1 files changed, 9 insertions, 4 deletions

diff --git a/src/lib/libcrypto/pkcs7/pk7_doit.c b/src/lib/libcrypto/pkcs7/pk7_doit.c
index 35c7dcd0b3..b78e22819c 100644
--- a/src/lib/libcrypto/pkcs7/pk7_doit.c
+++ b/src/lib/libcrypto/pkcs7/pk7_doit.c
@@ -257,10 +257,15 @@ BIO *PKCS7_dataInit(PKCS7 *p7, BIO *bio)
                         bio=BIO_new(BIO_s_null());
                 else
                         {
-                        ASN1_OCTET_STRING *os;
-                        os = PKCS7_get_octet_string(p7->d.sign->contents);
-                        if (os && os->length > 0)
-                                bio = BIO_new_mem_buf(os->data, os->length);
+                        if (PKCS7_type_is_signed(p7))
+                                {
+                                ASN1_OCTET_STRING *os;
+                                os = PKCS7_get_octet_string(
+                                                        p7->d.sign->contents);
+                                if (os && os->length > 0)
+                                        bio = BIO_new_mem_buf(os->data,
+                                                                os->length);
+                                }
                         if(bio == NULL)
                                 {
                                 bio=BIO_new(BIO_s_mem());