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.
6359 vulnerabilities reference this CWE, most recent first.
CVE-2020-27279 (GCVE-0-2020-27279)
Vulnerability from cvelistv5 – Published: 2021-01-06 15:03 – Updated: 2026-06-02 20:09
VLAI
EPSS
VEX
Summary
A NULL pointer deference vulnerability has been identified in the protocol converter. An attacker could send a specially crafted packet that could reboot the device running Crimson 3.1 (Build versions prior to 3119.001).
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL POINTER DEREFERENCE CWE-476
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://us-cert.cisa.gov/ics/advisories/icsa-21-005-04 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Crimson 3.1 |
Affected:
Build versions prior to 3119.001
|
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CVE-2020-26235 (GCVE-0-2020-26235)
Vulnerability from cvelistv5 – Published: 2020-11-24 21:20 – Updated: 2024-08-04 15:56
VLAI
EPSS
VEX
Title
Segmentation fault in Rust time crate
Summary
In Rust time crate from version 0.2.7 and before version 0.2.23, unix-like operating systems may segfault due to dereferencing a dangling pointer in specific circumstances. This requires the user to set any environment variable in a different thread than the affected functions. The affected functions are time::UtcOffset::local_offset_at, time::UtcOffset::try_local_offset_at, time::UtcOffset::current_local_offset, time::UtcOffset::try_current_local_offset, time::OffsetDateTime::now_local and time::OffsetDateTime::try_now_local. Non-Unix targets are unaffected. This includes Windows and wasm. The issue was introduced in version 0.2.7 and fixed in version 0.2.23.
Severity
5.3 (Medium)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/time-rs/time/security/advisori… | x_refsource_CONFIRM |
| https://github.com/time-rs/time/issues/293 | x_refsource_MISC |
| https://crates.io/crates/time/0.2.23 | x_refsource_MISC |
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CVE-2020-26213 (GCVE-0-2020-26213)
Vulnerability from cvelistv5 – Published: 2020-11-06 16:45 – Updated: 2024-08-04 15:49
VLAI
EPSS
VEX
Title
Denial of Service in teler
Summary
In teler before version 0.0.1, if you run teler inside a Docker container and encounter `errors.Exit` function, it will cause denial-of-service (`SIGSEGV`) because it doesn't get process ID and process group ID of teler properly to kills. The issue is patched in teler 0.0.1 and 0.0.1-dev5.1.
Severity
5.9 (Medium)
CWE
- CWE-476 - {"CWE-476":"NULL Pointer Dereference"}
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/kitabisa/teler/security/adviso… | x_refsource_CONFIRM |
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CVE-2020-25858 (GCVE-0-2020-25858)
Vulnerability from cvelistv5 – Published: 2020-10-15 15:11 – Updated: 2024-08-04 15:49
VLAI
EPSS
VEX
Summary
The QCMAP_Web_CLIENT binary in the Qualcomm QCMAP software suite prior to versions released in October 2020 does not validate the return value of a strstr() or strchr() call in the Tokenizer() function. An attacker who invokes the web interface with a crafted URL can crash the process, causing denial of service. This version of QCMAP is used in many kinds of networking devices, primarily mobile hotspots and LTE routers.
Severity
No CVSS data available.
CWE
- CWE-476 - Remote authenticated null dereference (CWE-476)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| http://vdoo.com/blog/qualcomm-qcmap-vulnerabilities | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Qualcomm QCMAP |
Affected:
Fixed in October 2020
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CVE-2020-25692 (GCVE-0-2020-25692)
Vulnerability from cvelistv5 – Published: 2020-12-08 00:06 – Updated: 2024-08-04 15:40
VLAI
EPSS
VEX
Summary
A NULL pointer dereference was found in OpenLDAP server and was fixed in openldap 2.4.55, during a request for renaming RDNs. An unauthenticated attacker could remotely crash the slapd process by sending a specially crafted request, causing a Denial of Service.
Severity
No CVSS data available.
