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-rw-r--r--src/rfid_proto_mifare_classic.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/rfid_proto_mifare_classic.c b/src/rfid_proto_mifare_classic.c
index 10de288..99386a1 100644
--- a/src/rfid_proto_mifare_classic.c
+++ b/src/rfid_proto_mifare_classic.c
@@ -64,6 +64,9 @@ mfcl_read(struct rfid_protocol_handle *ph, unsigned int page,
if (ret < 0)
return ret;
+ if (real_rx_len == 1 && *rx_buf == 0x04)
+ return -EPERM;
+
if (real_rx_len < *rx_len)
*rx_len = real_rx_len;
personal git repositories of Harald Welte. Your mileage may vary