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fixed bug #39226: Validity of netif IPv6 address is not always checked

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This commit is contained in:
Ivan Delamer
2015-03-18 11:56:48 -06:00
parent 5812b22662
commit 12e3b52f4d
3 changed files with 10 additions and 5 deletions
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6
src/core/ipv6/nd6.c
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@@ -164,7 +164,8 @@ nd6_input(struct pbuf *p, struct netif *inp)
#if LWIP_IPV6_DUP_DETECT_ATTEMPTS
/* If the target address matches this netif, it is a DAD response. */
for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) {
if (ip6_addr_cmp(ip6_current_dest_addr(), netif_ip6_addr(inp, i))) {
if (!ip6_addr_isinvalid(netif_ip6_addr_state(inp, i)) &&
ip6_addr_cmp(ip6_current_dest_addr(), netif_ip6_addr(inp, i))) {
/* We are using a duplicate address. */
netif_ip6_addr_set_state(inp, i, IP6_ADDR_INVALID);
@@ -292,7 +293,8 @@ nd6_input(struct pbuf *p, struct netif *inp)
if (ip6_addr_isany(ip6_current_src_addr())) {
/* Sender is validating this address. */
for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; ++i) {
if (ip6_addr_cmp(&(ns_hdr->target_address), netif_ip6_addr(inp, i))) {
if (!ip6_addr_isinvalid(netif_ip6_addr_state(inp, i)) &&
ip6_addr_cmp(&(ns_hdr->target_address), netif_ip6_addr(inp, i))) {
/* Send a NA back so that the sender does not use this address. */
nd6_send_na(inp, netif_ip6_addr(inp, i), ND6_FLAG_OVERRIDE | ND6_SEND_FLAG_ALLNODES_DEST);
if (ip6_addr_istentative(netif_ip6_addr_state(inp, i))) {