Common Weakness Enumeration
CWE-476
AllowedNULL Pointer Dereference
Abstraction: Base · Status: Stable
The product dereferences a pointer that it expects to be valid but is NULL.
6310 vulnerabilities reference this CWE, most recent first.
CVE-2021-29518 (GCVE-0-2021-29518)
Vulnerability from cvelistv5 – Published: 2021-05-14 19:36 – Updated: 2024-08-03 22:11
VLAI
EPSS
VEX
Title
Session operations in eager mode lead to null pointer dereferences
Summary
TensorFlow is an end-to-end open source platform for machine learning. In eager mode (default in TF 2.0 and later), session operations are invalid. However, users could still call the raw ops associated with them and trigger a null pointer dereference. The implementation(https://github.com/tensorflow/tensorflow/blob/eebb96c2830d48597d055d247c0e9aebaea94cd5/tensorflow/core/kernels/session_ops.cc#L104) dereferences the session state pointer without checking if it is valid. Thus, in eager mode, `ctx->session_state()` is nullptr and the call of the member function is undefined behavior. The fix will be included in TensorFlow 2.5.0. We will also cherrypick this commit on TensorFlow 2.4.2, TensorFlow 2.3.3, TensorFlow 2.2.3 and TensorFlow 2.1.4, as these are also affected and still in supported range.
Severity
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/tensorflow/tensorflow/security… | x_refsource_CONFIRM |
| https://github.com/tensorflow/tensorflow/commit/f… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| tensorflow | tensorflow |
Affected:
< 2.1.4
Affected: >= 2.2.0, < 2.2.3 Affected: >= 2.3.0, < 2.3.3 Affected: >= 2.4.0, < 2.4.2 |
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CVE-2021-29516 (GCVE-0-2021-29516)
Vulnerability from cvelistv5 – Published: 2021-05-14 19:36 – Updated: 2024-08-03 22:11
VLAI
EPSS
VEX
Title
Null pointer dereference via invalid Ragged Tensors
Summary
TensorFlow is an end-to-end open source platform for machine learning. Calling `tf.raw_ops.RaggedTensorToVariant` with arguments specifying an invalid ragged tensor results in a null pointer dereference. The implementation of `RaggedTensorToVariant` operations(https://github.com/tensorflow/tensorflow/blob/904b3926ed1c6c70380d5313d282d248a776baa1/tensorflow/core/kernels/ragged_tensor_to_variant_op.cc#L39-L40) does not validate that the ragged tensor argument is non-empty. Since `batched_ragged` contains no elements, `batched_ragged.splits` is a null vector, thus `batched_ragged.splits(0)` will result in dereferencing `nullptr`. The fix will be included in TensorFlow 2.5.0. We will also cherrypick this commit on TensorFlow 2.4.2, TensorFlow 2.3.3, TensorFlow 2.2.3 and TensorFlow 2.1.4, as these are also affected and still in supported range.
Severity
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/tensorflow/tensorflow/security… | x_refsource_CONFIRM |
| https://github.com/tensorflow/tensorflow/commit/b… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| tensorflow | tensorflow |
Affected:
< 2.1.4
Affected: >= 2.2.0, < 2.2.3 Affected: >= 2.3.0, < 2.3.3 Affected: >= 2.4.0, < 2.4.2 |
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CVE-2021-29515 (GCVE-0-2021-29515)
Vulnerability from cvelistv5 – Published: 2021-05-14 19:36 – Updated: 2024-08-03 22:11
VLAI
EPSS
VEX
Title
Reference binding to null pointer in `MatrixDiag*` ops
Summary
TensorFlow is an end-to-end open source platform for machine learning. The implementation of `MatrixDiag*` operations(https://github.com/tensorflow/tensorflow/blob/4c4f420e68f1cfaf8f4b6e8e3eb857e9e4c3ff33/tensorflow/core/kernels/linalg/matrix_diag_op.cc#L195-L197) does not validate that the tensor arguments are non-empty. The fix will be included in TensorFlow 2.5.0. We will also cherrypick this commit on TensorFlow 2.4.2, TensorFlow 2.3.3, TensorFlow 2.2.3 and TensorFlow 2.1.4, as these are also affected and still in supported range.
