diff --git a/crypto/x509v3/v3_utl.c b/crypto/x509v3/v3_utl.c
index 05edd85cf47ea277426fde7dab41b1523246fdd8..7dc9a4533efa26a7decc4b3dd3539382fccdf2b2 100644
--- a/crypto/x509v3/v3_utl.c
+++ b/crypto/x509v3/v3_utl.c
@@ -469,6 +469,7 @@ static int append_ia5(STACK_OF(OPENSSL_STRING) **sk, const ASN1_IA5STRING *email
         return 1;
     emtmp = OPENSSL_strdup((char *)email->data);
     if (emtmp == NULL || !sk_OPENSSL_STRING_push(*sk, emtmp)) {
+        OPENSSL_free(emtmp);    /* free on push failure */
         X509_email_free(*sk);
         *sk = NULL;
         return 0;