Eben Upton Explains Why Raspberry Pi Isn’t Vulnerable To Spectre Or Meltdown

Raspberry Pi founder and CEO Eben Upton says the Raspberry Pi isn’t susceptible to the “Spectre” or “Meltdown” vulnerabilities because of the particular ARM cores they use. “Spectre allows an attacker to bypass software checks to read data from arbitrary locations in the current address space; Meltdown allows an attacker to read data from arbitrary locations in the operating system kernel’s address space (which should normally be inaccessible to user programs),” Upton writes. He goes on to provide a “primer on some concepts in modern processor design” and “illustrate these concepts using simple programs in Python syntax…”

In conclusion: “Modern processors go to great lengths to preserve the abstraction that they are in-order scalar machines that access memory directly, while in fact using a host of techniques including caching, instruction reordering, and speculation to deliver much higher performance than a simple processor could hope to achieve,” writes Upton. “Meltdown and


Original URL: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/mOHmWtpC3fY/eben-upton-explains-why-raspberry-pi-isnt-vulnerable-to-spectre-or-meltdown

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