Severity
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/tensorflow/tensorflow/security… | x_refsource_CONFIRM |
| https://github.com/tensorflow/tensorflow/commit/a… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| tensorflow | tensorflow |
Affected:
< 2.1.4
Affected: >= 2.2.0, < 2.2.3 Affected: >= 2.3.0, < 2.3.3 Affected: >= 2.4.0, < 2.4.2 |
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CVE-2021-29513 (GCVE-0-2021-29513)
Vulnerability from cvelistv5 – Published: 2021-05-14 19:36 – Updated: 2024-08-03 22:11
VLAI
EPSS
VEX
Title
Type confusion during tensor casts lead to dereferencing null pointers
Summary
TensorFlow is an end-to-end open source platform for machine learning. Calling TF operations with tensors of non-numeric types when the operations expect numeric tensors result in null pointer dereferences. The conversion from Python array to C++ array(https://github.com/tensorflow/tensorflow/blob/ff70c47a396ef1e3cb73c90513da4f5cb71bebba/tensorflow/python/lib/core/ndarray_tensor.cc#L113-L169) is vulnerable to a type confusion. The fix will be included in TensorFlow 2.5.0. We will also cherrypick this commit on TensorFlow 2.4.2, TensorFlow 2.3.3, TensorFlow 2.2.3 and TensorFlow 2.1.4, as these are also affected and still in supported range.
Severity
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/tensorflow/tensorflow/security… | x_refsource_CONFIRM |
| https://github.com/tensorflow/tensorflow/commit/0… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| tensorflow | tensorflow |
Affected:
< 2.1.4
Affected: >= 2.2.0, < 2.2.3 Affected: >= 2.3.0, < 2.3.3 Affected: >= 2.4.0, < 2.4.2 |
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CVE-2021-28601 (GCVE-0-2021-28601)
Vulnerability from cvelistv5 – Published: 2021-08-24 17:57 – Updated: 2025-04-23 19:34
VLAI
EPSS
VEX
Title
Adobe After Effects NULL Pointer Dereference vulnerability
Summary
Adobe After Effects version 18.2 (and earlier) is affected by a Null pointer dereference vulnerability when parsing a specially crafted file. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference (CWE-476)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/after_e… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | After Effects |
Affected:
unspecified , ≤ 18.2
(custom)
Affected: unspecified , ≤ None (custom) |
Date Public
2021-06-08 00:00
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CVE-2021-28166 (GCVE-0-2021-28166)
Vulnerability from cvelistv5 – Published: 2021-04-07 18:50 – Updated: 2024-08-03 21:40
VLAI
EPSS
VEX
Summary
In Eclipse Mosquitto version 2.0.0 to 2.0.9, if an authenticated client that had connected with MQTT v5 sent a crafted CONNACK message to the broker, a NULL pointer dereference would occur.
Severity
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://bugs.eclipse.org/bugs/show_bug.cgi?id=572608 | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The Eclipse Foundation | Eclipse Mosquitto |
Affected:
2.0 , < unspecified
(custom)
Affected: unspecified , ≤ 2.0.9 (custom) |
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CVE-2021-27632 (GCVE-0-2021-27632)
Vulnerability from cvelistv5 – Published: 2021-06-09 00:00 – Updated: 2024-08-03 21:26
VLAI
EPSS
VEX
Summary
SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server), versions - KRNL32NUC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC - 8.04,7.22,7.22EXT,7.49,7.53,7.73, KERNEL - 7.22,8.04,7.49,7.53,7.73, allows an unauthenticated attacker without specific knowledge of the system to send a specially crafted packet over a network which will trigger an internal error in the system due to improper input validation in method EnqConvUniToSrvReq() causing the system to crash and rendering it unavailable. In this attack, no data in the system can be viewed or modified.
Severity
7.5 (High)
CWE
- CWE-476 - Improper Input Validation (CWE-476)
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SAP SE | SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server) |
Affected:
< KRNL32NUC - 7.22
Affected: < 7.22EXT Affected: < KRNL64NUC - 7.22 Affected: < 7.49 Affected: < KRNL64UC - 8.04 Affected: < 7.22 Affected: < 7.53 Affected: < 7.73 Affected: < KERNEL - 7.22 Affected: < 8.04 |
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CVE-2021-27631 (GCVE-0-2021-27631)
Vulnerability from cvelistv5 – Published: 2021-06-09 00:00 – Updated: 2024-08-03 21:26
VLAI
EPSS
VEX
Summary
SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server), versions - KRNL32NUC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC - 8.04,7.22,7.22EXT,7.49,7.53,7.73, KERNEL - 7.22,8.04,7.49,7.53,7.73, allows an unauthenticated attacker without specific knowledge of the system to send a specially crafted packet over a network which will trigger an internal error in the system due to improper input validation in method EnqConvUniToSrvReq() causing the system to crash and rendering it unavailable. In this attack, no data in the system can be viewed or modified.
