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Eventually implement landlock LSM for restricting abstract unix sockets #877

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opened 2025-06-25 14:28:22 +00:00 by jade · 2 comments
jade commented 2025-06-25 14:28:22 +00:00
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Someone, I think @vriska, pointed out on matrix that it’s possible to landlock unix sockets into just their own landlock zone thing. This sounds sick, we should do it.

Problem is that they’re restricted to 6.12 and higher, or whatever libc bump we need for the headers. We could feature detect but it’ll be a pain until we have headers for it in stable nixpkgs, which maybe we do already?

Someone, I think @vriska, pointed out on matrix that it’s possible to landlock unix sockets into just their own landlock zone thing. This sounds sick, we should do it. Problem is that they’re restricted to 6.12 and higher, or whatever libc bump we need for the headers. We could feature detect but it’ll be a pain until we have headers for it in stable nixpkgs, which maybe we do already?
raito commented 2025-06-25 14:42:01 +00:00
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25.05 has 6.12 but I'm not a big fan of it because VM tests that makes intense use of 9pfs cannot use 6.12 due to 9pfs folio management being broken there, FWIW.

25.05 has 6.12 but I'm not a big fan of it because VM tests that makes intense use of 9pfs cannot use 6.12 due to 9pfs folio management being broken there, FWIW.
vriska commented 2025-06-25 19:23:08 +00:00
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We could feature detect but it’ll be a pain until we have headers for it in stable nixpkgs, which maybe we do already?

Nixpkgs 25.05's linuxHeaders is from 6.12, so I think doing feature detection is probably fine?

> We could feature detect but it’ll be a pain until we have headers for it in stable nixpkgs, which maybe we do already? Nixpkgs 25.05's `linuxHeaders` is from 6.12, so I think doing feature detection is probably fine?
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Reference: lix-project/lix#877
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