Take a look at our
ThinkPads.com HOME PAGE
For those who might want to contribute to the blog, start here: Editors Alley Topic
Then contact Bill with a Private Message

'Kernel memory leaking' Intel processor design flaw forces Linux, Windows redesign

Talk about "WhatEVER !"..
Message
Author
Puppy
Senior ThinkPadder
Senior ThinkPadder
Posts: 2532
Joined: Sat Oct 30, 2004 4:52 am
Location: Prague, Czech Republic

Re: 'Kernel memory leaking' Intel processor design flaw forces Linux, Windows redesign

#61 Post by Puppy » Thu Mar 01, 2018 2:16 pm

https://blogs.windows.com/windowsexperi ... s-devices/

We will offer additional microcode updates from Intel as they become available to Microsoft.

Good, Microsoft delivers CPU microcode updates via Windows Updates so it is not up to hw vendors to update BIOS.
ThinkPad (1992 - 2012): R51, X31, X220, Tablet 8

Thinkpad4by3
ThinkPadder
ThinkPadder
Posts: 1668
Joined: Sun Aug 09, 2015 9:25 am
Location: N. Bellmore, ny

Re: 'Kernel memory leaking' Intel processor design flaw forces Linux, Windows redesign

#62 Post by Thinkpad4by3 » Thu Mar 01, 2018 4:32 pm

At the Microsoft headquarters:

Bigwig 1: Hey, we could make consumers happy by offerig microcode updates.
Bigwig 2: Yea, we could. Couldn't we also collect data too. Hey Mr. Coder, can you modify the microcode.
Coder: Sure, gimme a second
Bigwig 1: Runs the calculations we could make 4.5% more profit per sucker.
Bigwig 2: Do it.

And now all Intel processors collect data while they are in any powered state(even S4). Big Brother is watching you.
"Its not what screen ratio you have, it is what you do with it." -me

Now stop complaining and get back to work with your "wrongly configured" box of pixels.

-Thinkpad4by3, or 3:2, or 16:10, or 16:9, or 21:9.....or whatever.

dr_st
Moderator
Moderator
Posts: 7383
Joined: Sat Oct 29, 2005 6:20 am

Re: 'Kernel memory leaking' Intel processor design flaw forces Linux, Windows redesign

#63 Post by dr_st » Fri Mar 02, 2018 1:21 am

S4 is a system state, not a CPU state. Go back to the university! :lol:
Current: Thinkpad 25 (20K7), Yoga 14 (20FY), X220 4291-4BG, T410 2537-R46, T60 2007-QPG, T42 2373-F7G
Collectibles: T430s (IPS FHD + Classic Keyboard), X32 (IPS Screen)
Retired: X61 7673-V2V, T60 1952-F76, A31p w/ Ultrabay Numpad

Thinkpad4by3
ThinkPadder
ThinkPadder
Posts: 1668
Joined: Sun Aug 09, 2015 9:25 am
Location: N. Bellmore, ny

Re: 'Kernel memory leaking' Intel processor design flaw forces Linux, Windows redesign

#64 Post by Thinkpad4by3 » Fri Mar 02, 2018 7:23 am

So shoot me for not being 100% in a Microsoft Joke :lol: . Make that C6?
"Its not what screen ratio you have, it is what you do with it." -me

Now stop complaining and get back to work with your "wrongly configured" box of pixels.

-Thinkpad4by3, or 3:2, or 16:10, or 16:9, or 21:9.....or whatever.

Puppy
Senior ThinkPadder
Senior ThinkPadder
Posts: 2532
Joined: Sat Oct 30, 2004 4:52 am
Location: Prague, Czech Republic

Re: 'Kernel memory leaking' Intel processor design flaw forces Linux, Windows redesign

#65 Post by Puppy » Wed Mar 28, 2018 6:42 pm

https://securityaffairs.co/wordpress/70 ... ttack.html

BranchScope is a new side-channel attack technique that like Meltdown and Spectre attacks can be exploited by an attacker to obtain sensitive information from vulnerable processors
ThinkPad (1992 - 2012): R51, X31, X220, Tablet 8

shawross
Junior Member
Junior Member
Posts: 472
Joined: Mon Oct 28, 2013 5:48 am
Location: Perth Aus / Thailand

Re: 'Kernel memory leaking' Intel processor design flaw forces Linux, Windows redesign

#66 Post by shawross » Wed Mar 28, 2018 7:09 pm

Make sure you have the Security Updates for March installed if you are running Windows 7.

It seems a security researcher discovered Microsoft botched the earlier 2018 patches.

https://www.digitaltrends.com/computing ... en-server/

Can we trust Microsoft? Obviously no and it makes you wonder.

