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-rw-r--r--net/ipv6/ndisc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index e640d2f3c55c..0ec273997d1d 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -811,7 +811,7 @@ static void ndisc_recv_ns(struct sk_buff *skb)
return;
}
}
- if (ndopts.nd_opts_nonce)
+ if (ndopts.nd_opts_nonce && ndopts.nd_opts_nonce->nd_opt_len == 1)
memcpy(&nonce, (u8 *)(ndopts.nd_opts_nonce + 1), 6);
inc = ipv6_addr_is_multicast(daddr);