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The CPU is a simple stack virtual machine with a specialized reduced instruction set. Execution algorithm: The VM fetches an opcode from system memory pointed by CS:IP. There is a table of instruction ...

Continuing his reverse-engineering of the Intel 8087, [Ken Shirriff] covers the conditional tests that are implemented in the microcode of this floating point processing unit (FPU). This microcode ...

A hot potato: Users with 13th- and 14th-generation Intel desktop processors should begin checking for BIOS updates from their motherboard providers. A new microcode update fixes edge cases that can ...

AMD has released mitigation and firmware updates to address a high-severity vulnerability that can be exploited to load malicious CPU microcode on unpatched devices. The security flaw (CVE-2024-56161) ...

AMD on Monday announced patches for a microprocessor vulnerability that could lead to loss of Secure Encrypted Virtualization (SEV) protection, allowing attackers to load malicious microcode. Tracked ...

A security vulnerability has been disclosed in AMD's Secure Encrypted Virtualization (SEV) that could permit an attacker to load a malicious CPU microcode under specific conditions. The flaw, tracked ...

When AMD finally issued patches for its critical microcode security hole on Monday, it said that the glitch 'could lead to the loss of Secure Encrypted Virtualization protection.' AMD on Monday issued ...

What just happened? AMD has confirmed a security vulnerability in some of its processors, which was inadvertently revealed through a beta BIOS update from Asus. The flaw, described as a "microcode ...

AMD has confirmed an unpatched “processor vulnerability” that may require CISOs to isolate their systems or even air gap them until there’s a fix. AMD has had to confirm the existence of a major ...