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Fix pre-encoded data buffer overflow

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This commit is contained in:
sekigon-gonnoc 2024-08-24 18:53:51 +09:00
parent fe3b1e2243
commit 2c19e5772d
1 changed files with 2 additions and 1 deletions
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3
src/pio_usb.c
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@ -458,12 +458,13 @@ uint8_t __no_inline_not_in_flash_func(pio_usb_ll_encode_tx_data)(
encoded_data[byte_idx] |= PIO_USB_TX_ENCODED_DATA_COMP;
bit_idx++;
// terminate buffers with K
do {
byte_idx = bit_idx >> 2;
encoded_data[byte_idx] <<= 2;
encoded_data[byte_idx] |= PIO_USB_TX_ENCODED_DATA_K;
bit_idx++;
} while (bit_idx & 0x07);
} while (bit_idx & 0x03);
byte_idx = bit_idx >> 2;
return byte_idx;