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.
6731 vulnerabilities reference this CWE, most recent first.
CVE-2026-47526 (GCVE-0-2026-47526)
Vulnerability from cvelistv5 – Published: 2026-09-30 15:54 – Updated: 2026-09-30 17:29
VLAI
EPSS
VEX
Summary
NVIDIA GPU Display Driver for Windows and Linux contains a vulnerability in the firmware where an attacker could cause a null pointer dereference. A successful exploit of this vulnerability might lead to denial of service.
Severity
4.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 16:45 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
22 products
| Vendor | Product | Version | |
|---|---|---|---|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 610.88
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 610.88
|
|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 616.56
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 616.92
|
|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 582.78 Only GPUs based on the NVIDIA Maxwell, Volta, and Pascal GPU architectures are affected.
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 582.78
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 596.86
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 596.86
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 616.92
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 610.88
|
|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 615.71.09
|
|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 610.57.04
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 615.71.09
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 610.57.04
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 595.91.07
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 580.178.04
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 615.71.09
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 610.57.04
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 595.91.07
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 580.178.04
|
|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 595.91.07
|
|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 580.178.04
|
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CVE-2026-47517 (GCVE-0-2026-47517)
Vulnerability from cvelistv5 – Published: 2026-09-30 15:53 – Updated: 2026-09-30 17:59
VLAI
EPSS
VEX
Summary
NVIDIA GPU Display Driver for Linux contains a vulnerability in the kernel mode driver where a local user may cause a null pointer dereference by submitting a crafted ioctl. A successful exploit of this vulnerability might lead to denial of service.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 17:48 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
16 products
| Vendor | Product | Version | |
|---|---|---|---|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 615.71.09
|
|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 610.57.04
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 615.71.09
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 610.57.04
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 595.91.07
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 580.178.04
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 615.71.09
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 610.57.04
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 595.91.07
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 580.178.04
|
|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 595.91.07
|
|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 580.178.04
|
|
| NVIDIA | Guest driver |
Affected:
595.71.05(All versions prior to and including vGPU 20.1)
|
|
| NVIDIA | Guest driver |
Affected:
580.159.03(All versions prior to and including vGPU 19.5)
|
|
| NVIDIA | Virtual GPU Manager |
Affected:
595.71.03(All versions prior to and including vGPU 20.1)
|
|
| NVIDIA | Virtual GPU Manager |
Affected:
580.159.01(All versions prior to and including vGPU 19.5)
|
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CVE-2026-47427 (GCVE-0-2026-47427)
Vulnerability from cvelistv5 – Published: 2026-07-28 15:32 – Updated: 2026-07-28 17:31
VLAI
EPSS
VEX
Title
GitHub MCP Server: Nil Pointer Dereference DoS in completion/complete Handler
Summary
GitHub MCP Server is GitHub's official MCP Server. Prior to 1.1.0, the CompletionsHandler function in pkg/github/server.go accesses params.Ref without first checking whether it is nil, so a completion/complete request with a missing or empty ref field triggers a nil pointer dereference and a Go runtime panic; because the crash occurs before any authentication or token validation, any unauthenticated client able to send JSON-RPC messages can crash the server, resulting in a complete denial of service. This issue is fixed in version 1.1.0.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-28 17:31 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/github/github-mcp-server/secur… | x_refsource_CONFIRM |
| https://github.com/github/github-mcp-server/pull/2502 | x_refsource_MISC |
| https://github.com/github/github-mcp-server/commi… | x_refsource_MISC |
| https://github.com/github/github-mcp-server/relea… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| github | github-mcp-server |
Affected:
< 1.1.0
|
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CVE-2026-47337 (GCVE-0-2026-47337)
Vulnerability from cvelistv5 – Published: 2026-05-28 18:29 – Updated: 2026-05-28 19:23
VLAI
EPSS
VEX
Title
NULL pointer dereference in Ubuntu Linux AppArmor IPv4/IPv6 socket mediation
Summary
Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling of AF_INET/AF_INET6 socket mediation. The bug can be triggered by an unprivileged local user. This can lead to a kernel oops.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-28 19:21 UTC
