For an old CPU, finding all the valid instructions wasn’t very hard. You simply tried them all. Sure, really old CPUs might make it hard to tell what the instruction did, but once CPUs got illegal ...

Inside every modern CPU since the Intel Pentium fdiv bug, assembly instructions aren’t a one-to-one mapping to what the CPU actually does. Inside the CPU, there is a decoder that turns assembly into ...

Microsoft has released a new batch of Intel microcode updates for Windows 10 2004, 1909, 1903, and older versions to fix hardware bugs in Intel CPUs. When Intel finds bugs in their CPUs, they release ...

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Last month, the Google Security Team identified a security vulnerability in AMD's CPUs ranging from Zen 1 to Zen 4 dubbed "EntrySign" that allowed malicious users with ring 0 access to load unsigned ...

Intel has spent most of 2024 investigating and trying to fix a problems that was causing crashes and instability for owners of its high-end 13th- and 14th-generation Core desktop processors. In April, ...

A team of Google researchers working with AMD recently discovered a major CPU exploit on Zen-based processors. The exploit allows anyone with local admin privileges to write and push custom microcode ...

My understanding was that a CPU microcode update is stored in non-volatile memory on the motherboard and is loaded by the BIOS or UEFI into volatile memory on the CPU during boot. And because the ...

Microsoft has released a new set of Intel microcode updates for Windows 10 20H2, 2004, 1909, and older versions to fix bugs impacting multiple Intel CPU families. Microcode updates are released by ...

Intel has announced the deployment of microcode update 0x12B aimed at resolving the Vmin offset instability observed in its 13th and 14th series desktop processors, as they have now identified the ...