From b251f0ea26b8857ba81cb87835de10f62b0e68cd Mon Sep 17 00:00:00 2001
From: samuel40791765 <sachiang@amazon.com>
Date: Fri, 13 Sep 2024 20:36:20 +0000
Subject: [PATCH] add null check

---
 crypto/pem/pem_pkey.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/crypto/pem/pem_pkey.c b/crypto/pem/pem_pkey.c
index 59ce84d916f..6bbbc88c782 100644
--- a/crypto/pem/pem_pkey.c
+++ b/crypto/pem/pem_pkey.c
@@ -269,6 +269,11 @@ int PEM_write_bio_PrivateKey_traditional(BIO *bp, EVP_PKEY *x,
                                          const EVP_CIPHER *enc,
                                          unsigned char *kstr, int klen,
                                          pem_password_cb *cb, void *u) {
+  if (bp == NULL || x == NULL || x->ameth == NULL ||
+      x->ameth->pem_str == NULL) {
+    OPENSSL_PUT_ERROR(PEM, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
   char pem_str[80];
   BIO_snprintf(pem_str, 80, "%s PRIVATE KEY", x->ameth->pem_str);
   return PEM_ASN1_write_bio(i2d_PrivateKey_void, pem_str, bp, x, enc, kstr,