Balazs Nemeth 453fff24f5 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>		2021-03-17 17:06:11 +01:00
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af_mpls.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
internal.h	net: Make mpls_entry_encode() available for generic users	2020-05-29 21:20:20 -07:00
Kconfig	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
mpls_gso.c	net: avoid infinite loop in mpls_gso_segment when mpls_hlen == 0	2021-03-17 17:06:11 +01:00
mpls_iptunnel.c	mpls: load mpls_gso after mpls_iptunnel	2020-10-20 21:16:45 -07:00