Re:Intel Issues Updates to Protect Systems from Security Exp...
by MertsA on Friday January 05, 2018 @03:29AM
(#16077353)
To elaborate on this, the write to the array isn't what's being read here.
array[value_of_kernel_memory_byte] = 1;
This assignment gets rolled back like it's supposed to. It's when reading the array after the rollback that the exploit measures that a read to array[value_of_kernel_memory_byte] is faster than the rest because that index is already in the cache.
array[value_of_kernel_memory_byte] = 1;
This assignment gets rolled back like it's supposed to. It's when reading the array after the rollback that the exploit measures that a read to array[value_of_kernel_memory_byte] is faster than the rest because that index is already in the cache.