From fb9e036d5bbf4aad99930b92a388fe306560a7a5 Mon Sep 17 00:00:00 2001
From: Kareem <kareem@wolfssl.com>
Date: Thu, 6 Jul 2023 14:47:18 -0700
Subject: [PATCH] Add NULL check in TFM's fp_forcezero.

---
 wolfcrypt/src/tfm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/wolfcrypt/src/tfm.c b/wolfcrypt/src/tfm.c
index 4c1fa9aac..b4a224a05 100644
--- a/wolfcrypt/src/tfm.c
+++ b/wolfcrypt/src/tfm.c
@@ -4398,6 +4398,9 @@ void fp_clear(fp_int *a)
 
 void fp_forcezero (mp_int * a)
 {
+    if (a == NULL)
+      return;
+
     int size;
     a->used = 0;
     a->sign = FP_ZPOS;