Common Weakness Enumeration

CWE-476

Allowed

NULL Pointer Dereference

Abstraction: Base · Status: Stable

API response cwe.mitre.org

The product dereferences a pointer that it expects to be valid but is NULL.

6349 vulnerabilities reference this CWE, most recent first.

CVE-2022-43972 (GCVE-0-2022-43972)

Vulnerability from cvelistv5 – Published: 2023-01-09 00:00 – Updated: 2025-04-09 14:22
VLAI
Title
Null pointer dereference in Linksys WRT54GL
Summary
A null pointer dereference vulnerability exists in Linksys WRT54GL Wireless-G Broadband Router with firmware <= 4.30.18.006. A null pointer dereference in the soap_action function within the upnp binary can be triggered by an unauthenticated attacker via a malicious POST request invoking the AddPortMapping action.
Severity
6.5 (Medium)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
Linksys WRT54GL Wireless-G Broadband Router Affected: Firmware , ≤ 4.30.18.006 (custom)
Create a notification for this product.
Credits
Jessie Chick of Trellix ARC
Show details on NVD website
To clipboard 

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CVE-2022-43603 (GCVE-0-2022-43603)

Vulnerability from cvelistv5 – Published: 2022-12-23 23:03 – Updated: 2025-04-14 18:10
VLAI
Summary
A denial of service vulnerability exists in the ZfileOutput::close() functionality of OpenImageIO Project OpenImageIO v2.4.4.2. A specially crafted ImageOutput Object can lead to denial of service. An attacker can provide a malicious file to trigger this vulnerability.
Severity
5.9 (Medium)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2022-43595 (GCVE-0-2022-43595)

Vulnerability from cvelistv5 – Published: 2022-12-23 23:03 – Updated: 2025-04-14 18:32
VLAI
Summary
Multiple denial of service vulnerabilities exist in the image output closing functionality of OpenImageIO Project OpenImageIO v2.4.4.2. Specially crafted ImageOutput Objects can lead to multiple null pointer dereferences. An attacker can provide malicious multiple inputs to trigger these vulnerabilities.This vulnerability applies to writing .fits files.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2022-43594 (GCVE-0-2022-43594)

Vulnerability from cvelistv5 – Published: 2022-12-23 23:03 – Updated: 2025-02-13 16:33
VLAI
Summary
Multiple denial of service vulnerabilities exist in the image output closing functionality of OpenImageIO Project OpenImageIO v2.4.4.2. Specially crafted ImageOutput Objects can lead to multiple null pointer dereferences. An attacker can provide malicious multiple inputs to trigger these vulnerabilities.This vulnerability applies to writing .bmp files.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2022-43593 (GCVE-0-2022-43593)

Vulnerability from cvelistv5 – Published: 2022-12-23 23:03 – Updated: 2025-04-14 18:34
VLAI
Summary
A denial of service vulnerability exists in the DPXOutput::close() functionality of OpenImageIO Project OpenImageIO v2.4.4.2. A specially crafted ImageOutput Object can lead to null pointer dereference. An attacker can provide malicious input to trigger this vulnerability.
Severity
5.9 (Medium)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2022-43590 (GCVE-0-2022-43590)

Vulnerability from cvelistv5 – Published: 2022-11-28 10:20 – Updated: 2025-04-15 18:39
VLAI
Summary
A null pointer dereference vulnerability exists in the handle_ioctl_0x830a0_systembuffer functionality of Callback technologies CBFS Filter 20.0.8317. A specially crafted I/O request packet (IRP) can lead to denial of service. An attacker can issue an ioctl to trigger this vulnerability.
Severity
6.2 (Medium)
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2022-43589 (GCVE-0-2022-43589)

Vulnerability from cvelistv5 – Published: 2022-11-28 10:20 – Updated: 2025-04-15 18:39
VLAI
Summary
A null pointer dereference vulnerability exists in the handle_ioctl_8314C functionality of Callback technologies CBFS Filter 20.0.8317. A specially crafted I/O request packet (IRP) can lead to denial of service. An attacker can issue an ioctl to trigger this vulnerability.
Severity
6.2 (Medium)
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2022-43588 (GCVE-0-2022-43588)

Vulnerability from cvelistv5 – Published: 2022-11-28 10:20 – Updated: 2025-04-15 18:39
VLAI
Summary
A null pointer dereference vulnerability exists in the handle_ioctl_83150 functionality of Callback technologies CBFS Filter 20.0.8317. A specially crafted I/O request packet (IRP) can lead to denial of service. An attacker can issue an ioctl to trigger this vulnerability.
Severity
6.2 (Medium)
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2022-43495 (GCVE-0-2022-43495)

Vulnerability from cvelistv5 – Published: 2022-11-03 19:15 – Updated: 2025-04-30 14:38
VLAI
Title
An abnormal packet recieved when distributedhardware_device_manager joining a network could cause a device reboot.
Summary
OpenHarmony-v3.1.2 and prior versions had a DOS vulnerability in distributedhardware_device_manager when joining a network. Network attakcers can send an abonormal packet when joining a network, cause a nullptr reference and device reboot.
Severity
6.5 (Medium)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2022-41999 (GCVE-0-2022-41999)

Vulnerability from cvelistv5 – Published: 2022-12-23 23:03 – Updated: 2025-04-14 19:11
VLAI
Summary
A denial of service vulnerability exists in the DDS native tile reading functionality of OpenImageIO Project OpenImageIO v2.3.19.0 and v2.4.4.2. A specially-crafted .dds can lead to denial of service. An attacker can provide a malicious file to trigger this vulnerability.
Severity
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
OpenImageIO Project OpenImageIO Affected: v2.3.19.0
Affected: v2.4.4.2
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              "content": {
                "id": "CVE-2022-41999",
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                "timestamp": "2025-04-14T19:10:43.899266Z",
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          "vendor": "OpenImageIO Project",
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          "value": "A denial of service vulnerability exists in the DDS native tile reading functionality of OpenImageIO Project OpenImageIO v2.3.19.0 and v2.4.4.2. A specially-crafted .dds can lead to denial of service. An attacker can provide a malicious file to trigger this vulnerability."
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            "userInteraction": "NONE",
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    "datePublished": "2022-12-23T23:03:51.372Z",
    "dateReserved": "2022-10-07T00:00:00.000Z",
    "dateUpdated": "2025-04-14T19:11:14.162Z",
    "state": "PUBLISHED"
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  "dataVersion": "5.1"
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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.

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