Encrypted Computing as a Protection from Kernel Vulnerabilities

The text discusses the security vulnerabilities known as Meltdown and Spectre, which exploit the speculative execution capabilities of modern CPUs, such as Intel's and the Arm Cortex-A75, to access protected kernel memory. These vulnerabilities allow normal applications to read sensitive information like passwords and cryptographic keys, potentially compromising system security. Meltdown specifically affects Intel CPUs by undermining memory isolation, while Spectre can expose data by allowing speculative execution without proper checks. The text suggests that encrypted computing technologies, such as homomorphic encryption, could mitigate these risks by ensuring sensitive information remains encrypted, rendering it useless if accessed by unauthorized programs.

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