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Merge pull request #21227 from maribu/sys/net/nanocoap/fix-nullptr-deref

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sys/net/nanocoap: fix dereferencing a null pointer
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benpicco 2025-02-19 11:38:05 +00:00 committed by GitHub
commit 90a9ddb2c6
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1 changed files with 2 additions and 1 deletions
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sys/net/application_layer/nanocoap/nanocoap.c
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@ -528,7 +528,8 @@ ssize_t coap_handle_req(coap_pkt_t *pkt, uint8_t *resp_buf, unsigned resp_buf_le
if (retval < 0) {
/* handlers were not able to process this, so we reply with a RST,
* unless we got a multicast message */
if (!sock_udp_ep_is_multicast(coap_request_ctx_get_local_udp(ctx))) {
const sock_udp_ep_t *local = coap_request_ctx_get_local_udp(ctx);
if (!local || !sock_udp_ep_is_multicast(local)) {
return coap_build_reply(pkt, COAP_CODE_EMPTY, resp_buf, resp_buf_len, 0);
}
}