thumb | right | Intel Pentium processor
The Pentium F00F bug is a design flaw in the majority of Intel's Pentium, Pentium MMX, and Pentium OverDrive processors (all in the P5 microarchitecture). Discovered in 1997, it can result in the processor ceasing to function until the computer is physically rebooted. The bug has been circumvented through operating system updates.
The name is shorthand for <code>F0 0F C7 C8</code>, the hexadecimal encoding of one offending instruction.
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Further reading
External links
- Intel Pentium erratum
- Microsoft Knowledge Base article
- F00F CVE bug entry