diff -up openssl-1.0.1e/crypto/rsa/rsa_ameth.c.pss-check openssl-1.0.1e/crypto/rsa/rsa_ameth.c
--- openssl-1.0.1e/crypto/rsa/rsa_ameth.c.pss-check 2013-02-11 16:26:04.000000000 +0100
+++ openssl-1.0.1e/crypto/rsa/rsa_ameth.c 2015-12-04 09:03:18.300660817 +0100
@@ -287,7 +287,7 @@ static RSA_PSS_PARAMS *rsa_pss_decode(co
{
ASN1_TYPE *param = pss->maskGenAlgorithm->parameter;
if (OBJ_obj2nid(pss->maskGenAlgorithm->algorithm) == NID_mgf1
- && param->type == V_ASN1_SEQUENCE)
+ && param && param->type == V_ASN1_SEQUENCE)
{
p = param->value.sequence->data;
plen = param->value.sequence->length;