Intel, AMD, ARM CPU vulnerability tldr

This is a widespread security flaw in hardware and everyone is affected.

AMD and ARM are affected as well

List of affected Intel CPUs

  • Intel® Core™ i3 processor (45nm and 32nm)
  • Intel® Core™ i5 processor (45nm and 32nm)
  • Intel® Core™ i7 processor (45nm and 32nm)
  • Intel® Core™ M processor family (45nm and 32nm)
  • 2nd generation Intel® Core™ processors
  • 3rd generation Intel® Core™ processors
  • 4th generation Intel® Core™ processors
  • 5th generation Intel® Core™ processors
  • 6th generation Intel® Core™ processors
  • 7th generation Intel® Core™ processors
  • 8th generation Intel® Core™ processors
  • Intel® Core™ X-series Processor Family for Intel® X99 platforms
  • Intel® Core™ X-series Processor Family for Intel® X299 platforms
  • Intel® Xeon® processor 3400 series
  • Intel® Xeon® processor 3600 series
  • Intel® Xeon® processor 5500 series
  • Intel® Xeon® processor 5600 series
  • Intel® Xeon® processor 6500 series
  • Intel® Xeon® processor 7500 series
  • Intel® Xeon® Processor E3 Family
  • Intel® Xeon® Processor E3 v2 Family
  • Intel® Xeon® Processor E3 v3 Family
  • Intel® Xeon® Processor E3 v4 Family
  • Intel® Xeon® Processor E3 v5 Family
  • Intel® Xeon® Processor E3 v6 Family
  • Intel® Xeon® Processor E5 Family
  • Intel® Xeon® Processor E5 v2 Family
  • Intel® Xeon® Processor E5 v3 Family
  • Intel® Xeon® Processor E5 v4 Family
  • Intel® Xeon® Processor E7 Family
  • Intel® Xeon® Processor E7 v2 Family
  • Intel® Xeon® Processor E7 v3 Family
  • Intel® Xeon® Processor E7 v4 Family
  • Intel® Xeon® Processor Scalable Family
  • Intel® Xeon Phi™ Processor 3200, 5200, 7200 Series
  • Intel® Atom™ Processor C Series
  • Intel® Atom™ Processor E Series
  • Intel® Atom™ Processor A Series
  • Intel® Atom™ Processor x3 Series
  • Intel® Atom™ Processor Z Series
  • Intel® Celeron® Processor J Series
  • Intel® Celeron® Processor N Series
  • Intel® Pentium® Processor J Series
  • Intel® Pentium® Processor N Series

A more broad list published by reddit user says, every desktop since 1995 is affected

replace the x below with the number you see by running "msinfo32" after the CPU model number

Silvermont (shipped after August 2013)

Atom E38xx/Z3680/Z37xx (Atom E-Series found in MY2014-2017 cars)

Atom Z34x0/Z35x0 (Smartphones only)

Atom C23xx/C25xx/C27xx (Servers and Routers)

Celeron J1750/J18x0/J1900/N28x0/N29x0

Pentium J2850/J2900/N35x0

Airmont (shipped after August 2015)

Atom Z83x0/Z85x0/Z87x0

Celeron N30x0/J30x0/N31x0/J31x0

Pentium N37x0/J37x0

Goldmont (shipped after August 2016)

Atom x5 E3930/x5 E3940/x7 E3950 (Atom E-Series found in MY2017/2018 cars)

Atom C33xx/C35xx/C37xx/C38xx/C39xx (Servers and Routers)

Celeron N3350/J3355/N3450/J3455

Pentium N4200/J4205

Goldmont Plus (shipped after December 2017)

