Merge pull request #5619 from qlyoung/fix-zebra-netlink-undefined-bitshift

[mirror_frr.git] / pimd / pim_mroute.c

diff --git a/pimd/pim_mroute.c b/pimd/pim_mroute.c
index 1fe2289a8ef934dacb709216741618bd4f1c8a1a..3459abbc191c3626c227bed4155d8d631eb9d985 100644 (file)
--- a/pimd/pim_mroute.c
+++ b/pimd/pim_mroute.c
@@ -590,6 +590,9 @@ static int pim_mroute_msg(struct pim_instance *pim, const char *buf,
        struct in_addr ifaddr;
        struct igmp_sock *igmp;
 
+       if (buf_size < (int)sizeof(struct ip))
+               return 0;
+
        ip_hdr = (const struct ip *)buf;
 
        if (ip_hdr->ip_p == IPPROTO_IGMP) {