this post was submitted on 30 Aug 2026
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GrapheneOS project: pixel 11 no longer supports hardware memory tagging (MTE); GrapheneOS might skip the the whole pixel 11 series (grapheneos.social)
submitted 17 hours ago by beep@piefed.world to c/technology@lemmy.world
24 comments fedilink hide all child comments
 

cross-posted from: https://piefed.world/c/tech/p/1368563/grapheneos-project-pixel-11-no-longer-supports-hardware-memory-tagging-mte

Bluesky.

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[–] willington@lemmy.dbzer0.com 7 points 2 hours ago* (last edited 1 hour ago)

Apparently the Linux kernel can emulate MTE in software:

https://lwn.net/Articles/833353/

The software MTE support in the kernel apparently predates the hardware support of the same, based on the above link.

Admittedly I might be misunderstanding something here, my confidence level is only 65%.

p.s.: i just learned that this uses a lot of extra RAM compared to hardware MTE. there seem to be approaches to mitigate the RAM blow up, but this discussion is above my paygrade, so I have to bow out. That said, I think it is correct that the absense of hardware MTE should not be the end of the road for secure smartphone design.