From 63a65d16acca53622a08861cdde8fe0e79beb522 Mon Sep 17 00:00:00 2001
From: "Dr. Matthias St. Pierre" <Matthias.St.Pierre@ncp-e.com>
Date: Sun, 8 Apr 2018 12:09:10 +0200
Subject: [PATCH] DRBG: fix memory leak on error in rand_drbg_get_entropy()

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5918)
---
 crypto/rand/rand_lib.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/crypto/rand/rand_lib.c b/crypto/rand/rand_lib.c
index 3589e75853..6e98e4ddf8 100644
--- a/crypto/rand/rand_lib.c
+++ b/crypto/rand/rand_lib.c
@@ -229,7 +229,7 @@ size_t rand_drbg_get_entropy(RAND_DRBG *drbg,
              */
             RANDerr(RAND_F_RAND_DRBG_GET_ENTROPY,
                     RAND_R_PREDICTION_RESISTANCE_NOT_SUPPORTED);
-            return 0;
+            goto err;
         }
 
         /* Get entropy by polling system entropy sources. */
@@ -241,6 +241,7 @@ size_t rand_drbg_get_entropy(RAND_DRBG *drbg,
         *pout = rand_pool_detach(pool);
     }
 
+ err:
     rand_pool_free(pool);
     return ret;
 }
-- 
2.25.1