Messages in this thread | | | Date | Thu, 21 Feb 2013 08:26:32 -0800 | Subject | Re: [GIT] Security subsystem updates for 3.9 | From | Linus Torvalds <> |
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On Thu, Feb 21, 2013 at 6:03 AM, James Morris <jmorris@namei.org> wrote: > This is basically a maintenance update for the TPM driver and EVM/IMA.
Hmm. There were conflicts in lib/digsig.c and ima_main.c. The digsig one was pretty trivial, but I'd like people to take a look at the IMA one.
And that's not because the conflict itself was all that complex - I'm pretty sure I resolved it correctly. But I do want to make sure that everybody agrees on the whole module integrity checking thing. I resolved it to be like the semantics in Mimi's commit a7f2a366f623, which means that for non-file modules, IMA does:
Only fail the non-file module if (a) IMA_APPRAISE_MODULES was set *and* (b) CONFIG_MODULE_SIG_FORCE is not set.
If CONFIG_MODULE_SIG_FORCE it ignores IMA_APPRAISE_MODULES entirely, and the module signature checking overrides everything. And if IMA_APPRAISE_MODULES is not set, we say "whatever". So it makes sense, but I wanted people to just be aware of it and agree on it, since the security tree modified this part without apparently being aware of the changed semantics.
Linus
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