Processors Affected: L1 Terminal Fault

ID 660249
Updated 8/14/2018
Version Latest



Intel expects that the following products are potentially affected by these issues. However, processors that have the RDCL_NO bit set to one (1) in the IA32_ARCH_CAPABILITIES MSR are not susceptible to the L1TF speculative execution side channel method. Refer to Intel Analysis of L1 Terminal Fault for complete details.

Table 3. Processors Affected by L1TF
DisplayFamily_DisplayModel Processor Families/Processor Number Series
7th generation Intel® Core™ processors based on Kaby Lake microarchitecture
06_55H Intel® Xeon® Processor Scalable Family based on Skylake microarchitecture
6th generation Intel Core processors and Intel Xeon processor E3-1500m v5 product family and E3- 1200 v5 product family based on Skylake microarchitecture
06_56H Intel Xeon processor D-1500 product family based on Broadwell microarchitecture
06_4FH Intel Xeon processor E5 v4 Family based on Broadwell microarchitecture, Intel Xeon processor E7 v4 Family, Intel Core i7-69xx Processor Extreme Edition
06_47H 5th generation Intel Core processors, Intel Xeon processor E3-1200 v4 product family based on Broadwell microarchitecture
06_3DH Intel Core M-5xxx Processor, 5th generation Intel Core processors based on Broadwell microarchitecture
06_3FH Intel Xeon processor E5-4600/2600/1600 v3 product families, Intel Xeon processor E7 v3 product families based on Haswell-E microarchitecture, Intel Core i7-59xx Processor Extreme Edition
4th Generation Intel Core processor and Intel Xeon processor E3-1200 v3 product family based on Haswell microarchitecture
06_3EH Intel Xeon processor E7-8800/4800/2800 v2 product families based on Ivy Bridge-E microarchitecture
06_3EH Intel Xeon processor E5-2600/1600 v2 product families and Intel Xeon processor E5-2400 v2 product family based on Ivy Bridge-E microarchitecture, Intel Core i7-49xx Processor Extreme Edition
06_3AH 3rd Generation Intel Core Processor and Intel Xeon processor E3-1200 v2 product family based on Ivy Bridge microarchitecture
06_2DH Intel Xeon processor E5 Family based on Intel microarchitecture code name Sandy Bridge, Intel Core i7-39xx Processor Extreme Edition
06_2FH Intel Xeon Processor E7 Family (Westmere-EX)
06_2AH Intel Xeon processor E3-1200 product family; 2nd Generation Intel Core i7, i5, i3 Processors 2xxx Series (Sandy Bridge)
06_2EH Intel Xeon processor 7500, 6500 series (Nehalem-EX)
Intel Xeon processors 3600, 5600 series, Intel Core i7, i5 and i3 Processors (Westmere, Westmere-EP)
Intel Core i7 and i5 Processors (Nehalem, Nehalem-G)
06_1AH Intel Core i7 Processor, Intel Xeon processor 3400, 3500, 5500 series (Nehalem-EP)
06_1DH Intel Xeon processor MP 7400 series (Dunnington)
06_17H Intel Xeon processor 3100, 3300, 5200, 5400 series, Intel Core 2 Quad processors 8000, 9000 series (Penryn)
06_* Intel Xeon and Core processors based on Merom and earlier generations are potentially affected


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