3 files changed, 29 insertions, 5 deletions
diff --git a/crypto/pkcs12/p12_add.c b/crypto/pkcs12/p12_add.c
index 6fd4184af5a5..66dcf92ca11e 100644
--- a/crypto/pkcs12/p12_add.c
+++ b/crypto/pkcs12/p12_add.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 1999-2021 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1999-2024 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the Apache License 2.0 (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -78,6 +78,12 @@ STACK_OF(PKCS12_SAFEBAG) *PKCS12_unpack_p7data(PKCS7 *p7)
         ERR_raise(ERR_LIB_PKCS12, PKCS12_R_CONTENT_TYPE_NOT_DATA);
         return NULL;
     }
+
+    if (p7->d.data == NULL) {
+        ERR_raise(ERR_LIB_PKCS12, PKCS12_R_DECODE_ERROR);
+        return NULL;
+    }
+
     return ASN1_item_unpack(p7->d.data, ASN1_ITEM_rptr(PKCS12_SAFEBAGS));
 }
 
@@ -150,6 +156,12 @@ STACK_OF(PKCS12_SAFEBAG) *PKCS12_unpack_p7encdata(PKCS7 *p7, const char *pass,
 {
     if (!PKCS7_type_is_encrypted(p7))
         return NULL;
+
+    if (p7->d.encrypted == NULL) {
+        ERR_raise(ERR_LIB_PKCS12, PKCS12_R_DECODE_ERROR);
+        return NULL;
+    }
+
     return PKCS12_item_decrypt_d2i_ex(p7->d.encrypted->enc_data->algorithm,
                                    ASN1_ITEM_rptr(PKCS12_SAFEBAGS),
                                    pass, passlen,
@@ -188,6 +200,12 @@ STACK_OF(PKCS7) *PKCS12_unpack_authsafes(const PKCS12 *p12)
         ERR_raise(ERR_LIB_PKCS12, PKCS12_R_CONTENT_TYPE_NOT_DATA);
         return NULL;
     }
+
+    if (p12->authsafes->d.data == NULL) {
+        ERR_raise(ERR_LIB_PKCS12, PKCS12_R_DECODE_ERROR);
+        return NULL;
+    }
+
     p7s = ASN1_item_unpack(p12->authsafes->d.data,
                            ASN1_ITEM_rptr(PKCS12_AUTHSAFES));
     if (p7s != NULL) {
diff --git a/crypto/pkcs12/p12_mutl.c b/crypto/pkcs12/p12_mutl.c
index 67a885a45f89..f8a6d33ddfae 100644
--- a/crypto/pkcs12/p12_mutl.c
+++ b/crypto/pkcs12/p12_mutl.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 1999-2023 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1999-2024 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the Apache License 2.0 (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -98,6 +98,11 @@ static int pkcs12_gen_mac(PKCS12 *p12, const char *pass, int passlen,
         return 0;
     }
 
+    if (p12->authsafes->d.data == NULL) {
+        ERR_raise(ERR_LIB_PKCS12, PKCS12_R_DECODE_ERROR);
+        return 0;
+    }
+
     salt = p12->mac->salt->data;
     saltlen = p12->mac->salt->length;
     if (p12->mac->iter == NULL)
diff --git a/crypto/pkcs12/p12_npas.c b/crypto/pkcs12/p12_npas.c
index 62230bc6187f..dfcfcf6ae677 100644
--- a/crypto/pkcs12/p12_npas.c
+++ b/crypto/pkcs12/p12_npas.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 1999-2020 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1999-2024 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the Apache License 2.0 (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -77,8 +77,9 @@ static int newpass_p12(PKCS12 *p12, const char *oldpass, const char *newpass)
             bags = PKCS12_unpack_p7data(p7);
         } else if (bagnid == NID_pkcs7_encrypted) {
             bags = PKCS12_unpack_p7encdata(p7, oldpass, -1);
-            if (!alg_get(p7->d.encrypted->enc_data->algorithm,
-                         &pbe_nid, &pbe_iter, &pbe_saltlen))
+            if (p7->d.encrypted == NULL
+                    || !alg_get(p7->d.encrypted->enc_data->algorithm,
+                                &pbe_nid, &pbe_iter, &pbe_saltlen))
                 goto err;
         } else {
             continue;