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.
6346 vulnerabilities reference this CWE, most recent first.
CVE-2023-1667 (GCVE-0-2023-1667)
Vulnerability from cvelistv5 – Published: 2023-05-26 00:00 – Updated: 2024-08-02 05:57
VLAI
EPSS
VEX
Summary
A NULL pointer dereference was found In libssh during re-keying with algorithm guessing. This issue may allow an authenticated client to cause a denial of service.
Severity
No CVSS data available.
CWE
Assigner
References
6 references
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CVE-2023-1631 (GCVE-0-2023-1631)
Vulnerability from cvelistv5 – Published: 2023-03-25 12:00 – Updated: 2024-11-22 16:50
VLAI
EPSS
VEX
Title
JiangMin Antivirus IOCTL kvcore.sys 0x222010 null pointer dereference
Summary
A vulnerability, which was classified as problematic, was found in JiangMin Antivirus 16.2.2022.418. This affects the function 0x222010 in the library kvcore.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. The identifier VDB-224013 was assigned to this vulnerability.
Severity
5.5 (Medium)
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.224013 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.224013 | signaturepermissions-required |
| https://github.com/zeze-zeze/WindowsKernelVuln/tr… | related |
| https://drive.google.com/file/d/1Div9mElTdsluLrU2… | exploit |
Credits
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CVE-2023-1628 (GCVE-0-2023-1628)
Vulnerability from cvelistv5 – Published: 2023-03-25 11:00 – Updated: 2025-02-19 20:29
VLAI
EPSS
VEX
Title
Jianming Antivirus IoControlCode kvcore.sys null pointer dereference
Summary
A vulnerability classified as problematic has been found in Jianming Antivirus 16.2.2022.418. Affected is an unknown function in the library kvcore.sys of the component IoControlCode Handler. The manipulation leads to null pointer dereference. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. VDB-224010 is the identifier assigned to this vulnerability.
Severity
5.5 (Medium)
5.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
4 references
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| https://github.com/zeze-zeze/WindowsKernelVuln/tr… | broken-link |
| https://drive.google.com/file/d/1Div9mElTdsluLrU2… | exploit |
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CVE-2023-1587 (GCVE-0-2023-1587)
Vulnerability from cvelistv5 – Published: 2023-04-19 18:39 – Updated: 2025-02-05 16:15
VLAI
EPSS
VEX
Summary
Avast and AVG Antivirus for Windows were susceptible to a NULL pointer dereference issue via RPC-interface. The issue was fixed with Avast and AVG Antivirus version 22.11
Severity
5.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| AVAST | Avast Antivirus |
Affected:
22.5 , ≤ 22.10
(22.11)
|
|
| AVG | AVG Antivirus |
Affected:
22.5 , ≤ 22.10
(22.11)
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CVE-2023-1583 (GCVE-0-2023-1583)
Vulnerability from cvelistv5 – Published: 2023-03-24 00:00 – Updated: 2025-02-20 18:50
VLAI
EPSS
VEX
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)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Linux kernel |
Affected:
affected kernel 5.19, 6.0, 6.1, 6.2, 6.3
|
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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
EPSS
VEX
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)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
Impacted products
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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
EPSS
VEX
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)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
3 references
Impacted products
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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
EPSS
VEX
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)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
5 references
Impacted products
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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
EPSS
VEX
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
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
3 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
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| FabulaTech | Webcam for Remote Desktop |
Affected:
2.8.42
|
Credits
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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
EPSS
VEX
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)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Linux kernel netfilter subsystem. |
Affected:
Fixed in 6.0-rc1
|
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}
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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.