From 57729b604cc55f1f5af46a2c7e1a3f5c54198c98 Mon Sep 17 00:00:00 2001 From: mwalker33 <51802811+mwalker33@users.noreply.github.com> Date: Sat, 19 Jun 2021 13:12:10 +1000 Subject: [PATCH] Update cmdhfmfdes.c realloc update --- client/src/cmdhfmfdes.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/client/src/cmdhfmfdes.c b/client/src/cmdhfmfdes.c index 85748afd9..e2e315727 100644 --- a/client/src/cmdhfmfdes.c +++ b/client/src/cmdhfmfdes.c @@ -984,7 +984,14 @@ static int handler_desfire_auth(mfdes_authinput_t *payload, mfdes_auth_res_t *rp // Part 4 // tag->session_key = &default_key; - tag->session_key = realloc (tag->session_key,sizeof(struct desfire_key)); + struct desfire_key *p = realloc (tag->session_key,sizeof(struct desfire_key)); + if (!p) { + PrintAndLogEx(FAILED, "Cannot allocate memory for session keys"); + free(tag->session_key); + return PM3_EMALLOC; + } + tag->session_key = p; + memset (tag->session_key, 0x00, sizeof(struct desfire_key)); Desfire_session_key_new(RndA, RndB, key, tag->session_key);