diff options
| author | Balazs Nemeth <bnemeth@redhat.com> | 2021-03-09 12:31:01 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-03-17 16:10:13 +0100 |
| commit | 3dab7f96b85ebe13c9c8831632add6831bb64ad0 (patch) | |
| tree | 8c0115639433fca5e3d6765d453cde6d6d79bdd0 /include | |
| parent | d04c87722f072a056523d354885a74b41f4d6836 (diff) | |
net: avoid infinite loop in mpls_gso_segment when mpls_hlen == 0
commit d348ede32e99d3a04863e9f9b28d224456118c27 upstream.
A packet with skb_inner_network_header(skb) == skb_network_header(skb)
and ETH_P_MPLS_UC will prevent mpls_gso_segment from pulling any headers
from the packet. Subsequently, the call to skb_mac_gso_segment will
again call mpls_gso_segment with the same packet leading to an infinite
loop. In addition, ensure that the header length is a multiple of four,
which should hold irrespective of the number of stacked labels.
Signed-off-by: Balazs Nemeth <bnemeth@redhat.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions