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.
6769 vulnerabilities reference this CWE, most recent first.
CVE-2022-2085 (GCVE-0-2022-2085)
Vulnerability from cvelistv5 – Published: 2022-06-16 00:00 – Updated: 2025-02-13 16:28
VLAI
EPSS
VEX
Summary
A NULL pointer dereference vulnerability was found in Ghostscript, which occurs when it tries to render a large number of bits in memory. When allocating a buffer device, it relies on an init_device_procs defined for the device that uses it as a prototype that depends upon the number of bits per pixel. For bpp > 64, mem_x_device is used and does not have an init_device_procs defined. This flaw allows an attacker to parse a large number of bits (more than 64 bits per pixel), which triggers a NULL pointer dereference flaw, causing an application to crash.
Severity
No CVSS data available.
CWE
- CWE-476 - - NULL Pointer Dereference
Assigner
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | GhostScript |
Affected:
Affects in Ghostscript v9.55.0
|
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CVE-2022-1852 (GCVE-0-2022-1852)
Vulnerability from cvelistv5 – Published: 2022-06-30 12:42 – Updated: 2024-08-03 00:17
VLAI
EPSS
VEX
Summary
A NULL pointer dereference flaw was found in the Linux kernel’s KVM module, which can lead to a denial of service in the x86_emulate_insn in arch/x86/kvm/emulate.c. This flaw occurs while executing an illegal instruction in guest in the Intel CPU.
Severity
No CVSS data available.
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/torvalds/linux/commit/fee060cd… | x_refsource_MISC |
| https://bugzilla.redhat.com/show_bug.cgi?id=2089815 | x_refsource_MISC |
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CVE-2022-1789 (GCVE-0-2022-1789)
Vulnerability from cvelistv5 – Published: 2022-05-31 18:48 – Updated: 2024-08-03 00:16
VLAI
EPSS
VEX
Summary
With shadow paging enabled, the INVPCID instruction results in a call to kvm_mmu_invpcid_gva. If INVPCID is executed with CR0.PG=0, the invlpg callback is not set and the result is a NULL pointer dereference.
Severity
No CVSS data available.
CWE
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://francozappa.github.io/about-bias/ | x_refsource_MISC |
| https://bugzilla.redhat.com/show_bug.cgi?id=1832397 | x_refsource_MISC |
| https://kb.cert.org/vuls/id/647177/ | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://www.debian.org/security/2022/dsa-5161 | vendor-advisoryx_refsource_DEBIAN |
Impacted products
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CVE-2022-1748 (GCVE-0-2022-1748)
Vulnerability from cvelistv5 – Published: 2022-08-17 20:08 – Updated: 2025-04-16 16:13
VLAI
EPSS
VEX
Title
Softing Secure Integration Server NULL Pointer Dereference
Summary
Softing OPC UA C++ Server SDK, Secure Integration Server, edgeConnector, edgeAggregator, OPC Suite, and uaGate are affected by a NULL pointer dereference vulnerability.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-16 15:54 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.cisa.gov/uscert/ics/advisories/icsa-2… | x_refsource_CONFIRM |
| https://industrial.softing.com/fileadmin/psirt/do… | x_refsource_CONFIRM |
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| Softing | Secure Integration Server |
Affected:
V1.22
|
|
| Softing | OPC UA C++ SDK |
Affected:
V6.00
|
|
| Softing | edgeConnector Siemens |
Affected:
V3.10
|
|
| Softing | edgeConnector 840D |
Affected:
V3.10
|
|
| Softing | edgeConnector Modbus |
Affected:
V3.10
|
|
| Softing | edgeAggregator |
Affected:
V3.10
|
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CVE-2022-1725 (GCVE-0-2022-1725)
Vulnerability from cvelistv5 – Published: 2022-05-16 00:00 – Updated: 2024-08-03 00:16
VLAI
EPSS
VEX
Title
NULL Pointer Dereference in vim/vim
Summary
NULL Pointer Dereference in GitHub repository vim/vim prior to 8.2.4959.
Severity
6.6 (Medium)
CWE
- CWE-476 - NULL Pointer Dereference
References
6 references
Impacted products
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CVE-2022-1674 (GCVE-0-2022-1674)
Vulnerability from cvelistv5 – Published: 2022-05-12 00:00 – Updated: 2026-10-08 21:14
VLAI
EPSS
VEX
Title
NULL Pointer Dereference in function vim_regexec_string at regexp.c:2733 in vim/vim
Summary
NULL Pointer Dereference in function vim_regexec_string at regexp.c:2733 in GitHub repository vim/vim prior to 8.2.4938. NULL Pointer Dereference in function vim_regexec_string at regexp.c:2733 allows attackers to cause a denial of service (application crash) via a crafted input.
