From 8c4ad8d573433b2bc4fcc08ef3f87338220edd49 Mon Sep 17 00:00:00 2001
From: Kareem <kareem@wolfssl.com>
Date: Thu, 4 Jun 2026 16:40:51 -0700
Subject: [PATCH] Confirm rng pointer is not NULL before dereferencing it in
 wc_rng_new_ex. Fixes F-3979.

---
 wolfcrypt/src/random.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/wolfcrypt/src/random.c b/wolfcrypt/src/random.c
index 8635354550..a75d3400e7 100644
--- a/wolfcrypt/src/random.c
+++ b/wolfcrypt/src/random.c
@@ -2175,6 +2175,10 @@ int wc_rng_new_ex(WC_RNG **rng, byte* nonce, word32 nonceSz,
 {
     int ret;
 
+    if (rng == NULL) {
+        return BAD_FUNC_ARG;
+    }
+
     *rng = (WC_RNG*)XMALLOC(sizeof(WC_RNG), heap, DYNAMIC_TYPE_RNG);
     if (*rng == NULL) {
         return MEMORY_E;