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Questions tagged [meltdown]

Use for questions related to CPU hardware issue (common on Intel CPUs) which was discovered in mid 2017 and became public in January 2018 - CVE-20175754

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MacBook Pro 2018 Spectre/Meltdown

I have a question about the Spectre/Meltdown security on Mac. To mitigate the problem I guess also the microcode update of the processor is needed. How does Apple handle this? Do I need to update ...
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What versions of Windows use the PCID feature to speed up Meltdown patch?

I have Windows 7 Enterprise SP1 64 bit with an Intel i7-6820HQ (with latest microcode rev 0xC6) and InSpectre #8 says I have both protections, but SLOWER. Is it because Windows 7 does not use the ...
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Undo Meltdown-Patch done over 3rd party-software

I‘ve applied the Intel Meltdown/Spectre-Patch for my i5 6500 over an App called „Driver Booster“. This App showed a little screen while patching, and since then I had more than just a small ...
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187 views

Analyze Spectre and Meltdown Check Script by Red Hat

As you know Red Hat published a script to check the vulnerability of the system to Spectre and Meltdown. Kernel upgrade and activation/deactivation of some features is enough for avoid from these ...
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Were any open source/hardware CPUs affected by Spectre?

I am curious if any open hardware CPUs were affected by Spectre or Meltdown. However, I cant seem to find any confirmation that any were or were not affected.
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What to do with a i5-5200U CPU running Win 8.1 in regards to Spectre and Meltdown?

I have a Lenovo g50-80 with an Intel i5-5200U CPU running Windows 8.1 64bits with all updates installed and no new updates available (only 2 optional ones that are irrelevant here). I just ran ...
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301 views

Meltdown and Spectre: practical advantages and disadvantages for users? (security and performances) [closed]

I was guessing which could be the practical downsides of the patches for these risks and also if a user decides to not apply these patches. Preamble: In the middle of January I bought a refurbished ...
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183 views

Post-Meltdown Patch Disk Performance

I am doing a school project regarding the Meltdown patches and how it affects performance, and was doing some disk benchmarks (CrystalDiskMark). Current setup is i5-8600K + Samsung 860Evo 250GB, and ...
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208 views

Internet Explorer Inoperable after Meltdown/Spectre Patches in Windows 10

This started happening shortly after Meltdown/Spectre was in the news. I've tried: Uninstalling and reinstalling IE. Resetting IE settings Uninstalling KB4056892. Searching yields results for AMD ...
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147 views

Is KB4056759 part of Meltdown and spectre update fix?

I can't tell if it is part of Meltdown and Spectre. MS site says its a fix for "An elevation of privilege vulnerability exists in the Microsoft Server Message Block (SMB)". But a couple of sites link ...
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Linux Server reboots unreasonably

After applying Meltdown and Specter fix for Linux my openSUSE Leap 42.3 server began to reboot unreasonably. It can work 1 day and then reboot or it can work for 15 mins after the last restart and ...
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how to update godaddy Dedicated linux server centos 6.9 kernel

I have dedicated server from godaddy. The Linux information is as follows. Version: CentOS release 6.9 (Final) Kernel: 2.6.32-042stab111.11 I have executed "yum update" on server and now /boot shows ...
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Spectre/Meltdown- Lenovo M800 BIOS update does not appear to work

So I've got a Lenovo ThinkCentre M800, running Windows 10 x64, 1709. I've applied their latest BIOS Update which is version FWKT86A, and then ran Get-SpeculationControlSettings (From the Speculation ...
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470 views

If Spectre and Meltdown OS patches are not applied on a Windows system, can other new Microsoft patches be applied?

In this Information Security QA, we thoughtfully discuss whether or not patching for Spectre and Meltdown are necessary on Windows boxes. Some will undoubtedly decide they want to patch certain ...
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201 views

Which memory can be accessed using Meltdown and Spectre v1/v2?

I understand that Meltdown can access kernel memory as the programs on Windows at least share the same virtual memory space. We have a patch for this to unmap as much kernel data as possible. Can ...
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237 views

How does reading kernel memory translate into stealing passwords with meltdown vulnerability?

I have basic understanding of OS and I understand the mechanism of the meltdown vulnerability but I need some help to filling in the blank between reading kernel memory and stealing user passwords. ...
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2answers
813 views

Do Spectre&Meltdown microcode updates slow down the computer?

I have a question about Meltdown and Spectre. As far as I understood, the Windows patches are just workarounds and what really needs to be done are microcode updates Microsoft says that the ...
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325 views

Are VIA x86 CPU's affected by Meltdown and Spectre?

Every article and website I've seen, including the official Meltdown research page only talk about Intel, AMD, ARM, and even a couple articles about PowerPC chips being affected by the Meltdown and ...
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259 views

My BIOS is outdated. Will I be affected by Meltdown and Spectre?

I had made the mistake of buying a Lenovo Laptop. The model is Lenovo Flex 2-14. This laptop has a bios from 2014 and Lenovo never issued an update. I've been reading on some major sites that BIOS ...
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137 views

Meltdown/Spectre fix on older windows PC

I have a Dell Dimension 4700, running Windows 7 Home Premium (32 bit). Per 'systeminfo', the CPU is "x86 Family 15 Model 4" I believe that this is vulnerable to the Meltdown/Spectre problem. WRT ...
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90 views

Impact of Meltdown [closed]

I am trying to find out something about this Meltdown vulnerability affecting, in few words, all Intel processors. According to what I have read, Microsoft has launched a fix via Windows Update, but I ...
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471 views

Computer won't boot - related to KB4056892 (Meltdown) update?

My computer has been doing strange and random things for the last year and I think it may have with a hardware problem I cannot find. However, on this occasion suddenly my computer wouldn't boot: ...
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What should I do about Meltdown and Spectre vulnerabilities with my Linux system?

I have GNU/Linux running on an (obviously recent enough) Intel CPU. I've heard about the grave security flaws which have surfaced, Spectre and Meltdown, although I haven't read the details yet. I've ...