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fix #3239: discard poorly formed packets

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rppicomidi 2025-09-06 06:58:35 -07:00
parent 8304587d77
commit 0263cfc01a
1 changed files with 10 additions and 0 deletions
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10
src/class/midi/midi_host.c
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@ -575,6 +575,11 @@ uint32_t tuh_midi_stream_read(uint8_t idx, uint8_t *p_cable_num, uint8_t *p_buff
}
}
}
else {
// bad packet discard
nread = tu_edpt_stream_read(p_midi->daddr, &p_midi->ep_stream.rx, p_midi->stream_read.buffer, 4);
continue;
}
} else if (status < MIDI_STATUS_SYSEX_START) {
// then it is a channel message either three bytes or two
uint8_t fake_cin = (status & 0xf0) >> 4;
@ -617,6 +622,11 @@ uint32_t tuh_midi_stream_read(uint8_t idx, uint8_t *p_cable_num, uint8_t *p_buff
bytes_to_add_to_stream = 1;
}
}
else {
// bad packet discard
nread = tu_edpt_stream_read(p_midi->daddr, &p_midi->ep_stream.rx, p_midi->stream_read.buffer, 4);
continue;
}
for (uint8_t i = 1; i <= bytes_to_add_to_stream; i++) {
*p_buffer++ = p_midi->stream_read.buffer[i];