Balazs Nemeth 8baa52f26b net: avoid infinite loop in mpls_gso_segment when mpls_hlen == 0 ... commit d348ede32e 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 17:03:31 +01:00
..
af_mpls.c	net: ipv6_stub: use ip6_dst_lookup_flow instead of ip6_dst_lookup	2019-12-18 16:08:42 +01:00
internal.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
Kconfig	mpls: fix af_mpls dependencies for real	2019-06-12 09:42:34 -07:00
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 17:03:31 +01:00
mpls_iptunnel.c	ipv4: mpls: fix mpls_xmit for iptunnel	2019-08-25 14:34:08 -07:00