Bootrom

The Patch That Isn't There: palera1n and the Rootless Era

ios
apple
security

The modern checkm8 continuation patches code signing, mount policy and task ports, and has no page-protection patch at all. What the gap in its own patch set says about the boundary everyone assumes is being crossed.

One Stale Pointer Before the OS Boots: checkm8 and the Boot ROM Era

ios
apple
security

The boot ROM is the one component no update can reach, so a bug in it is a bug in the hardware’s own trust anchor. What checkm8 established about unpatchable vulnerabilities, read from the public record rather than from a device.