docs: clarify security-bugs disclosure policy

I think we need to soften the language a bit.  It might scare folks
off, especially the:

	 We prefer to fully disclose the bug as soon as possible.

which is not really the case.  Linus says:

	It's not full disclosure, it's not coordinated disclosure,
	and it's not "no disclosure".  It's more like just "timely
	open fixes".

I changed a bit of the wording in here, but mostly to remove the word
"disclosure" since it seems to mean very specific things to people
that we do not mean here.

Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Alan Cox <gnomes@lxorguk.ukuu.org.uk>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/admin-guide/security-bugs.rst

@@ -29,18 +29,20 @@ made public.
 Disclosure
 ----------
 
-The goal of the Linux kernel security team is to work with the
+The goal of the Linux kernel security team is to work with the bug
-bug submitter to bug resolution as well as disclosure.  We prefer
+submitter to understand and fix the bug.  We prefer to publish the fix as
-to fully disclose the bug as soon as possible.  It is reasonable to
+soon as possible, but try to avoid public discussion of the bug itself
-delay disclosure when the bug or the fix is not yet fully understood,
+and leave that to others.
-the solution is not well-tested or for vendor coordination.  However, we
+
-expect these delays to be short, measurable in days, not weeks or months.
+Publishing the fix may be delayed when the bug or the fix is not yet
-A disclosure date is negotiated by the security team working with the
+fully understood, the solution is not well-tested or for vendor
-bug submitter as well as vendors.  However, the kernel security team
+coordination.  However, we expect these delays to be short, measurable in
-holds the final say when setting a disclosure date.  The timeframe for
+days, not weeks or months.  A release date is negotiated by the security
-disclosure is from immediate (esp. if it's already publicly known)
+team working with the bug submitter as well as vendors.  However, the
+kernel security team holds the final say when setting a timeframe.  The
+timeframe varies from immediate (esp. if it's already publicly known bug)
 to a few weeks.  As a basic default policy, we expect report date to
-disclosure date to be on the order of 7 days.
+release date to be on the order of 7 days.
 
 Coordination
 ------------