From: Mickaël Salaün <m...@digikod.net> Date: Mon, 7 Aug 2017 20:45:20 +0200
> The function check_uarg_tail_zero() was created from bpf(2) for > BPF_OBJ_GET_INFO_BY_FD without taking the access_ok() nor the PAGE_SIZE > checks. Make this checks more generally available while unlikely to be > triggered, extend the memory range check and add an explanation > including why the ToCToU should not be a security concern. > > Signed-off-by: Mickaël Salaün <m...@digikod.net> > Acked-by: Daniel Borkmann <dan...@iogearbox.net> > Cc: Alexei Starovoitov <a...@kernel.org> > Cc: David S. Miller <da...@davemloft.net> > Cc: Kees Cook <keesc...@chromium.org> > Cc: Martin KaFai Lau <ka...@fb.com> > Link: > https://lkml.kernel.org/r/CAGXu5j+vRGFvJZmjtAcT8Hi8B+Wz0e1b6VKYZHfQP_=dxzc...@mail.gmail.com Applied.
