From 545ba58cc0f0ff330d92bf52133e9c3ad364a75e Mon Sep 17 00:00:00 2001
From: Daniel Pouzzner <douzzer@wolfssl.com>
Date: Thu, 28 Jul 2022 09:27:49 -0500
Subject: [PATCH] sp_int.c sp_div(): add missing (err == MP_OKAY) clause to fix
 null ptr deref.

---
 wolfcrypt/src/sp_int.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wolfcrypt/src/sp_int.c b/wolfcrypt/src/sp_int.c
index 763ec1f8f..ad74b1dc2 100644
--- a/wolfcrypt/src/sp_int.c
+++ b/wolfcrypt/src/sp_int.c
@@ -7121,7 +7121,7 @@ int sp_div(sp_int* a, sp_int* d, sp_int* r, sp_int* rem)
         }
     }
 
-    if (!done) {
+    if ((!done) && (err == MP_OKAY)) {
 #if (defined(WOLFSSL_SMALL_STACK) || defined(SP_ALLOC)) && \
     !defined(WOLFSSL_SP_NO_MALLOC)
         int cnt = 4;