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gnrc_lorawan: drop frame if port exceeds max app port

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This commit is contained in:
Jose Alamos 2021-03-01 15:44:17 +01:00
parent 7cf5530cae
commit dca0b366ac
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1 changed files with 5 additions and 0 deletions
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5
sys/net/gnrc/link_layer/lorawan/gnrc_lorawan_mcps.c
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@ -118,6 +118,11 @@ int gnrc_lorawan_parse_dl(gnrc_lorawan_t *mac, uint8_t *buf, size_t len,
return -1; return -1;
} }
if (pkt->port > LORAMAC_PORT_MAX) {
DEBUG("gnrc_lorawan: packet with port > 223. Drop\n");
return -1;
}
if (buf < p_mic) { if (buf < p_mic) {
pkt->enc_payload.iol_base = buf; pkt->enc_payload.iol_base = buf;
pkt->enc_payload.iol_len = p_mic - buf; pkt->enc_payload.iol_len = p_mic - buf;