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'Kernel memory leaking' Intel processor design flaw forces Linux, Windows redesign
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- Senior ThinkPadder
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Re: 'Kernel memory leaking' Intel processor design flaw forces Linux, Windows redesign
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.
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
Huawei MateBook 13
Huawei MateBook 13
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- Senior ThinkPadder
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- Location: N. Bellmore, ny
Re: 'Kernel memory leaking' Intel processor design flaw forces Linux, Windows redesign
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.
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.
Thinkpad4by3's Law of the Universe.
The efficiency of two screens equally sized with equal numbers if pixels are equal. The time spent by a 4:3 user complaining about 16:9 is proportional to the inefficiency working with a 16:9 display, therefore the amount of useful work extracted is equal.
The efficiency of two screens equally sized with equal numbers if pixels are equal. The time spent by a 4:3 user complaining about 16:9 is proportional to the inefficiency working with a 16:9 display, therefore the amount of useful work extracted is equal.
Re: 'Kernel memory leaking' Intel processor design flaw forces Linux, Windows redesign
S4 is a system state, not a CPU state. Go back to the university!
Thinkpad 25 (20K7), T490 (20N3), Yoga 14 (20FY), T430s (IPS FHD + Classic Keyboard), X220 4291-4BG
X61 7673-V2V, T60 2007-QPG, T42 2373-F7G, X32 (IPS Screen), A31p w/ Ultrabay Numpad
X61 7673-V2V, T60 2007-QPG, T42 2373-F7G, X32 (IPS Screen), A31p w/ Ultrabay Numpad
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- Senior ThinkPadder
- Posts: 2670
- Joined: Sun Aug 09, 2015 9:25 am
- Location: N. Bellmore, ny
Re: 'Kernel memory leaking' Intel processor design flaw forces Linux, Windows redesign
So shoot me for not being 100% in a Microsoft Joke . Make that C6?
Thinkpad4by3's Law of the Universe.
The efficiency of two screens equally sized with equal numbers if pixels are equal. The time spent by a 4:3 user complaining about 16:9 is proportional to the inefficiency working with a 16:9 display, therefore the amount of useful work extracted is equal.
The efficiency of two screens equally sized with equal numbers if pixels are equal. The time spent by a 4:3 user complaining about 16:9 is proportional to the inefficiency working with a 16:9 display, therefore the amount of useful work extracted is equal.
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- Senior ThinkPadder
- Posts: 2821
- Joined: Sat Oct 30, 2004 4:52 am
- Location: Prague, Czech Republic
Re: 'Kernel memory leaking' Intel processor design flaw forces Linux, Windows redesign
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
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
Huawei MateBook 13
Huawei MateBook 13
Re: 'Kernel memory leaking' Intel processor design flaw forces Linux, Windows redesign
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.
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 W 7/Mint | X201 540M L Mint | X220 2520 W7/Mint
Nostalgia
X61 T7500 / T41 T42 T43 / A31
Rogue daily driver - Samsung RV511 15.6 " Screen - W 7
X301 W 7/Mint | X201 540M L Mint | X220 2520 W7/Mint
Nostalgia
X61 T7500 / T41 T42 T43 / A31
Rogue daily driver - Samsung RV511 15.6 " Screen - W 7
Re: 'Kernel memory leaking' Intel processor design flaw forces Linux, Windows redesign
Follow up update to fix latest vulnerabilities induced by Microsoft for Windows 7 64 bit.
https://support.microsoft.com/en-gb/hel ... -2018-1038
https://support.microsoft.com/en-gb/hel ... -2018-1038
Active --- Love the X series
X301 W 7/Mint | X201 540M L Mint | X220 2520 W7/Mint
Nostalgia
X61 T7500 / T41 T42 T43 / A31
Rogue daily driver - Samsung RV511 15.6 " Screen - W 7
X301 W 7/Mint | X201 540M L Mint | X220 2520 W7/Mint
Nostalgia
X61 T7500 / T41 T42 T43 / A31
Rogue daily driver - Samsung RV511 15.6 " Screen - W 7
Re: 'Kernel memory leaking' Intel processor design flaw forces Linux, Windows redesign
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:
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).
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).
Thinkpad 25 (20K7), T490 (20N3), Yoga 14 (20FY), T430s (IPS FHD + Classic Keyboard), X220 4291-4BG
X61 7673-V2V, T60 2007-QPG, T42 2373-F7G, X32 (IPS Screen), A31p w/ Ultrabay Numpad
X61 7673-V2V, T60 2007-QPG, T42 2373-F7G, X32 (IPS Screen), A31p w/ Ultrabay Numpad
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- Senior ThinkPadder
- Posts: 2821
- Joined: Sat Oct 30, 2004 4:52 am
- Location: Prague, Czech Republic
Re: 'Kernel memory leaking' Intel processor design flaw forces Linux, Windows redesign
Intel Stops Development, Deployment of Spectre Microcode Update for Several CPU Families
https://www.techpowerup.com/242974/inte ... u-families
https://www.techpowerup.com/242974/inte ... u-families
ThinkPad (1992 - 2012): R51, X31, X220
Huawei MateBook 13
Huawei MateBook 13
Re: 'Kernel memory leaking' Intel processor design flaw forces Linux, Windows redesign
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.
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 W 7/Mint | X201 540M L Mint | X220 2520 W7/Mint
Nostalgia
X61 T7500 / T41 T42 T43 / A31
Rogue daily driver - Samsung RV511 15.6 " Screen - W 7
X301 W 7/Mint | X201 540M L Mint | X220 2520 W7/Mint
Nostalgia
X61 T7500 / T41 T42 T43 / A31
Rogue daily driver - Samsung RV511 15.6 " Screen - W 7
Re: 'Kernel memory leaking' Intel processor design flaw forces Linux, Windows redesign
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.
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.
Thinkpad 25 (20K7), T490 (20N3), Yoga 14 (20FY), T430s (IPS FHD + Classic Keyboard), X220 4291-4BG
X61 7673-V2V, T60 2007-QPG, T42 2373-F7G, X32 (IPS Screen), A31p w/ Ultrabay Numpad
X61 7673-V2V, T60 2007-QPG, T42 2373-F7G, X32 (IPS Screen), A31p w/ Ultrabay Numpad
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