Don't crash if an unrecognised digest is used with dsa_paramgen_md

[openssl.git] / crypto / asn1 / tasn_new.c

diff --git a/crypto/asn1/tasn_new.c b/crypto/asn1/tasn_new.c
index 7d2964f02307b2013af62614e632dfbd02097500..6ba90260dab3b97a3eb4fe27a9db0d2765a109b6 100644 (file)
--- a/crypto/asn1/tasn_new.c
+++ b/crypto/asn1/tasn_new.c
@@ -63,6 +63,7 @@
 #include <openssl/err.h>
 #include <openssl/asn1t.h>
 #include <string.h>
+#include "asn1_int.h"
 
 static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
                                     int combine);
@@ -100,9 +101,6 @@ static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
     else
         asn1_cb = 0;
 
-    if (!combine)
-        *pval = NULL;
-
 #ifdef CRYPTO_MDEBUG
     if (it->sname)
         CRYPTO_push_info(it->sname);
@@ -161,7 +159,7 @@ static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
         }
         asn1_set_choice_selector(pval, -1, it);
         if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL))
-            goto auxerr;
+            goto auxerr2;
         break;
 
     case ASN1_ITYPE_NDEF_SEQUENCE:
@@ -189,10 +187,10 @@ static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
         for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) {
             pseqval = asn1_get_field_ptr(pval, tt);
             if (!ASN1_template_new(pseqval, tt))
-                goto memerr;
+                goto memerr2;
         }
         if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL))
-            goto auxerr;
+            goto auxerr2;
         break;
     }
 #ifdef CRYPTO_MDEBUG
@@ -201,6 +199,8 @@ static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
 #endif
     return 1;
 
+ memerr2:
+    asn1_item_combine_free(pval, it, combine);
  memerr:
     ASN1err(ASN1_F_ASN1_ITEM_EX_COMBINE_NEW, ERR_R_MALLOC_FAILURE);
 #ifdef CRYPTO_MDEBUG
@@ -209,9 +209,10 @@ static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
 #endif
     return 0;
 
+ auxerr2:
+    asn1_item_combine_free(pval, it, combine);
  auxerr:
     ASN1err(ASN1_F_ASN1_ITEM_EX_COMBINE_NEW, ASN1_R_AUX_ERROR);
-    ASN1_item_ex_free(pval, it);
 #ifdef CRYPTO_MDEBUG
     if (it->sname)
         CRYPTO_pop_info();