"Spoiler" bug of Intel CPUs

If/When we find it, it will be uploaded at the repository.

I am now running the new cpu306A9_plat12_ver00000021_2019-02-13_PRD_A8DF9213.bin (ivy i7-3770) and it’s like i got an extra core added to my cpu.

Especially I/O seems to have gotten a boost on my system.

Isn’t this just the 20190312 public release pack? Nope, it is a new batch!

For the record, keep an eye here:

Intel is adding another weird knob on these latest updates, Linux got a patch to deal with it. But the patch description was way too obfuscated, and I don’t have time to find out exactly how the PMU works to understand exactly what they did. This doesn’t mean it is security-related, though.

Can I get that into my BIOS with UBU?
Success with download of latest UBU + name change on MMTOOL, after messing around trying to replace MCE.db

@plutomaniac like @dash informed,

There is a new Linux Processor Microcode Update at https://downloadcenter.intel.com/downloa…ocode-Data-File dated 3/12/2019.

Intel-Linux_Processor_Microcode_readme.txt links for download to: https://github.com/intel/Intel-Linux-Pro…20190312.tar.gz

== 20190312 Release ==
– Updates upon 20180807 release –
Processor Identifier Version Products
Model Stepping F-MO-S/PI Old->New
---- new platforms ----------------------------------------
AML-Y22 H0 6-8e-9/10 0000009e Core Gen8 Mobile
WHL-U W0 6-8e-b/d0 000000a4 Core Gen8 Mobile
WHL-U V0 6-8e-d/94 000000b2 Core Gen8 Mobile
CFL-S P0 6-9e-c/22 000000a2 Core Gen9 Desktop
CFL-H R0 6-9e-d/22 000000b0 Core Gen9 Mobile
---- updated platforms ------------------------------------
HSX-E/EP Cx/M1 6-3f-2/6f 0000003d->00000041 Core Gen4 X series; Xeon E5 v3 ← #Like this one!
HSX-EX E0 6-3f-4/80 00000012->00000013 Xeon E7 v3
SKX-SP H0/M0/U0 6-55-4/b7 0200004d->0000005a Xeon Scalable
SKX-D M1 6-55-4/b7 0200004d->0000005a Xeon D-21xx
BDX-DE V1 6-56-2/10 00000017->00000019 Xeon D-1520/40
BDX-DE V2/3 6-56-3/10 07000013->07000016 Xeon D-1518/19/21/27/28/31/33/37/41/48, Pentium D1507/08/09/17/19
BDX-DE Y0 6-56-4/10 0f000012->0f000014 Xeon D-1557/59/67/71/77/81/87
BDX-NS A0 6-56-5/10 0e00000a->0e00000c Xeon D-1513N/23/33/43/53
APL D0 6-5c-9/03 00000032->00000036 Pentium N/J4xxx, Celeron N/J3xxx, Atom x5/7-E39xx
APL E0 6-5c-a/03 0000000c->00000010 Atom x5/7-E39xx
GLK B0 6-7a-1/01 00000028->0000002c Pentium Silver N/J5xxx, Celeron N/J4xxx
KBL-U/Y H0 6-8e-9/c0 0000008e->0000009a Core Gen7 Mobile
CFL-U43e D0 6-8e-a/c0 00000096->0000009e Core Gen8 Mobile
KBL-H/S/E3 B0 6-9e-9/2a 0000008e->0000009a Core Gen7; Xeon E3 v6
CFL-H/S/E3 U0 6-9e-a/22 00000096->000000aa Core Gen8 Desktop, Mobile, Xeon E
CFL-S B0 6-9e-b/02 0000008e->000000aa Core Gen8

#Note 1: It seems like, you have already updated the database, moreover some are newer than this list! (ex: 43 instead of 41 for Platform 6F Haswell-E) as you have mentioned, those have SPOILER fix!

Note 2: There is also an update present by Microsoft at, https://support.microsoft.com/en-us/help…crocode-updates named: KB4465065: Intel microcode updates. But, it is not mentioning about SPOILER related fix too. This current fix is downloadable from https://www.catalog.update.microsoft.com…aspx?q=4465065 for Windows 10 and Windows Server 2019 only, being as installer file(s)! Sadly, Windows 7 is not supported…

The KB4465065 update is NOT offered thru Windows Update. It can only be obtained by Microsoft Update Catalog.

i don’t know if following is caused by the new 21 mcode for ivy, but i had to lower my ddr voltage to 1.45 from 1.5 cause it was generating errors , errors that came even faster with higher voltage so i dropped it till no errors occured. Strange thing, maybe coincidence.


I have tried with MSI Z77A-GD65, i3-3220 processor. I have no issues, DDR3-2133 Ram speed with 1.5 Volts. (GSkill Trident brand single 8GB Ram) I am using this for Hackintosh mainly. Loaded Niresh Mojave Hackintosh 10.14.1, lately with 21 microcode, no issues again…

@karakarga , where did you get the information that the newest Intel microcodes address SPOILER?

I don’t doubt it has some sort of fix, I just want to know why people think this update fixes it.


Santa2017 wrote down:

“There is new Skylake X 0200005D Microcode Protected Against " SPOILER " DATE 2019-03-21 Release Inside Microsoft Windows 10 # 2020H1 #
Insider Preview 18860.1001 Kernel…”

Verified by plutomaniac and added to https://github.com/platomav/CPUMicrocodes database.

for this very same reason l will be leaving intel very soon for AMD. Seems very much marketing fron intel to me…