CWE
- CWE-476 - NULL pointer dereference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://git.launchpad.net/~ubuntu-kernel/ubuntu/+… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Canonical | Ubuntu Linux |
Affected:
6.8.0 , < 6.8.0-124.124
(dpkg)
Affected: 6.17.0 , < 6.17.0-35.35 (dpkg) Affected: 7.0.0 , < 7.0.0-22.22 (dpkg) |
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CVE-2026-47335 (GCVE-0-2026-47335)
Vulnerability from cvelistv5 – Published: 2026-05-28 18:28 – Updated: 2026-05-28 19:23
VLAI
EPSS
VEX
Title
NULL pointer dereference in Ubuntu Linux AppArmor notification handling
Summary
Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor notifications. The bug can be triggered by an unprivileged local user. This can lead to a kernel panic.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-28 19:21 UTC
CWE
- CWE-476 - NULL pointer dereference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://git.launchpad.net/~ubuntu-kernel/ubuntu/+… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Canonical | Ubuntu Linux |
Affected:
6.8.0 , < 6.8.0-124.124
(dpkg)
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CVE-2026-47327 (GCVE-0-2026-47327)
Vulnerability from cvelistv5 – Published: 2026-05-28 18:27 – Updated: 2026-05-28 19:25
VLAI
EPSS
VEX
Title
NULL pointer dereference in Ubuntu Linux AppArmor notification handling
Summary
Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor notifications. The bug can be triggered by an unprivileged local user. This can lead to a kernel oops.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-28 19:20 UTC
CWE
- CWE-476 - NULL pointer dereference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://git.launchpad.net/~ubuntu-kernel/ubuntu/+… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Canonical | Ubuntu Linux |
Affected:
6.8.0 , < 6.8.0-124.124
(dpkg)
Affected: 6.17.0 , < 6.17.0-35.35 (dpkg) Affected: 7.0.0 , < 7.0.0-22.22 (dpkg) |
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CVE-2026-47308 (GCVE-0-2026-47308)
Vulnerability from cvelistv5 – Published: 2026-05-19 04:17 – Updated: 2026-05-19 12:38
VLAI
EPSS
VEX
Summary
NULL pointer dereference vulnerability in Samsung Open Source Walrus allows Pointer Manipulation.
This issue affects Walrus: f339b8ee4ea701772e8ae640b3d1b12ac02b1ae9.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-19 12:38 UTC
CWE
- CWE-476 - NULL pointer dereference
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Samsung Open Source | Walrus |
Affected:
f339b8ee4ea701772e8ae640b3d1b12ac02b1ae9
|
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CVE-2026-47307 (GCVE-0-2026-47307)
Vulnerability from cvelistv5 – Published: 2026-05-19 02:51 – Updated: 2026-05-19 12:44
VLAI
EPSS
VEX
Summary
NULL pointer dereference vulnerability in Samsung Open Source Walrus allows an attacker to cause a denial of service via a crafted WebAssembly module containing deeply nested instructions.
This issue affects Walrus: f339b8ee4ea701772e8ae640b3d1b12ac02b1ae9.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-19 12:44 UTC
CWE
- CWE-476 - NULL pointer dereference
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Samsung Open Source | Walrus |
Affected:
f339b8ee4ea701772e8ae640b3d1b12ac02b1ae9
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CVE-2026-47276 (GCVE-0-2026-47276)
Vulnerability from cvelistv5 – Published: 2026-07-20 16:44 – Updated: 2026-07-20 17:41
VLAI
EPSS
VEX
Title
NULL Pointer Dereference in REST API properties_parse via Malformed user_properties
Summary
In nanomq versions 0.24.11 and earlier, a NULL pointer dereference in `properties_parse()` allows an authenticated attacker to crash the NanoMQ broker by sending a POST request to `/api/v4/mqtt/publish` with `user_properties` as a JSON array instead of a JSON object. The crash occurs because `strlen()` is called on a NULL `item->string` pointer when iterating over array elements. An authenticated attacker can exploit this to crash the NanoMQ broker process. This is patched in version 0.24.14.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-20 17:40 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
| URL | Tags |
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CVE-2026-47275 (GCVE-0-2026-47275)
Vulnerability from cvelistv5 – Published: 2026-07-20 16:43 – Updated: 2026-07-20 18:56
VLAI
EPSS
VEX
Title
nanomq NULL Pointer Dereference in MQTTv5 Client CONNECT Decoder Leading to Remote DoS
Summary
In nanomq versions 0.24.11 and earlier, a NULL pointer dereference in `nni_mqttv5_msg_decode_connect()` allows a malicious MQTT broker to crash any connecting NanoMQ MQTTv5 client (including bridge mode) with a single packet, causing remote denial of service via SIGSEGV. In `nni_mqttv5_msg_decode_connect()` (`mqtt_codec.c:1863`), the code iterates over CONNECT properties using variable `prop` when it should use `will_prop`. When a CONNECT packet has no connect-level properties (`prop == NULL`) but has will properties (`will_prop != NULL`), dereferencing `prop->next` causes SIGSEGV at address `0x38` (NULL + `offsetof(property, next)`).
This affects both `nanomq_cli` and **NanoMQ bridge mode** (Core component), as both use the same `mqtt_client.c` receive path. This can lead to remote DoS if a malicious MQTT broker can crash the client process with a single 35-byte packet and persistent DoS if auto-reconnect causes infinite crash loop.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-20 18:56 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
| URL | Tags |
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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.