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Code Issues Activity

NFC: Fix read crash with unexpectedly large MFC AUTH(0) response (#4265)

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This was noticeable with Chameleon Ultra NTAG emulation

Co-authored-by: hedger <hedger@users.noreply.github.com>
This commit is contained in:
WillyJL
2025-09-23 15:43:45 +02:00
committed by GitHub
parent d19ad60c1a
commit 7380eacf0e
1 changed files with 6 additions and 0 deletions
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6
lib/nfc/protocols/iso14443_3a/iso14443_3a_poller_i.c
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@@ -42,7 +42,13 @@ static Iso14443_3aError iso14443_3a_poller_standard_frame_exchange(
break; break;
} }
if(bit_buffer_get_capacity_bytes(rx_buffer) <
bit_buffer_get_size_bytes(instance->rx_buffer)) {
ret = Iso14443_3aErrorBufferOverflow;
break;
}
bit_buffer_copy(rx_buffer, instance->rx_buffer); bit_buffer_copy(rx_buffer, instance->rx_buffer);
if(!iso14443_crc_check(Iso14443CrcTypeA, instance->rx_buffer)) { if(!iso14443_crc_check(Iso14443CrcTypeA, instance->rx_buffer)) {
ret = Iso14443_3aErrorWrongCrc; ret = Iso14443_3aErrorWrongCrc;
break; break;