Celeron N4000/J4005/N4100/J4105

Pentium N5000/J5005

Conroe (shipped after July 2006) Socket LGA775/LGA771

Celeron 220/4xx/E1x00

Pentium E21x0/E22x0

Core2 Duo E4xxx/E6xxx

Core2 Quad Q6xxx

Core2 Extreme X6xxx/QX6xxx

Xeon 30xx/X32x0/51xx/L53xx/L73xx/E53xx/E72xx/E73xx/X53xx/X73xx

Penryn (shipped after November 2007) Socket LGA775/LGA771

Celeron E3xxx

Pentium E2210/E5xxx/E6xxx

Core2 Duo E7xxx/E8xxx

Core2 Quad Q8xxx/Q9x0x/Q9x5x

Core2 Extreme QX9xxx/QX9xx5

Xeon 31x0/30x4/31x3/X33x0/X33x3/E52xx/L52xx/X52xx/E54xx/L54xx/X54xx

Nehalem “45nm” (shipped after November 2008) Socket LGA1156/LGA1366/LGA1567

Celeron P1053

Core i5-7x0

Core i7-8xx/9xx

Xeon E55xx/E65x0/E75x0/L3426/L55xx/L75x5/X34x0/X55x0/X6550/X75xx/LC35x8/LC55x8/EC3539/EC55x9/W35xx/W55x0

Westmere “32nm” (shipped after January 2010) Socket LGA1156/LGA1366/LGA1567

Celeron G1101

Pentium G69xx

Core i3-5x0

Core i5-6xx

Core i7-9x0

Xeon L340x/L56xx/E56xx/W36x0/X56xx

Xeon E7-28xx/48xx/88xx

Sandy Bridge “2nd Gen” (shipped after January 2011) Socket LGA1155/LGA2011/LGA1356

Celeron G4xx/G5xx

Pentium G6xx/G8xx/350/140x

Core i3-21xx

Core i5-23x0/24x0/25x0

Core i7-2600/2700/3820/39x0

Xeon E3-12xx

Xeon E5-14xx/16xx/24xx/26xx/46xx

Ivy Bridge “3rd Gen” (shipped after April 2012) Socket LGA1155/LGA2011/LGA1356

Celeron G16x0

Pentium G20x0/21x0/14xx v2

Core i3-32xx

Core i5-33xx/34xx/35x0

Core i7-3770/4820/49x0

Xeon E3-12xx v2

Xeon E5-14xx v2/16x0 v2/24xx v2/26xx v2/46xx v2

Xeon E7-28x0 v2/48x0 v2/88xx v2

Haswell “4th Gen” (shipped after June 2013) Socket LGA1150/LGA2011 v3/LGA2011

Celeron G18x0

Pentium G32xx/34x0

Core i3-41x0/43x0

Core i5-44x0/45x0/46x0

Core i7-47xx/5820/59x0

Xeon E3-12xx v3

Xeon E5-16xx v3/26xx v3

Xeon E7-48xx/88xx v3

Broadwell “5th Gen” (shipped after June 2015) Socket LGA1150/LGA2011 v3

Core i5-5675C

Core i7-5775C/68x0/69x0

Pentium D-15xx

Xeon D-15xx

Xeon E3-12x5 v4

Xeon E5-16x0 v4/26xx v4

Skylake “6th Gen” (shipped after August 2016) Socket LGA1151/LGA2066/LGA3647

Celeron G3900/G3920

Pentium G4400/G4500/G4520

Core i3-6098P/6100/63x0

Core i5-6402P/6400/6500/6600

Core i7-6700/78x0

Core i9-79x0

Xeon E3-12xx v5

Xeon W-21xx

Xeon Bronze 31xx/Silver 41xx/Gold 51xx/Gold 61xx/Platinum 81xx

Kaby Lake “7th Gen” (shipped after January 2017) Socket LGA1151/LGA2066

Celeron G3930/G3950

Pentium G4560/G46x0

Core i3-710x/73x0

Core i5-7400/7500/7600/7640X

Core i7-7700/7740X

Xeon E3-12xx v6

Coffee Lake “8th Gen” (shipped after October 2017) Socket LGA1151

Celeron G49x0

Pentium Gold G54x0/55x0/56x0

Core i3-80x0/81x0/83x0

Core i5-84x0/85x0/86x0

Core i7-8670/8700

Xeon E-21xx

Security patches

  • Windows 10 should have already released the security patch
  • Windows 8 is supposed to be 16th January.

CPU not affected

Not affected:

Share more information in this thread as you find it.