Re: [PATCH] fuse: Only allow read/writing user xattrs

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Eric Paris <eparis@xxxxxxxxxxxxxx> writes:

> Why trust uids or rwx bits.  Might as well do away with those as well,
> right?

Lying to your own userspace processes (which you can do with LD_PRELOAD)
is rather different than lying to the selinux or the smack modules.

What I am saying with my patch is that fuse is remarkably non-nuanced
in how it interacts with extended attributes, and that it appears
very clear that there are bugs in the area of unprivileged mounts that
need to be addressed.

I am happy to hear about better solutions.  Telling me it's not a bug
and sticking your head in the sand is quite amusing.

Eric


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