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.
6310 vulnerabilities reference this CWE, most recent first.
CVE-2022-0419 (GCVE-0-2022-0419)
Vulnerability from cvelistv5 – Published: 2022-02-01 10:38 – Updated: 2024-08-02 23:25
VLAI
EPSS
VEX
Title
NULL Pointer Dereference in radareorg/radare2
Summary
NULL Pointer Dereference in GitHub repository radareorg/radare2 prior to 5.6.0.
Severity
5.9 (Medium)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://huntr.dev/bounties/1f84e79d-70e7-4b29-8b4… | x_refsource_CONFIRM |
| https://github.com/radareorg/radare2/commit/feaa4… | 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://census-labs.com/news/2022/05/24/multiple-… | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2022/05/25/1 | mailing-listx_refsource_MLIST |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| radareorg | radareorg/radare2 |
Affected:
unspecified , < 5.6.0
(custom)
|
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CVE-2022-0326 (GCVE-0-2022-0326)
Vulnerability from cvelistv5 – Published: 2022-01-21 06:45 – Updated: 2024-08-02 23:25
VLAI
EPSS
VEX
Title
NULL Pointer Dereference in mruby/mruby
Summary
NULL Pointer Dereference in Homebrew mruby prior to 3.2.
Severity
5.5 (Medium)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://huntr.dev/bounties/795dcbd9-1695-44bb-8c5… | x_refsource_CONFIRM |
| https://github.com/mruby/mruby/commit/b611c43a5de… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| mruby | mruby/mruby |
Affected:
unspecified , < 3.2
(custom)
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CVE-2022-0240 (GCVE-0-2022-0240)
Vulnerability from cvelistv5 – Published: 2022-01-17 13:35 – Updated: 2024-08-02 23:18
VLAI
EPSS
VEX
Title
NULL Pointer Dereference in mruby/mruby
Summary
mruby is vulnerable to NULL Pointer Dereference
Severity
6.2 (Medium)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
2 references
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|---|---|
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Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| mruby | mruby/mruby |
Affected:
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CVE-2022-0168 (GCVE-0-2022-0168)
Vulnerability from cvelistv5 – Published: 2022-08-26 17:25 – Updated: 2024-08-02 23:18
VLAI
EPSS
VEX
Summary
A denial of service (DOS) issue was found in the Linux kernel’s smb2_ioctl_query_info function in the fs/cifs/smb2ops.c Common Internet File System (CIFS) due to an incorrect return from the memdup_user function. This flaw allows a local, privileged (CAP_SYS_ADMIN) attacker to crash the system.
Severity
No CVSS data available.
CWE
- CWE-476 - - NULL Pointer Dereference
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=2037386 | x_refsource_MISC |
| https://access.redhat.com/security/cve/CVE-2022-0168 | x_refsource_MISC |
| https://git.kernel.org/pub/scm/linux/kernel/git/t… | x_refsource_MISC |
Impacted products
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CVE-2021-44741 (GCVE-0-2021-44741)
Vulnerability from cvelistv5 – Published: 2022-01-14 19:05 – Updated: 2024-09-16 17:59
VLAI
EPSS
VEX
Title
Adobe Acrobat Pro DC NULL Pointer Dereference could lead to Application-denial-of-service
Summary
Acrobat Reader DC version 21.007.20099 (and earlier), 20.004.30017 (and earlier) and 17.011.30204 (and earlier) are affected by a Null pointer dereference vulnerability when parsing a specially crafted file. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Severity
CWE
- CWE-476 - NULL Pointer Dereference (CWE-476)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/acrobat… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Acrobat Reader |
Affected:
unspecified , ≤ 21.007.20099
(custom)
Affected: unspecified , ≤ 20.004.30017 (custom) Affected: unspecified , ≤ 17.011.30204 (custom) Affected: unspecified , ≤ None (custom) |
Date Public
2022-01-11 00:00
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CVE-2021-44740 (GCVE-0-2021-44740)
Vulnerability from cvelistv5 – Published: 2022-01-14 19:05 – Updated: 2024-09-16 17:03
