[TH] Side Channel Attack Hits Arm CPUs (Update) - Overclock.net - An Overclocking Community
Forum Jump: 

[TH] Side Channel Attack Hits Arm CPUs (Update)

 
Thread Tools
post #1 of 3 (permalink) Old 06-11-2020, 06:45 PM - Thread Starter
sudo apt install sl
 
Join Date: Dec 2009
Posts: 6,732
Rep: 190 (Unique: 131)
[TH] Side Channel Attack Hits Arm CPUs (Update)

Source: https://www.tomshardware.com/news/si...k-hits-arm-cpu

Quote:
Arm, the well known global semiconductor company who design the chips that power our daily lives, has issued guidance to software developers after a vulnerability in their ARMv8-A (Cortex-A) CPU was discovered. The vulnerability was identified following research from the Google SafeSide project, which explores attacks such as this.

Straight-line Speculation (SLS) is a speculative execution which exploits CPUs that access data in advance to increase performance, and then discard any unused computational branches. Side channel attacks such as this could enable malicious attackers to steal data from the CPU. In a answer from the Arm Developer FAQ page “Note that at present we deem the security risk to be low as this would be difficult to exploit in practice, and a practical exploit has yet to be demonstrated. However, the possibility cannot be dismissed which is why Arm is acting now.”
Hopefully the fix doesn't hurt performance.

Silent
(20 items)
CPU
Core i9 9900K... CoffeeTime! @ 5.1Ghz w/ 1.36v
Motherboard
Maximus VIII Formula
GPU
Titan RTX @ 2100Mhz/2075Mhz
RAM
TeamGroup Xtreem 32GB 3200Mhz CL15
Hard Drive
HP EX950 2TB
Hard Drive
Samsung 850 Evo 1TB
Hard Drive
Samsung 850 Evo 1TB
Power Supply
EVGA SuperNova 1200w P2
Cooling
EK Supremacy Full Copper Clean
Cooling
XSPC D5 Photon v2
Cooling
Black Ice Gen 2 GTX360 x2
Cooling
EK-Vector RTX RE Ti - Copper + Plexi
Case
Thermaltake Core X5 Tempered Glass Edition
Operating System
Solus Linux
Monitor
Acer XF270HUA
Keyboard
Cherry MX Board 6.0
Mouse
Logitech G600
Mouse
Alugraphics GamerArt
Audio
Definitive Technology Incline
Audio
SMSL M8A
▲ hide details ▲
WannaBeOCer is offline  
Sponsored Links
Advertisement
 
post #2 of 3 (permalink) Old 06-11-2020, 06:54 PM
Vandelay Industries
 
maltamonk's Avatar
 
Join Date: May 2015
Location: US/UK
Posts: 1,676
Rep: 81 (Unique: 61)
https://www.extremetech.com/computin...ck-disclosures

Quote:
The ARM fixes are not expected to have a performance impact, while the performance impact of the Intel fixes has not been characterized or stated, as far as I can tell. Intel hasn’t completely fixed SGAxe or a related flaw, CacheOut, though its microcode updates are intended to limit the relevance and applicability of these attacks. Researchers and Intel appear to differ on exactly how mitigated the attacks are.
maltamonk is offline  
post #3 of 3 (permalink) Old 06-11-2020, 07:19 PM - Thread Starter
sudo apt install sl
 
Join Date: Dec 2009
Posts: 6,732
Rep: 190 (Unique: 131)
Quote: Originally Posted by maltamonk View Post
That's good news, Intel released microcodes in February for and the performance hit was pretty large which is probably why they didn't create a guidance yet.

Latest for Coffee Lake is version D2.

Edit: Just checked and some newer ones just came out, D6 is now the newest.

https://github.com/platomav/MCExtrac.../Changelog.txt

Silent
(20 items)
CPU
Core i9 9900K... CoffeeTime! @ 5.1Ghz w/ 1.36v
Motherboard
Maximus VIII Formula
GPU
Titan RTX @ 2100Mhz/2075Mhz
RAM
TeamGroup Xtreem 32GB 3200Mhz CL15
Hard Drive
HP EX950 2TB
Hard Drive
Samsung 850 Evo 1TB
Hard Drive
Samsung 850 Evo 1TB
Power Supply
EVGA SuperNova 1200w P2
Cooling
EK Supremacy Full Copper Clean
Cooling
XSPC D5 Photon v2
Cooling
Black Ice Gen 2 GTX360 x2
Cooling
EK-Vector RTX RE Ti - Copper + Plexi
Case
Thermaltake Core X5 Tempered Glass Edition
Operating System
Solus Linux
Monitor
Acer XF270HUA
Keyboard
Cherry MX Board 6.0
Mouse
Logitech G600
Mouse
Alugraphics GamerArt
Audio
Definitive Technology Incline
Audio
SMSL M8A
▲ hide details ▲
WannaBeOCer is offline  
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Overclock.net - An Overclocking Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off