Security Software

Processors Affected: Special Register Buffer Data Sampling

In general, Intel® Core-family microarchitecture client and Intel Xeon E3 processors that implement RDRAND and/or RDSEED and are affected by either Microarchitectural Fill Buffer Data Sampling (MFBDS) or Intel® Transactional Synchronization Extensions (Intel® TSX) Asynchronous Abort may also be affected by Special Register Buffer Data Sampling (SRBDS). Refer to the Deep Dive for further details. 

More precisely, a processor is affected by SRBDS if its Family_Model and stepping is marked as affected in the following table, with the exception of the specifically marked processors exporting MDS_NO while Intel TSX is available yet not enabled. The latter class of processors are only affected when Intel TSX is enabled by software using TSX_CTRL_MSR, otherwise they are not affected.

Processors marked with † may support Intel SGX.

Table 1: Processors potentially affected by SRBDS
Family_Model Step Processor Families /
Processor Number Series
 
Affected
06_3FH All Intel® Xeon® processor E5-4600/2600/1600 v3 product families, and Intel® Xeon® processor E7 v3 product families Intel® Core™ i7-59xx Processor Extreme Edition based on Haswell-E microarchitecture  No
06_3CH,
06_45H,
06_46H
All 4th Generation Intel® Core™ processor and Intel® Xeon® processor E3-1200 v3 product family based on Haswell microarchitecture Yes
06_56H All Intel® Xeon® processor D-1500 product family based on Broadwell microarchitecture No
06_4FH All Intel® Xeon® processor E5 v4 Family based on Broadwell microarchitecture, Intel® Xeon® processor E7 v4 Family, Intel® Core™ i7-69xx Processor Extreme Edition based on Broadwell-E microarchitecture No
06_47H All 5th generation Intel® Core™ processors, Intel® Xeon® processor E3-1200 v4 product family based on Broadwell microarchitecture Yes
06_3DH All Intel® Core™ M-5xxx Processor, 5th generation Intel® Core™ processors based on Broadwell microarchitecture Yes
06_55H <=4 First generation Intel® Xeon® Scalable Processor Family based on Skylake microarchitecture No
06_55H 5-7 Second generation Intel® Xeon® Scalable Processor Family based on Cascade Lake microarchitecture No
06_4EH,
06_5EH
All 6th generation Intel® Core™ processors and Intel® Xeon® processor E3-1500m v5 product family and E3- 1200 v5 product family based on Skylake microarchitecture† Yes
06_8EH <=A 7th/8th generation Intel® Core™ processors, Intel Xeon processor E3 v6 product family and Intel Xeon-E Processor product family based on Kaby Lake/Coffee Lake microarchitectures† Yes
06_9EH <=B 7th/8th generation Intel® Core™ processors based on Kaby Lake/Coffee Lake microarchitecture† Yes
06_9EH 0xC 8th/9th generation Intel® Core™ processors, Intel® Pentium™ processors, and Intel Xeon E processor family based on Coffee Lake microarchitecture† Yes
06_8EH 0xB 8th Generation Intel® Core™ i7 Processors, Intel® Pentium® Gold Processor Series, and Intel® Celeron® Processor 4000 Series based on Whiskey Lake (ULT, refresh and desktop) microarchitecture† Yes
06_8EH 0xC 8th Generation Intel® Core™ i7 Processors, Intel® Pentium® Gold Processor Series, and Intel® Celeron® Processor 4000 Series based on Whiskey Lake (ULT, refresh and desktop) microarchitecture†
8th/10th Generation Intel® Core™ processors based on Amber Lake Y†
Yes
06_9EH 0xD Intel Xeon E-2200 Processor product family based on Coffee Lake-R microarchitecture† Yes
06_A5H,
06_A6H
All 10th Generation Intel® Core™ Processors product family based on Comet Lake No
06_7DH,
06_7EH
All 10th Generation Intel® Core™ processors based on Ice Lake microarchitecture† No

06_4CH,
06_5CH
06_37H,
06_4AH,
06_4DH,
06_5AH,
06_5DH,
06_6EH,
06_65H,
06_75H

All Intel Atom® (Silvermont, Airmont) No
06_5CH,
06_5FH,
06_7AH
All Intel Atom® (Goldmont, GoldmontPlus†) No
06_86H All Intel Atom® P5900 (Tremont) No
06_57H,
06_85H
All Intel® Xeon Phi™ x200 and 72x5 product families based on Knights Landing and Knights Mill microarchitectures No

 


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