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.

6305 vulnerabilities reference this CWE, most recent first.

CVE-2023-1583 (GCVE-0-2023-1583)

Vulnerability from cvelistv5 – Published: 2023-03-24 00:00 – Updated: 2025-02-20 18:50
VLAI
Summary
A NULL pointer dereference was found in io_file_bitmap_get in io_uring/filetable.c in the io_uring sub-component in the Linux Kernel. When fixed files are unregistered, some context information (file_alloc_{start,end} and alloc_hint) is not cleared. A subsequent request that has auto index selection enabled via IORING_FILE_INDEX_ALLOC can cause a NULL pointer dereference. An unprivileged user can use the flaw to cause a system crash.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Linux kernel Affected: affected kernel 5.19, 6.0, 6.1, 6.2, 6.3
Show details on NVD website
To clipboard 

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CVE-2023-1382 (GCVE-0-2023-1382)

Vulnerability from cvelistv5 – Published: 2023-04-19 00:00 – Updated: 2025-03-19 15:37
VLAI
Summary
A data race flaw was found in the Linux kernel, between where con is allocated and con->sock is set. This issue leads to a NULL pointer dereference when accessing con->sock->sk in net/tipc/topsrv.c in the tipc protocol in the Linux kernel.
Severity
4.7 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Kernel Affected: Linux Kernel prior to Kernel 6.1 RC7
Show details on NVD website
To clipboard 

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CVE-2023-1355 (GCVE-0-2023-1355)

Vulnerability from cvelistv5 – Published: 2023-03-11 00:00 – Updated: 2025-02-27 19:54
VLAI
Title
NULL Pointer Dereference in vim/vim
Summary
NULL Pointer Dereference in GitHub repository vim/vim prior to 9.0.1402.
Severity
8.4 (High)
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
vim vim/vim Affected: unspecified , < 9.0.1402 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2023-1264 (GCVE-0-2023-1264)

Vulnerability from cvelistv5 – Published: 2023-03-07 00:00 – Updated: 2025-03-06 14:38
VLAI
Title
NULL Pointer Dereference in vim/vim
Summary
NULL Pointer Dereference in GitHub repository vim/vim prior to 9.0.1392.
Severity
6.6 (Medium)
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/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
Vendor Product Version
vim vim/vim Affected: unspecified , < 9.0.1392 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2023-1186 (GCVE-0-2023-1186)

Vulnerability from cvelistv5 – Published: 2023-03-06 07:09 – Updated: 2024-11-25 15:22
VLAI
Title
FabulaTech Webcam for Remote Desktop IOCTL ftwebcam.sys 0x222018 null pointer dereference
Summary
A vulnerability has been found in FabulaTech Webcam for Remote Desktop 2.8.42 and classified as problematic. This vulnerability affects the function 0x222010/0x222018 in the library ftwebcam.sys of the component IOCTL Handler. The manipulation leads to null pointer dereference. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used. VDB-222358 is the identifier assigned to this vulnerability.
Severity
3.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
3.3 (Low)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
URL Tags
https://vuldb.com/?id.222358 vdb-entrytechnical-description
https://vuldb.com/?ctiid.222358 signaturepermissions-required
https://github.com/zeze-zeze/WindowsKernelVuln/tr… exploit
Impacted products
Credits
Zeze7w (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2023-1095 (GCVE-0-2023-1095)

Vulnerability from cvelistv5 – Published: 2023-02-28 00:00 – Updated: 2025-03-18 15:14
VLAI
Summary
In nf_tables_updtable, if nf_tables_table_enable returns an error, nft_trans_destroy is called to free the transaction object. nft_trans_destroy() calls list_del(), but the transaction was never placed on a list -- the list head is all zeroes, this results in a NULL pointer dereference.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Linux kernel netfilter subsystem. Affected: Fixed in 6.0-rc1
Show details on NVD website
To clipboard 

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CVE-2023-0973 (GCVE-0-2023-0973)

Vulnerability from cvelistv5 – Published: 2023-03-13 17:06 – Updated: 2025-01-16 21:55
VLAI
Title
Step Tools Third-Party
Summary
STEPTools v18SP1 ifcmesh library (v18.1) is affected due to a null pointer dereference, which could allow an attacker to deny application usage when reading a specially constructed file, resulting in an application crash.
Severity
2.2 (Low)
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Date Public
2023-03-09 18:00
Credits
Siemens reported this third-party vulnerability to CISA.
Show details on NVD website
To clipboard 

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CVE-2023-0845 (GCVE-0-2023-0845)

Vulnerability from cvelistv5 – Published: 2023-03-09 15:14 – Updated: 2025-02-28 16:24
VLAI
Title
Consul Server Panic when Ingress and API Gateways Configured with Peering
Summary
Consul and Consul Enterprise allowed an authenticated user with service:write permissions to trigger a workflow that causes Consul server and client agents to crash under certain circumstances. This vulnerability was fixed in Consul 1.14.5.
Severity
4.9 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/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
HashiCorp Consul Affected: 1.14.0
Affected: 1.14.1
Affected: 1.14.2
Affected: 1.14.3
Affected: 1.14.4
Create a notification for this product.
HashiCorp Consul Enterprise Affected: 1.14.0
Affected: 1.14.1
Affected: 1.14.2
Affected: 1.14.3
Affected: 1.14.4
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2023-0458 (GCVE-0-2023-0458)

Vulnerability from cvelistv5 – Published: 2023-04-26 18:03 – Updated: 2025-02-13 16:38
VLAI
Title
Spectre V1 Gadget in do_prlimit in the Linux Kernel
Summary
A speculative pointer dereference problem exists in the Linux Kernel on the do_prlimit() function. The resource argument value is controlled and is used in pointer arithmetic for the 'rlim' variable and can be used to leak the contents. We recommend upgrading past version 6.1.8 or commit 739790605705ddcf18f21782b9c99ad7d53a8c11
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
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
Linux Linux Kernel Affected: 0 , ≤ 6.1.8 (custom)
Create a notification for this product.
Date Public
2023-01-21 20:00
Show details on NVD website
To clipboard 

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CVE-2023-0394 (GCVE-0-2023-0394)

Vulnerability from cvelistv5 – Published: 2023-01-24 00:00 – Updated: 2025-03-31 14:48
VLAI
Summary
A NULL pointer dereference flaw was found in rawv6_push_pending_frames in net/ipv6/raw.c in the network subcomponent in the Linux kernel. This flaw causes the system to crash.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Kernel Affected: Linux kernel prior to Kernel 6.2 RC4
Show details on NVD website
To clipboard 

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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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