Severity
6.6 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 21:12 UTC
CWE
- CWE-476 - NULL Pointer Dereference
References
10 references
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| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://security.gentoo.org/glsa/202208-32 | vendor-advisory |
| https://support.apple.com/kb/HT213488 | |
| http://seclists.org/fulldisclosure/2022/Oct/41 | mailing-list |
| http://seclists.org/fulldisclosure/2022/Oct/28 | mailing-list |
| https://security.gentoo.org/glsa/202305-16 | vendor-advisory |
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CVE-2022-1671 (GCVE-0-2022-1671)
Vulnerability from cvelistv5 – Published: 2022-07-26 16:36 – Updated: 2024-08-03 00:10
VLAI
EPSS
VEX
Summary
A NULL pointer dereference flaw was found in rxrpc_preparse_s in net/rxrpc/server_key.c in the Linux kernel. This flaw allows a local attacker to crash the system or leak internal kernel information.
Severity
No CVSS data available.
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://git.kernel.org/pub/scm/linux/kernel/git/t… | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2022090… | x_refsource_CONFIRM |
| https://security.netapp.com/advisory/ntap-2022090… | x_refsource_CONFIRM |
Impacted products
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CVE-2022-1649 (GCVE-0-2022-1649)
Vulnerability from cvelistv5 – Published: 2022-05-10 09:55 – Updated: 2024-08-03 00:10
VLAI
EPSS
VEX
Title
Null pointer dereference in libr/bin/format/mach0/mach0.c in radareorg/radare2 in radareorg/radare2
Summary
Null pointer dereference in libr/bin/format/mach0/mach0.c in radareorg/radare2 in GitHub repository radareorg/radare2 prior to 5.7.0. It is likely to be exploitable. For more general description of heap buffer overflow, see [CWE](https://cwe.mitre.org/data/definitions/476.html).
Severity
7.6 (High)
CWE
- CWE-476 - NULL Pointer Dereference
References
2 references
| URL | Tags |
|---|---|
| https://huntr.dev/bounties/c07e4918-cf86-4d2e-896… | x_refsource_CONFIRM |
| https://github.com/radareorg/radare2/commit/a5aaf… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| radareorg | radareorg/radare2 |
Affected:
unspecified , < 5.7.0
(custom)
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CVE-2022-1620 (GCVE-0-2022-1620)
Vulnerability from cvelistv5 – Published: 2022-05-08 00:00 – Updated: 2026-10-08 21:14
VLAI
EPSS
VEX
Title
NULL Pointer Dereference in function vim_regexec_string at regexp.c:2729 in vim/vim
Summary
NULL Pointer Dereference in function vim_regexec_string at regexp.c:2729 in GitHub repository vim/vim prior to 8.2.4901. NULL Pointer Dereference in function vim_regexec_string at regexp.c:2729 allows attackers to cause a denial of service (application crash) via a crafted input.
Severity
6.6 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 21:12 UTC
CWE
- CWE-476 - NULL Pointer Dereference
References
10 references
| URL | Tags |
|---|---|
| https://huntr.dev/bounties/7a4c59f3-fcc0-4496-995… | |
| https://github.com/vim/vim/commit/8e4b76da1d7e987… | |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://security.gentoo.org/glsa/202208-32 | vendor-advisory |
| https://support.apple.com/kb/HT213488 | |
| http://seclists.org/fulldisclosure/2022/Oct/41 | mailing-list |
| http://seclists.org/fulldisclosure/2022/Oct/28 | mailing-list |
| https://security.gentoo.org/glsa/202305-16 | vendor-advisory |
Impacted products
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CVE-2022-1507 (GCVE-0-2022-1507)
Vulnerability from cvelistv5 – Published: 2022-04-27 16:55 – Updated: 2024-08-03 00:03
VLAI
EPSS
VEX
Title
chafa: NULL Pointer Dereference in function gif_internal_decode_frame at libnsgif.c:599 allows attackers to cause a denial of service (crash) via a crafted input file. in hpjansson/chafa
Summary
chafa: NULL Pointer Dereference in function gif_internal_decode_frame at libnsgif.c:599 allows attackers to cause a denial of service (crash) via a crafted input file. in GitHub repository hpjansson/chafa prior to 1.10.2. chafa: NULL Pointer Dereference in function gif_internal_decode_frame at libnsgif.c:599 allows attackers to cause a denial of service (crash) via a crafted input file.
Severity
5.5 (Medium)
CWE
- CWE-476 - NULL Pointer Dereference
References
5 references
| URL | Tags |
|---|---|
| https://huntr.dev/bounties/104d8c5d-cac5-4baa-9ac… | x_refsource_CONFIRM |
| https://github.com/hpjansson/chafa/commit/e4b777c… | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| hpjansson | hpjansson/chafa |
Affected:
unspecified , < 1.10.2
(custom)
|
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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.