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authorXin Long <lucien.xin@gmail.com>2019-10-28 23:19:35 +0800
committerDavid S. Miller <davem@davemloft.net>2019-10-29 17:36:42 -0700
commit2eb8d6d2910cfe3dc67dc056f26f3dd9c63d47cd (patch)
tree5490ad73490d3235a4da373fe744a0a9f8087951 /net/ipv4/fib_rules.c
parente56bd641ca61beb92b135298d5046905f920b734 (diff)
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erspan: fix the tun_info options_len check for erspan
The check for !md doens't really work for ip_tunnel_info_opts(info) which only does info + 1. Also to avoid out-of-bounds access on info, it should ensure options_len is not less than erspan_metadata in both erspan_xmit() and ip6erspan_tunnel_xmit(). Fixes: 1a66a836da ("gre: add collect_md mode to ERSPAN tunnel") Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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