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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.

6581 vulnerabilities reference this CWE, most recent first.

CVE-2023-2177 (GCVE-0-2023-2177)

Vulnerability from cvelistv5 – Published: 2023-04-20 00:00 – Updated: 2025-03-18 19:58
VLAI
Summary
A null pointer dereference issue was found in the sctp network protocol in net/sctp/stream_sched.c in Linux Kernel. If stream_in allocation is failed, stream_out is freed which would further be accessed. A local user could use this flaw to crash the system or potentially cause a denial of service.
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 · CISA-ADP (v2.0.3)
Decision recorded 2025-03-06 15:56 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Linux Affected: Linux Kernel prior to Kernel 5.19 RC17
Show details on NVD website
To clipboard 

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CVE-2023-2166 (GCVE-0-2023-2166)

Vulnerability from cvelistv5 – Published: 2023-04-19 00:00 – Updated: 2025-02-05 15:13
VLAI
Summary
A null pointer dereference issue was found in can protocol in net/can/af_can.c in the Linux before Linux. ml_priv may not be initialized in the receive path of CAN frames. A local user could use this flaw to crash the system or potentially cause a denial of service.
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 · CISA-ADP (v2.0.3)
Decision recorded 2025-02-05 15:12 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Linux Affected: Linux Kernel version prior to Kernel 6.1 RC9
Show details on NVD website
To clipboard 

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CVE-2023-1667 (GCVE-0-2023-1667)

Vulnerability from cvelistv5 – Published: 2023-05-26 00:00 – Updated: 2024-08-02 05:57
VLAI
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
Impacted products
Vendor Product Version
n/a libssh Affected: libssh-2
Show details on NVD website
To clipboard 

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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
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)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5 (Medium)
CVSS:3.0/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 · CISA-ADP (v2.0.3)
Decision recorded 2024-03-01 21:47 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
JiangMin Antivirus Affected: 16.2.2022.418
Create a notification for this product.
Credits
Zeze7w (VulDB User)
Show details on NVD website
To clipboard 

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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
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)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5 (Medium)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-19 20:29 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
Jianming Antivirus Affected: 16.2.2022.418
Create a notification for this product.
Show details on NVD website
To clipboard 

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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
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)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-05 16:15 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
AVAST Avast Antivirus Affected: 22.5 , ≤ 22.10 (22.11)
Create a notification for this product.
AVG AVG Antivirus Affected: 22.5 , ≤ 22.10 (22.11)
Create a notification for this product.
Show details on NVD website
To clipboard 

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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
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 · CISA-ADP (v2.0.3)
Decision recorded 2025-02-20 18:49 UTC
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 · CISA-ADP (v2.0.3)
Decision recorded 2025-03-06 15:56 UTC
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 · CISA-ADP (v2.0.3)
Decision recorded 2025-02-27 19:54 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
vim vim/vim Affected: unspecified , < 9.0.1402 (custom)
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Show details on NVD website
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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 · CISA-ADP (v2.0.3)
Decision recorded 2025-03-06 14:37 UTC
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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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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