Hi, I have a Dell Optiplex 9010.
Dell lists new BIOS firmware available to address CVE-2017-5715 aka 'Spectre Variant 2'. http://www.dell.com/support/article/us/en/19/sln308587/microprocessor-side-channel-vulnerabilities-cve-2017-5715-cve-2017-5753-cve-2017-5754-impact-on-dell-products?lang=en Here is the BIOS update: http://www.dell.com/support/home/us/en/04/Drivers/DriversDetails?driverId=CR67Y Which states: - Update to the latest CPU microcode to address CVE-2017-5715. Intel released new microcode here: https://downloadcenter.intel.com/download/27431/Linux-Processor-Microcode-Data-File As documented on this site: https://www.bleepingcomputer.com/news/security/intel-releases-linux-cpu-microcodes-to-fix-meltdown-and-spectre-bugs/ According to the release notes for the Intel download only these processor families have new microcode IVT C0 (06-3e-04:ed) 428->42a SKL-U/Y D0 (06-4e-03:c0) ba->c2 BDW-U/Y E/F (06-3d-04:c0) 25->28 HSW-ULT Cx/Dx (06-45-01:72) 20->21 Crystalwell Cx (06-46-01:32) 17->18 BDW-H E/G (06-47-01:22) 17->1b HSX-EX E0 (06-3f-04:80) 0f->10 SKL-H/S R0 (06-5e-03:36) ba->c2 HSW Cx/Dx (06-3c-03:32) 22->23 HSX C0 (06-3f-02:6f) 3a->3b BDX-DE V0/V1 (06-56-02:10) 0f->14 BDX-DE V2 (06-56-03:10) 700000d->7000011 KBL-U/Y H0 (06-8e-09:c0) 62->80 KBL Y0 / CFL D0 (06-8e-0a:c0) 70->80 KBL-H/S B0 (06-9e-09:2a) 5e->80 CFL U0 (06-9e-0a:22) 70->80 CFL B0 (06-9e-0b:02) 72->80 SKX H0 (06-55-04:b7) 2000035->200003c GLK B0 (06-7a-01:01) 1e->22 So my processor is this: Intel(R) Core(TM) i5-3550 CPU @ 3.30GHz Which CPU World http://www.cpu-world.com/cgi-bin/CPUID.pl lists as: Family: 6 (06h) Model: 58 (03Ah) Stepping: 9 (09h) So would match the microcode for 06-3a-09 which is indeed in the Intel microcode available in microcode-20180108.tgz. But it's not in the list that the release notes has: cat releasenote | grep -i 06-3a-09 So it looks like Dell is releasing new BIOS updates that supply the latest microcode, and possibly labeling the download as fixing CVE-2017-5715 just because it's in the bundle, and not because it's been updated? Can anyone validate if this is actually correct? Or was this possibly a mixup just for this Dell desktop? When I test with spectre-meltdown-checker from: https://github.com/speed47/spectre-meltdown-checker It shows: * Hardware (CPU microcode) support for mitigation: NO The part of the script that does that check fails here: dd if=/dev/cpu/0/msr of=/dev/null bs=8 count=1 skip=9 dd: error reading '/dev/cpu/0/msr': Input/output error Which seems (to me) to indicate that the microcode to mitigate Spectre really isn't present. Thanks, Peter
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