Intel are still working on Spectre Bios updates and Lenovo have released the Bios update for the X220 version 1.44. Hopefully we will get a modded bios of this going forward.

https://www.bios-mods.com/forum/Thread- ... IOS?page=5

Previously it was thought that the Intel core 2 Duo processors weren't susceptible to Spectre but Intel have clarified that they definitely are. Intel are working on Microcode updates for dual core processors and also for Arandale CPUs as found in the X201.

https://newsroom.intel.com/wp-content/u ... idance.pdf

How effective these updates will be is an unknown also with regard to protection from new side channel exploit.
Active --- Love the X series
X301 SU9400 IDA Mod - W 7 / X201 540M - W 7 / X220 2520 - W7

Nostalgia
X61 T7500 / T41 T42 T43 / A31

Rogue daily driver - Samsung RV511 15.6 " Screen - W 7

shawross
Junior Member
Junior Member
Posts: 472
Joined: Mon Oct 28, 2013 5:48 am
Location: Perth Aus / Thailand

Re: 'Kernel memory leaking' Intel processor design flaw forces Linux, Windows redesign

#67 Post by shawross » Thu Mar 29, 2018 11:01 pm

Follow up update to fix latest vulnerabilities induced by Microsoft for Windows 7 64 bit.

https://support.microsoft.com/en-gb/hel ... -2018-1038
Active --- Love the X series
X301 SU9400 IDA Mod - W 7 / X201 540M - W 7 / X220 2520 - W7

Nostalgia
X61 T7500 / T41 T42 T43 / A31

Rogue daily driver - Samsung RV511 15.6 " Screen - W 7

dr_st
Moderator
Moderator
Posts: 7383
Joined: Sat Oct 29, 2005 6:20 am

Re: 'Kernel memory leaking' Intel processor design flaw forces Linux, Windows redesign

#68 Post by dr_st » Sun Apr 01, 2018 2:38 am

This has gotten so complicated. Patches, then patches that roll back patches, and patches that roll back patches that roll back patches.

I wish someone made a full list of related Windows updates for all currently supported versions (7, 8.1 and 10). This would help people who:
  • Want to manually pick their updates and want to patch against these serious vulnerabilities
  • Generally like to update Windows but want to avoid these patches due to the performance losses

I guess this is a good place to start:
https://support.microsoft.com/en-us/hel ... e-meltdown

I also guess that long-term it will be impossible to avoid the core patches that affect performance, while keeping the rest of Windows up-to-date. So users who would rather performance over security would have to use the registry-tweaking tools (as long as Microsoft keeps those available).
Current: Thinkpad 25 (20K7), Yoga 14 (20FY), X220 4291-4BG, T410 2537-R46, T60 2007-QPG, T42 2373-F7G
Collectibles: T430s (IPS FHD + Classic Keyboard), X32 (IPS Screen)
Retired: X61 7673-V2V, T60 1952-F76, A31p w/ Ultrabay Numpad

Puppy
Senior ThinkPadder
Senior ThinkPadder
Posts: 2532
Joined: Sat Oct 30, 2004 4:52 am
Location: Prague, Czech Republic

Re: 'Kernel memory leaking' Intel processor design flaw forces Linux, Windows redesign

#69 Post by Puppy » Wed Apr 04, 2018 4:55 am

Intel Stops Development, Deployment of Spectre Microcode Update for Several CPU Families
https://www.techpowerup.com/242974/inte ... u-families
ThinkPad (1992 - 2012): R51, X31, X220, Tablet 8

shawross
Junior Member
Junior Member
Posts: 472
Joined: Mon Oct 28, 2013 5:48 am
Location: Perth Aus / Thailand

Re: 'Kernel memory leaking' Intel processor design flaw forces Linux, Windows redesign

#70 Post by shawross » Wed Apr 04, 2018 7:39 am

I think the browser updates are probably the most important followed by OS updates and then BIOS or Microcode updates . Keep in mind that the success of these updates may not be 100% effective against the exploits without extensive CPU design.

It will be interesting to see if there are any attacks using these exploits so we can pause and see what gets reported.

I wouldn't be surprised if PC companies have asked Intel to stop work on older CPU Microcode updates because it affects their bottom line.
Active --- Love the X series
X301 SU9400 IDA Mod - W 7 / X201 540M - W 7 / X220 2520 - W7

Nostalgia
X61 T7500 / T41 T42 T43 / A31

Rogue daily driver - Samsung RV511 15.6 " Screen - W 7

dr_st
Moderator
Moderator
Posts: 7383
Joined: Sat Oct 29, 2005 6:20 am

Re: 'Kernel memory leaking' Intel processor design flaw forces Linux, Windows redesign

#71 Post by dr_st » Thu Apr 19, 2018 9:56 am

So, on X220 (Sandy Bridge), running Windows 7, the April Monthly Rollup (KB4091138) apparently includes a patch for Meltdown.

Before installing KB4091138 - InSpectre reports: no Meltdown protection, Good performance. After installing it - Meltdown protection active, Slower performance. After uninstalling KB4091138 -again: no Meltdown protection, Good performance.

Apparently (again, according to InSpectre), the Sandy Bridge generation has no "high-performance Meltdown fix" in the CPU, so some performance degradation is inevitable if one wants to patch for Meltdown.
Current: Thinkpad 25 (20K7), Yoga 14 (20FY), X220 4291-4BG, T410 2537-R46, T60 2007-QPG, T42 2373-F7G
Collectibles: T430s (IPS FHD + Classic Keyboard), X32 (IPS Screen)
Retired: X61 7673-V2V, T60 1952-F76, A31p w/ Ultrabay Numpad

Post Reply
  • Similar Topics
    Replies
    Views
    Last post

Return to “Off-Topic Stuff”

Who is online

Users browsing this forum: No registered users and 5 guests