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Subject: [Bug 214881] jail with path=/ and sysctl.disablefullpath=1 leads to
 NULL dereference
Date: Mon, 28 Nov 2016 13:24:47 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D214881

Konstantin Belousov <kib@FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jamie@FreeBSD.org,
                   |                            |kib@FreeBSD.org

--- Comment #1 from Konstantin Belousov <kib@FreeBSD.org> ---
(In reply to aler from comment #0)
I suspect that this is just a thinko, the case path =3D=3D NULL is handled =
later.=20
OTOH, it is not clear to me that path =3D=3D NULL should result in the '0' =
addend
to len in the check.

If you do consider the right action to be cleanup, then the failing len che=
ck
already provides an example what to do.  Anyway, I am attaching patch with
simple additional check for path =3D=3D NULL.

--=20
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