From b3a1badecf7155a795de5239a6ba19b70ec0c6a9 Mon Sep 17 00:00:00 2001
From: Andras Fekete <andras@wolfssl.com>
Date: Mon, 14 Aug 2023 17:02:59 -0400
Subject: [PATCH] Check the return value

---
 wolfcrypt/src/asn.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/wolfcrypt/src/asn.c b/wolfcrypt/src/asn.c
index 336934f9b..eda4ac94a 100644
--- a/wolfcrypt/src/asn.c
+++ b/wolfcrypt/src/asn.c
@@ -31698,9 +31698,12 @@ int StoreECC_DSA_Sig(byte* out, word32* outLen, mp_int* r, mp_int* s)
     }
     if (ret == 0) {
         /* Encode DSA signature into buffer. */
-        SetASN_Items(dsaSigASN, dataASN, dsaSigASN_Length, out);
-        /* Set the actual encoding size. */
-        *outLen = (word32)sz;
+        ret = SetASN_Items(dsaSigASN, dataASN, dsaSigASN_Length, out);
+        if ((ret >= 0) && (ret == sz)) {
+            /* Set the actual encoding size. */
+            *outLen = (word32)sz;
+            ret = 0;
+        }
     }
 
     return ret;