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| author | Eric Dumazet <edumazet@google.com> | 2018-01-18 19:59:19 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-01-31 12:06:13 +0100 |
| commit | f50fc5f4f3e5f0d2b55cd09c01f3a09d0ddeb9dc (patch) | |
| tree | 6380ae87146a7b3c81242a8527c933726bac4d2f /lib/mpi/mpi-inline.h | |
| parent | bed42ef5ebbfc046e0440f7e0f941cc07f8ca1e8 (diff) | |
net: qdisc_pkt_len_init() should be more robust
[ Upstream commit 7c68d1a6b4db9012790af7ac0f0fdc0d2083422a ]
Without proper validation of DODGY packets, we might very well
feed qdisc_pkt_len_init() with invalid GSO packets.
tcp_hdrlen() might access out-of-bound data, so let's use
skb_header_pointer() and proper checks.
Whole story is described in commit d0c081b49137 ("flow_dissector:
properly cap thoff field")
We have the goal of validating DODGY packets earlier in the stack,
so we might very well revert this fix in the future.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Cc: Jason Wang <jasowang@redhat.com>
Reported-by: syzbot+9da69ebac7dddd804552@syzkaller.appspotmail.com
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib/mpi/mpi-inline.h')
0 files changed, 0 insertions, 0 deletions