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Fixed bug #39956 (netif_create_ip6_linklocal_address out of bounds access of netif::hwaddr)

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sg 2015-03-04 20:58:37 +01:00
parent 90a0590de1
commit 12514c09b2
1 changed files with 2 additions and 3 deletions
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5
src/core/netif.c
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@ -884,14 +884,13 @@ netif_create_ip6_linklocal_address(struct netif * netif, u8_t from_mac_48bit)
((u32_t)(netif->hwaddr[3]) << 16) |
((u32_t)(netif->hwaddr[4]) << 8) |
(netif->hwaddr[5]));
}
else {
} else {
/* Use hwaddr directly as interface ID. */
netif->ip6_addr[0].addr[2] = 0;
netif->ip6_addr[0].addr[3] = 0;
addr_index = 3;
for (i = 0; i < 8; i++) {
for (i = 0; (i < 8) && (i < netif->hwaddr_len); i++) {
if (i == 4) {
addr_index--;
}