diff --git a/crypto/ex_data.c b/crypto/ex_data.c
index c9ec9d3337..0412f38e9b 100644
--- a/crypto/ex_data.c
+++ b/crypto/ex_data.c
@@ -171,6 +171,8 @@ int ossl_crypto_get_ex_new_index_ex(OSSL_LIB_CTX *ctx, int class_index,
          * "app_data" routines use ex_data index zero.  See RT 3710. */
         if (ip->meth == NULL
             || !sk_EX_CALLBACK_push(ip->meth, NULL)) {
+            sk_EX_CALLBACK_free(ip->meth);
+            ip->meth = NULL;
             ERR_raise(ERR_LIB_CRYPTO, ERR_R_CRYPTO_LIB);
             goto err;
         }