pkcs11: parameter checking for 'get_mechanism_list'

fixes #409
OpenSC · Mar 29, 2015 · c019a62 · c019a62
1 parent 435291f
commit c019a62
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/pkcs11/mechanism.c b/src/pkcs11/mechanism.c
@@ -83,6 +83,9 @@ sc_pkcs11_get_mechanism_list(struct sc_pkcs11_card *p11card,
 	unsigned int n, count = 0;
 	int rv;
 
+	if (!p11card)
+		return CKR_TOKEN_NOT_PRESENT;
+
 	for (n = 0; n < p11card->nmechanisms; n++) {
 		if (!(mt = p11card->mechanisms[n]))
 			continue;