asn1_item_embed_new(): don't free an embedded item

An embedded item wasn't allocated separately on the heap, so don't
free it as if it was.

Issue discovered by Pavel Kopyl

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4571)

diff --git a/crypto/asn1/tasn_new.c b/crypto/asn1/tasn_new.c
index 54f459d1ed9cbf62eca1069a683e6d45c981f963..1e21da216bc0a987a58f5df19e5669cb300d26cc 100644 (file)
--- a/crypto/asn1/tasn_new.c
+++ b/crypto/asn1/tasn_new.c
@@ -199,7 +199,8 @@ static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
     return 1;
 
  memerr2:
-    ASN1_item_ex_free(pval, it);
+    if (!combine)
+        ASN1_item_ex_free(pval, it);
  memerr:
     ASN1err(ASN1_F_ASN1_ITEM_EX_COMBINE_NEW, ERR_R_MALLOC_FAILURE);
 #ifdef CRYPTO_MDEBUG
@@ -209,7 +210,8 @@ static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
     return 0;
 
  auxerr2:
-    ASN1_item_ex_free(pval, it);
+    if (!combine)
+        ASN1_item_ex_free(pval, it);
  auxerr:
     ASN1err(ASN1_F_ASN1_ITEM_EX_COMBINE_NEW, ASN1_R_AUX_ERROR);
 #ifdef CRYPTO_MDEBUG