VLAI
EPSS
VEX
Title
Adobe Acrobat Pro DC NULL Pointer Dereference could lead to Application-denial-of-service
Summary
Acrobat Reader DC version 21.007.20099 (and earlier), 20.004.30017 (and earlier) and 17.011.30204 (and earlier) are affected by a Null pointer dereference vulnerability when parsing a specially crafted file. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Severity
CWE
- CWE-476 - NULL Pointer Dereference (CWE-476)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/acrobat… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Acrobat Reader |
Affected:
unspecified , ≤ 21.007.20099
(custom)
Affected: unspecified , ≤ 20.004.30017 (custom) Affected: unspecified , ≤ 17.011.30204 (custom) Affected: unspecified , ≤ None (custom) |
Date Public
2022-01-11 00:00
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CVE-2021-44224 (GCVE-0-2021-44224)
Vulnerability from cvelistv5 – Published: 2021-12-20 11:20 – Updated: 2024-08-04 04:17
VLAI
EPSS
VEX
Title
Possible NULL dereference or SSRF in forward proxy configurations in Apache HTTP Server 2.4.51 and earlier
Summary
A crafted URI sent to httpd configured as a forward proxy (ProxyRequests on) can cause a crash (NULL pointer dereference) or, for configurations mixing forward and reverse proxy declarations, can allow for requests to be directed to a declared Unix Domain Socket endpoint (Server Side Request Forgery). This issue affects Apache HTTP Server 2.4.7 up to 2.4.51 (included).
Severity
No CVSS data available.
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
19 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
Affected:
2.4.7 , < Apache HTTP Server 2.4*
(custom)
|
Credits
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CVE-2021-43824 (GCVE-0-2021-43824)
Vulnerability from cvelistv5 – Published: 2022-02-22 22:15 – Updated: 2025-04-23 19:01
VLAI
EPSS
VEX
Title
Null pointer dereference in envoy
Summary
Envoy is an open source edge and service proxy, designed for cloud-native applications. In affected versions a crafted request crashes Envoy when a CONNECT request is sent to JWT filter configured with regex match. This provides a denial of service attack vector. The only workaround is to not use regex in the JWT filter. Users are advised to upgrade.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/envoyproxy/envoy/security/advi… | x_refsource_CONFIRM |
| https://github.com/envoyproxy/envoy/commit/937133… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.20.0, < 1.20.2
Affected: >= 1.19.0, < 1.19.3 Affected: < 1.18.6 Affected: >= 1.21.0, < 1.21.1 |
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CVE-2021-43750 (GCVE-0-2021-43750)
Vulnerability from cvelistv5 – Published: 2021-12-20 20:08 – Updated: 2025-04-23 19:16
VLAI
EPSS
VEX
Title
Adobe Premiere Rush NULL Pointer Dereference Local Denial-of-Service
Summary
Adobe Premiere Rush versions 1.5.16 (and earlier) are affected by a Null pointer dereference vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference (CWE-476)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/premier… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Premiere Rush |
Affected:
unspecified , ≤ 1.5.16
(custom)
Affected: unspecified , ≤ None (custom) |
Date Public
2021-12-14 00:00
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CVE-2021-43749 (GCVE-0-2021-43749)
Vulnerability from cvelistv5 – Published: 2021-12-20 20:08 – Updated: 2025-04-23 19:17
VLAI
EPSS
VEX
Title
Adobe Premiere Rush NULL Pointer Dereference Local Denial-of-Service
Summary
Adobe Premiere Rush versions 1.5.16 (and earlier) are affected by a Null pointer dereference vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference (CWE-476)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/premier… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Premiere Rush |
Affected:
unspecified , ≤ 1.5.16
(custom)
Affected: unspecified , ≤ None (custom) |
Date Public
2021-12-14 00:00
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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.