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-rw-r--r--src/sim/reader.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/sim/reader.c b/src/sim/reader.c
index 160f1758..e7169b5a 100644
--- a/src/sim/reader.c
+++ b/src/sim/reader.c
@@ -58,6 +58,9 @@ static int transceive_apdu_t0(struct osim_card_hdl *st, struct msgb *amsg)
uint16_t sw;
int rc, num_resp = 0;
+ if (!tmsg)
+ return -ENOMEM;
+
/* create TPDU header from APDU header */
tpduh = (struct osim_apdu_cmd_hdr *) msgb_put(tmsg, sizeof(*tpduh));
memcpy(tpduh, msgb_apdu_h(amsg), sizeof(*tpduh));