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Merge pull request #5585 from qlyoung/fix-pimd-mtrace-missing-length-check

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pimd: fix missing igmp mtrace length check
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Jafar Al-Gharaibeh 2019-12-22 12:36:08 -06:00 committed by GitHub
commit 4253e8d0ca
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1 changed files with 10 additions and 0 deletions
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10
pimd/pim_igmp_mtrace.c
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@ -864,6 +864,16 @@ int igmp_mtrace_recv_response(struct igmp_sock *igmp, struct ip *ip_hdr,
pim_ifp = ifp->info; pim_ifp = ifp->info;
pim = pim_ifp->pim; pim = pim_ifp->pim;
if (igmp_msg_len < (int)sizeof(struct igmp_mtrace)) {
if (PIM_DEBUG_MTRACE)
zlog_warn(
"Recv mtrace packet from %s on %s: too short,"
" len=%d, min=%zu",
from_str, ifp->name, igmp_msg_len,
sizeof(struct igmp_mtrace));
return -1;
}
mtracep = (struct igmp_mtrace *)igmp_msg; mtracep = (struct igmp_mtrace *)igmp_msg;
recv_checksum = mtracep->checksum; recv_checksum = mtracep->checksum;