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fix nfc oob write #435

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merged 2 commits into from
Oct 2, 2023
Merged

fix nfc oob write #435

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79cfbb7
fix nfc oob write
jmartins-ledger Sep 20, 2023
666b901
fix code style
jmartins-ledger Sep 20, 2023
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7 changes: 5 additions & 2 deletions src/os_io_seproxyhal.c
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Original file line number Diff line number Diff line change
Expand Up @@ -246,10 +246,13 @@ void io_seproxyhal_handle_capdu_event(void)
#ifdef HAVE_NFC
void io_seproxyhal_handle_nfc_recv_event(void)
{
size_t max = MIN(sizeof(G_io_apdu_buffer), sizeof(G_io_seproxyhal_spi_buffer) - 3);
size_t size = U2BE(G_io_seproxyhal_spi_buffer, 1);

G_io_app.apdu_media = IO_APDU_MEDIA_NFC;
G_io_app.apdu_state = APDU_NFC;
G_io_app.apdu_length = ((G_io_seproxyhal_spi_buffer[1] << 8) & 0xFF00)
| (G_io_seproxyhal_spi_buffer[2] & 0x00FF);
G_io_app.apdu_length = MIN(size, max);

memcpy(G_io_apdu_buffer, &G_io_seproxyhal_spi_buffer[3], G_io_app.apdu_length);
}
#endif
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