Severity
7.5 (High)
CWE
- CWE-476 - Improper Input Validation (CWE-476)
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SAP SE | SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server) |
Affected:
< KRNL32NUC - 7.22
Affected: < 7.22EXT Affected: < KRNL64NUC - 7.22 Affected: < 7.49 Affected: < KRNL64UC - 8.04 Affected: < 7.22 Affected: < 7.53 Affected: < 7.73 Affected: < KERNEL - 7.22 Affected: < 8.04 |
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CVE-2021-27630 (GCVE-0-2021-27630)
Vulnerability from cvelistv5 – Published: 2021-06-09 00:00 – Updated: 2024-08-03 21:26
VLAI
EPSS
VEX
Summary
SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server), versions - KRNL32NUC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC - 8.04,7.22,7.22EXT,7.49,7.53,7.73, KERNEL - 7.22,8.04,7.49,7.53,7.73, allows an unauthenticated attacker without specific knowledge of the system to send a specially crafted packet over a network which will trigger an internal error in the system due to improper input validation in method EnqConvUniToSrvReq() causing the system to crash and rendering it unavailable. In this attack, no data in the system can be viewed or modified.
Severity
7.5 (High)
CWE
- CWE-476 - Improper Input Validation (CWE-476)
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SAP SE | SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server) |
Affected:
< KRNL32NUC - 7.22
Affected: < 7.22EXT Affected: < KRNL64NUC - 7.22 Affected: < 7.49 Affected: < KRNL64UC - 8.04 Affected: < 7.22 Affected: < 7.53 Affected: < 7.73 Affected: < KERNEL - 7.22 Affected: < 8.04 |
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CVE-2021-27607 (GCVE-0-2021-27607)
Vulnerability from cvelistv5 – Published: 2021-06-09 00:00 – Updated: 2024-08-03 21:26
VLAI
EPSS
VEX
Summary
SAP NetWeaver ABAP Server and ABAP Platform (Dispatcher), versions - KRNL32NUC - 7.22,7.22EXT, KRNL32UC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC - 8.04,7.22,7.22EXT,7.49,7.53,7.73, KERNEL - 7.22,8.04,7.49,7.53,7.73,7.77,7.81,7.82,7.83, allows an unauthenticated attacker without specific knowledge of the system to send a specially crafted packet over a network which will trigger an internal error in the system due to improper input validation in method ThSncIn() causing the system to crash and rendering it unavailable. In this attack, no data in the system can be viewed or modified.
Severity
7.5 (High)
CWE
- CWE-476 - Improper Input Validation (CWE-476)
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SAP SE | SAP NetWeaver ABAP Server and ABAP Platform (Dispatcher) |
Affected:
< KRNL32NUC - 7.22
Affected: < 7.22EXT Affected: < KRNL32UC - 7.22 Affected: < KRNL64NUC - 7.22 Affected: < 7.49 Affected: < KRNL64UC - 8.04 Affected: < 7.22 Affected: < 7.53 Affected: < 7.73 Affected: < KERNEL - 7.22 Affected: < 8.04 Affected: < 7.77 Affected: < 7.81 Affected: < 7.82 Affected: < 7.83 |
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Mitigation MIT-56
Implementation
For any pointers that could have been modified or provided from a function that can return NULL, check the pointer for NULL before use. When working with a multithreaded or otherwise asynchronous environment, ensure that proper locking APIs are used to lock before the check, and unlock when it has finished [REF-1484].
Mitigation
Requirements
Select a programming language that is not susceptible to these issues.
Mitigation
Implementation
Check the results of all functions that return a value and verify that the value is non-null before acting upon it.
Mitigation
Architecture and Design
Identify all variables and data stores that receive information from external sources, and apply input validation to make sure that they are only initialized to expected values.
Mitigation
Implementation
Explicitly initialize all variables and other data stores, either during declaration or just before the first usage.
No CAPEC attack patterns related to this CWE.