From 64667a55953263a84907636b5edaffc8e037ba99 Mon Sep 17 00:00:00 2001
From: Daniel Pouzzner <douzzer@wolfssl.com>
Date: Wed, 17 Jan 2024 13:16:00 -0600
Subject: [PATCH] src/crl.c: fix "null pointer passed as argument 2" in new
 XMEMCPY() call in WC_RSA_PSS path of DupCRL_Entry(), added in b140f93b17,
 detected by gcc 14.0.0_pre20240107 p15 with sanitizers.

---
 src/crl.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/crl.c b/src/crl.c
index 20b2241ab..a4212949c 100644
--- a/src/crl.c
+++ b/src/crl.c
@@ -778,7 +778,9 @@ static CRL_Entry* DupCRL_Entry(const CRL_Entry* ent, void* heap)
         XMEMCPY(dupl->toBeSigned, ent->toBeSigned, dupl->tbsSz);
         XMEMCPY(dupl->signature, ent->signature, dupl->signatureSz);
     #ifdef WC_RSA_PSS
-        XMEMCPY(dupl->sigParams, ent->sigParams, dupl->sigParamsSz);
+        if (dupl->sigParamsSz > 0) {
+            XMEMCPY(dupl->sigParams, ent->sigParams, dupl->sigParamsSz);
+        }
     #endif
     }
     else {