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Pixel 11’s missing memory tagging may block a full GrapheneOS port

discuss.grapheneos.org 3 min read Editor score 7/10

GrapheneOS says the Pixel 11 series lacks the ARM hardware memory tagging support needed to complete its port, a feature the project uses to harden the OS and kernel. The case shows how device-level security features constrain hardened software.

What

GrapheneOS has a partial Pixel 11 port but cannot complete it without ARM hardware memory tagging support in software, firmware, and potentially hardware.

How

GrapheneOS uses MTE across the base OS, including the kernel and standard processes, to improve protection against many exploits.

Why it matters

The missing feature blocks a full port, underscoring how device-level support across the software and hardware stack can constrain security.

Read on discuss.grapheneos.org → Hacker News · 303 comments

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