Published on: 2025-05-11 19:46:19
This post is the result of me going down a several week long XNU rabbit-hole after reading this post by Thomas Claburn on Exclaves, more on that later. I’ve tried my best to condense all the information into a single blog post. I’ve also tried to keep sections self-contained so you can skip around using the table of contents, this does come at the cost of repeating myself in some places, so thanks in advance for your patience. While I’m confident of my understanding on this topic, some errors ar
Keywords: apple kernel mach memory xnu
Find related items on AmazonPublished on: 2025-05-12 00:46:19
This post is the result of me going down a several week long XNU rabbit-hole after reading this post by Thomas Claburn on Exclaves, more on that later. I’ve tried my best to condense all the information into a single blog post. I’ve also tried to keep sections self-contained so you can skip around using the table of contents, this does come at the cost of repeating myself in some places, so thanks in advance for your patience. While I’m confident of my understanding on this topic, some errors ar
Keywords: apple kernel mach memory xnu
Find related items on AmazonPublished on: 2025-06-26 10:40:03
Apple has been working to harden the XNU kernel that powers its various operating systems, including iOS and macOS, with a feature called "exclaves." The term appears to have first surfaced in a libc file in Apple's open source software collection in 2023, and subsequently within iOS 17, released in September of that year, as later noted by Howard Oakley on his Eclectic Light Co blog. Exclaves, Oakley observed last June, are believed to implement "domains isolated from the kernel that protect
Keywords: apple exclaves kernel security xnu
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