Messages in this thread | | | From | Kees Cook <> | Date | Tue, 2 Oct 2018 13:52:32 -0700 | Subject | Re: [PATCH] yama: clarify ptrace_scope=2 in Yama documentation |
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On Tue, Oct 2, 2018 at 1:47 PM, Yves-Alexis Perez <corsac@corsac.net> wrote: > Current phrasing is ambiguous since it's unclear if attaching to a > children through PTRACE_TRACEME requires CAP_SYS_PTRACE. Rephrase the > sentence to make that clear. > > Signed-off-by: Yves-Alexis Perez <corsac@corsac.net>
Thanks! Yes, this makes things more clear.
Acked-by: Kees Cook <keescook@chromium.org>
Jon, can you take this in your tree?
-Kees
> --- > Documentation/admin-guide/LSM/Yama.rst | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/Documentation/admin-guide/LSM/Yama.rst b/Documentation/admin-guide/LSM/Yama.rst > index 13468ea696b7..d0a060de3973 100644 > --- a/Documentation/admin-guide/LSM/Yama.rst > +++ b/Documentation/admin-guide/LSM/Yama.rst > @@ -64,8 +64,8 @@ The sysctl settings (writable only with ``CAP_SYS_PTRACE``) are: > Using ``PTRACE_TRACEME`` is unchanged. > > 2 - admin-only attach: > - only processes with ``CAP_SYS_PTRACE`` may use ptrace > - with ``PTRACE_ATTACH``, or through children calling ``PTRACE_TRACEME``. > + only processes with ``CAP_SYS_PTRACE`` may use ptrace, either with > + ``PTRACE_ATTACH`` or through children calling ``PTRACE_TRACEME``. > > 3 - no attach: > no processes may use ptrace with ``PTRACE_ATTACH`` nor via > -- > 2.19.0 > > > -- > Yves-Alexis
-- Kees Cook Pixel Security
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