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Merge pull request #9686 from idryzhov/fix-nda-lladdr

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zebra: fix buffer overflow
This commit is contained in:
Donald Sharp 2021-10-12 12:04:00 -04:00 committed by GitHub
commit ba3df8987f
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1 changed files with 1 additions and 2 deletions
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zebra/rt_netlink.c
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@ -3744,7 +3744,6 @@ static int netlink_ipneigh_change(struct nlmsghdr *h, int len, ns_id_t ns_id)
if (tb[NDA_LLADDR]) {
/* copy LLADDR information */
l2_len = RTA_PAYLOAD(tb[NDA_LLADDR]);
memcpy(&mac, RTA_DATA(tb[NDA_LLADDR]), l2_len);
}
if (l2_len == IPV4_MAX_BYTELEN || l2_len == 0) {
union sockunion link_layer_ipv4;
@ -3752,7 +3751,7 @@ static int netlink_ipneigh_change(struct nlmsghdr *h, int len, ns_id_t ns_id)
if (l2_len) {
sockunion_family(&link_layer_ipv4) = AF_INET;
memcpy((void *)sockunion_get_addr(&link_layer_ipv4),
&mac, l2_len);
RTA_DATA(tb[NDA_LLADDR]), l2_len);
} else
sockunion_family(&link_layer_ipv4) = AF_UNSPEC;
zsend_nhrp_neighbor_notify(