For example, Thor Larholm at PiVX points out that microcode utilities for CPUs are available from both Intel and AMD, complete with source code.

Introduction The Intel Microcode 0x129 BIOS fix has now been released to motherboard manufacturers, and motherboard manufacturers have now released official non-Beta BIOS for many motherboards. We ...

The aptly-named [chip-red-pill] team is offering you a chance to go down the Intel rabbit hole. If you learned how to build CPUs back in the 1970s, you would learn that your instruction decoder wou… ...

The condition PLA evaluates microcode conditionals. As simple as a processor’s instruction set may seem, especially in a 1978-era one like the Intel 8086, there is quite a bit going on to go ...

On January 8th Intel released new Linux Processor microcode data files that can be used to mitigate the Spectre and and Meltdown vulnerabilities in Intel CPUs. Using microcodes, an operating ...

Security researchers Mark Ermolov, Dmitry Sklyarov, and Maxim Goryachy discovered two undocumented x86 instructions that can be used to modify the CPU microcode. The instructions can only be executed ...

Up to this point, Intel’s guidance has been a list of dense BIOS settings that could reduce performance by upwards of 9% on CPUs like the Core i9-13900K and Core i9-14900K. The microcode update ...

AMD’s unpatched chip microcode glitch may require extreme measures by CISOs News Jan 23, 2025 6 mins Bugs CSO and CISO Security ...

A couple of motherboard vendors have already announced BIOS updates that address issues within the microcode of Intel’s 13th- and 14th-gen CPUs. With more to come, things might be looking up for ...

Unfortunately, a microcode bug—originally discovered in July but still floating around in large numbers in the wild—wrecked my good time. I eventually got my Ryzen 3700X system working, and it ...

As noted on the support page for Windows 10 version 1803, the microcode updates include mitigations for Spectre Variant 3a, CVE-2018-3640, Spectre Variant 4, CVE-2018-3639, as well as two of the ...