objective is to take advantage of concurrency in the CPU design, keeping processing units that owuld otherwise be left idle to process and deliver results on the off-chance that they are indeed required by the system: and when they are called for, the CPU saves time by not having to process them on the fly and already having them available.

The flaws have been announced by intel in coordination with Austrian university TU Graz, Vrije Universiteit Amsterdam, the University of Michigan, the University of Adelaide, KU Leuven in Belgium, Worcester Polytechnic Institute, Saarland University in Germany and security firms Cyberus, BitDefender, Qihoo360 and Oracle. While some of the aprts involved have named the four identified flaws with names such as "ZombieLoad", "Fallout", and RIDL, or "Rogue In-Flight Data Load", Intel is taking the PEGI-13 Microarchitectural Data Sampling (MDS) name.

.....

8 9 代好似無事. 舊少少個D中晒..

lpc041088

i9 9900K No, i7 9700K Yes!

~Mars~

Yet Another Speculative Malfunction: Intel Reveals New Side-Channel Attack, Advises Disabling Hyper- ...
MirageKnight 發表於 2019-5-15 10:53

Affected Processors
Virtually all of Intel’s chips starting with the Nehalem architecture (launched in 2008, 11 years ago) and newer, with the exception of the Whiskey Lake (ULT refresh), Whiskey Lake (desktop), as well as the Atom and Knights architectures, are affected by the MDS vulnerabilities

So no, 9900k and 8700k are definitely affected

https://www.tomshardware.com/new ... ding-spectre-attack,39333.html

bam1a

大佬我係咪要dum曬啲會變過時硬件嘅2C4T嘅手提電腦架

kcthomlau

intel發達
fans全部要upgrade再關HT

MirageKnight

Affected Processors
Virtually all of Intel’s chips starting with the Nehalem architecture (launche ...
~Mars~ 發表於 2019-5-15 11:15

intel 話8,9代已經有HW fix. 唔應該會影響到喎...

a00186

intel 話8,9代已經有HW fix. 唔應該會應該到喎...
MirageKnight 發表於 2019-5-15 11:33

9代應該一樣瀨野

https://mdsattacks.com FAQ：

Am I affected?
Very likely. Our attacks affect all modern Intel CPUs in servers, desktops and laptops. This includes the latest 9th-generation processors, despite their in-silicon mitigations for Meltdown. Ironically, 9th-generation CPUs are more vulnerable to some of our attacks compared to older generation hardware.

Processors from other vendors (AMD and ARM) do not appear to be affected. Official statements from these vendors can be found in the RIDL and Fallout papers.

sunyan12

FBI / CIA 係INTEL 真多馬仔 !

freefdhk

開始覺得...
從Core I 開始 , 每代效能增長難特破, 所以每代都預先植入 一些特別的漏洞 ,
在想他們退役時就公佈該系列的漏洞 .

然後 Bugs fixed 就要減 30~80% 效能，咁你地一定要FIXED 吾係就會好危險 ,
然後BUGS FIXED 完變慢好多 ，就成功要你換 CPU 、MB、RAM 一條龍.