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All Intel processors affected by memory leaking vulnerability

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Old 03-01-2018, 08:34 AM   #1
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All Intel processors affected by memory leaking vulnerability

And the fixes for it are expected to introduce a performance penalty of up to 50%.

As reported by Phoronix on the Linux side of things:

Over the past day you've likely heard lots of hysteria about a yet-to-be-fully-disclosed vulnerability that appears to affect at least several generations of Intel CPUs and affects not only Linux but also Windows and macOS. The Intel CPU issue comes down to leaking information about the kernel memory to user-space, but the full scope isn't public yet until the bug's embargo, but it's expected to be a doozy in the data center / cloud deployments...*snip*...The software fix for this Intel CPU problem for Linux/Windows/macOS is expected to introduce a performance penalty and reports are anywhere from 5% to 30%.
Of course, with Linux being open source, fixes have already been committed and mainlined into the upcoming kernel 4.15. The article claims a performance penalty of up to 30%, but Phoronix's benchmark on the kernel shows more than 50% I/O penalty on a CoffeeLake:





It will be interesting to see when Windows and macOS will receive their respective kernel patches and the extent of the performance penalty introduced there.

Article source: https://www.phoronix.com/vr.php?view=25767

Also interesting to note: the kernel developers are treating all x86 processors as being affected:

Last edited by Rock-kun; 03-01-2018 at 08:48 AM..
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Old 03-01-2018, 09:29 AM   #2
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TLDR: AMD not affected
Looks like benchmark tables require updating

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Old 03-01-2018, 10:22 AM   #3
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*looks at my media pc*

oh my...
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Old 03-01-2018, 10:26 AM   #4
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Continue using my laptop/PC without the patch even if available.

No concern for me at all.
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Old 03-01-2018, 10:37 AM   #5
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No problem la. Intel ma..Just bug buy buy
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Old 03-01-2018, 10:48 AM   #6
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And the point is?
*still using Intel laptop and desktop*

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Old 03-01-2018, 11:23 AM   #7
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Also interesting to note: the kernel developers are treating all x86 processors as being affected:
AMD is trying to prevent this:
https://lkml.org/lkml/2017/12/27/2
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Old 03-01-2018, 11:24 AM   #8
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And the point is?
*still using Intel laptop and desktop*

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Update, windows buggy. Update, system instability. Update, driver clash. Update, BSOD. Update, performance drop. Update, end up have to rollback

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Old 03-01-2018, 11:31 AM   #9
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aiyo
i hope gaming performance not too affected...
https://www.phoronix.com/scan.php?pa...l-Gaming-Tests
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Old 03-01-2018, 11:40 AM   #10
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AMD is trying to prevent this:
https://lkml.org/lkml/2017/12/27/2
The notes say AMD is not affected? No?
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Old 03-01-2018, 11:41 AM   #11
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And the point is?
*still using Intel laptop and desktop*

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Can use la.no need to throw away. Just vulnerable to attacks
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Old 03-01-2018, 12:44 PM   #12
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Can use la.no need to throw away. Just vulnerable to attacks
Not even using anti virus lol

Memory leaks issue not gonna affect normal usage anyway

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Old 03-01-2018, 02:03 PM   #13
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Intel processor design flaw forces Linux, Windows redesign.

A fundamental design flaw in Intel's processor chips has forced a significant redesign of the Linux and Windows kernels to defang the chip-level security bug.

Programmers are scrambling to overhaul the open-source Linux kernel's virtual memory system. Meanwhile, Microsoft is expected to publicly introduce the necessary changes to its Windows operating system in an upcoming Patch Tuesday: these changes were seeded to beta testers running fast-ring Windows Insider builds in November and December.

Crucially, these updates to both Linux and Windows will incur a performance hit on Intel products. The effects are still being benchmarked, however we're looking at a ballpark figure of five to 30 per cent slow down, depending on the task and the processor model.


https://www.theregister.co.uk/2018/0...u_design_flaw/
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Old 03-01-2018, 02:48 PM   #14
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So long is Intel then everyone is relief and life goes on..
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Old 03-01-2018, 02:51 PM   #15
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Not even using anti virus lol

Memory leaks issue not gonna affect normal usage anyway

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I read news saying this is more affecting clouds and server since the flaw can allow user A to read information/data belong to user B...
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