[Bug 269780] O_RESOLVE_BENEATH succeeds on ".." on "/"

From: <bugzilla-noreply_at_freebsd.org>
Date: Thu, 23 Feb 2023 13:47:53 UTC

Konstantin Belousov <kib@FreeBSD.org> changed:

           What    |Removed                     |Added
                 CC|                            |kib@FreeBSD.org

--- Comment #1 from Konstantin Belousov <kib@FreeBSD.org> ---
What are the consequences of knowing that fd is root?
In other words, what could an adversary do knowing that, that she could not
do otherwise?

I do not want to introduce a special case in lookup() for this situation,
unless it is indeed a must.

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