Re: [PATCH 1/2 net] ip_gre: add validation for csum_start
From: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
Date: 2021-08-21 13:42:22
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On Sat, Aug 21, 2021 at 3:14 AM Shreyansh Chouhan [off-list ref] wrote:
Validate csum_start in gre_handle_offloads before we call _gre_xmit so
that we do not crash later when the csum_start value is used in the
lco_csum function call.
This patch deals with ipv4 code.
Fixes: c54419321455 ("GRE: Refactor GRE tunneling code.")
Reported-by: syzbot+ff8e1b9f2f36481e2efc@syzkaller.appspotmail.com
Signed-off-by: Shreyansh Chouhan <redacted>Reviewed-by: Willem de Bruijn <willemb@google.com>