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fix(mdns): Fix potential NULL deref when sending sub-buy

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Closes coverity reported issue: 473829 Dereference null return value
This commit is contained in:
David Cermak
2025-01-24 15:20:11 +01:00
parent 2e7d240abd
commit e7273c46ec
1 changed files with 3 additions and 0 deletions
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3
components/mdns/mdns.c
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@ -2399,6 +2399,9 @@ static void _mdns_send_bye_subtype(mdns_srv_item_t *service, const char *instanc
for (j = 0; j < MDNS_IP_PROTOCOL_MAX; j++) { for (j = 0; j < MDNS_IP_PROTOCOL_MAX; j++) {
if (mdns_is_netif_ready(i, j)) { if (mdns_is_netif_ready(i, j)) {
mdns_tx_packet_t *packet = _mdns_alloc_packet_default((mdns_if_t)i, (mdns_ip_protocol_t)j); mdns_tx_packet_t *packet = _mdns_alloc_packet_default((mdns_if_t)i, (mdns_ip_protocol_t)j);
if (packet == NULL) {
return;
}
packet->flags = MDNS_FLAGS_QR_AUTHORITATIVE; packet->flags = MDNS_FLAGS_QR_AUTHORITATIVE;
if (!_mdns_alloc_answer(&packet->answers, MDNS_TYPE_PTR, service->service, NULL, true, true)) { if (!_mdns_alloc_answer(&packet->answers, MDNS_TYPE_PTR, service->service, NULL, true, true)) {
_mdns_free_tx_packet(packet); _mdns_free_tx_packet(packet);