espressif/esp-protocols
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fix(mdns): Fixed potential out-of-bound interface error

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invalid mdns_if was handled for enabling/announcing pcbs,
but not for the consequent browsing

Closes coverity isssue: 470162 Out-of-bounds access
This commit is contained in:
David Cermak
2025-01-10 11:41:02 +01:00
parent 8f8516cc3f
commit 24f55ce9b4
1 changed files with 4 additions and 3 deletions
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5
components/mdns/mdns.c
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@ -4479,10 +4479,11 @@ void mdns_preset_if_handle_system_event(void *arg, esp_event_base_t event_base,
case IP_EVENT_GOT_IP6: {
ip_event_got_ip6_t *event = (ip_event_got_ip6_t *) event_data;
mdns_if_t mdns_if = _mdns_get_if_from_esp_netif(event->esp_netif);
if (mdns_if < MDNS_MAX_INTERFACES) {
if (mdns_if >= MDNS_MAX_INTERFACES) {
return;
}
post_mdns_enable_pcb(mdns_if, MDNS_IP_PROTOCOL_V6);
post_mdns_announce_pcb(mdns_if, MDNS_IP_PROTOCOL_V4);
}
mdns_browse_t *browse = _mdns_server->browse;
while (browse) {
_mdns_browse_send(browse, mdns_if);