"mentions backdoors"... nobody is saying they have found a backdoor in the leak, they just suggest looking to see if there is one. This headline is fantastically overly sensational, to a level of irresponsibility.
>This code, to us, appears to involve the handling of memory error detection and correction rather than a "backdoor" in the security sense. The IOH SR 17 probably refers to scratchpad register 17 in the I/O hub, part of Intel's chipsets, that is used by firmware code.
https://www.theregister.com/2020/08/06/intel_nda_source_code...