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1894567 | x_refsource_CONFIRM |
| https://security.netapp.com/advisory/ntap-2021010… | x_refsource_CONFIRM |
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CVE-2020-25639 (GCVE-0-2020-25639)
Vulnerability from cvelistv5 – Published: 2021-03-04 21:56 – Updated: 2024-08-04 15:40
VLAI
EPSS
VEX
Summary
A NULL pointer dereference flaw was found in the Linux kernel's GPU Nouveau driver functionality in versions prior to 5.12-rc1 in the way the user calls ioctl DRM_IOCTL_NOUVEAU_CHANNEL_ALLOC. This flaw allows a local user to crash the system.
Severity
No CVSS data available.
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1876995 | 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 |
Impacted products
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CVE-2020-24421 (GCVE-0-2020-24421)
Vulnerability from cvelistv5 – Published: 2020-10-21 21:28 – Updated: 2024-09-16 20:07
VLAI
EPSS
VEX
Title
Adobe InDesign 15.1.2 NULL Pointer Dereference Bug
Summary
Adobe InDesign version 15.1.2 (and earlier) is affected by a NULL pointer dereference bug that occurs when handling a malformed .indd file. The impact is limited to causing a denial-of-service of the client application. User interaction is required to exploit this issue.
Severity
5.5 (Medium)
CWE
- CWE-476 - NULL Pointer Dereference (CWE-476)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/indesig… | x_refsource_MISC |
Impacted products
Date Public
2020-10-20 00:00
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CVE-2020-17525 (GCVE-0-2020-17525)
Vulnerability from cvelistv5 – Published: 2021-03-17 09:20 – Updated: 2025-02-13 16:27
VLAI
EPSS
VEX
Title
Remote unauthenticated denial-of-service in Subversion mod_authz_svn
Summary
Subversion's mod_authz_svn module will crash if the server is using in-repository authz rules with the AuthzSVNReposRelativeAccessFile option and a client sends a request for a non-existing repository URL. This can lead to disruption for users of the service. This issue was fixed in mod_dav_svn+mod_authz_svn servers 1.14.1 and mod_dav_svn+mod_authz_svn servers 1.10.7
Severity
No CVSS data available.
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://subversion.apache.org/security/CVE-2020-1… | x_refsource_MISC |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Subversion |
Unaffected:
mod_authz_svn 1.10.7
Affected: mod_authz_svn , < 1.14.1 (custom) |
Credits
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CVE-2020-15209 (GCVE-0-2020-15209)
Vulnerability from cvelistv5 – Published: 2020-09-25 18:45 – Updated: 2024-08-04 13:08
VLAI
EPSS
VEX
Title
Null pointer dereference in tensorflow-lite
Summary
In tensorflow-lite before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1, a crafted TFLite model can force a node to have as input a tensor backed by a `nullptr` buffer. This can be achieved by changing a buffer index in the flatbuffer serialization to convert a read-only tensor to a read-write one. The runtime assumes that these buffers are written to before a possible read, hence they are initialized with `nullptr`. However, by changing the buffer index for a tensor and implicitly converting that tensor to be a read-write one, as there is nothing in the model that writes to it, we get a null pointer dereference. The issue is patched in commit 0b5662bc, and is released in TensorFlow versions 1.15.4, 2.0.3, 2.1.2, 2.2.1, or 2.3.1.
Severity
5.9 (Medium)
CWE
- CWE-476 - {"CWE-476":"NULL Pointer Dereference"}
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/tensorflow/tensorflow/releases… | x_refsource_MISC |
| https://github.com/tensorflow/tensorflow/security… | x_refsource_CONFIRM |
| https://github.com/tensorflow/tensorflow/commit/0… | x_refsource_MISC |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| tensorflow | tensorflow |
Affected:
< 1.15.4
Affected: >= 2.0.0, < 2.0.3 Affected: >= 2.1.0, < 2.1.2 Affected: >= 2.2.0, < 2.2.1 Affected: >= 2.3.0, < 2.3.1 |
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CVE-2020-15204 (GCVE-0-2020-15204)
Vulnerability from cvelistv5 – Published: 2020-09-25 18:46 – Updated: 2024-08-04 13:08
VLAI
EPSS
VEX
Title
Segfault in Tensorflow
Summary
In eager mode, TensorFlow before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1 does not set the session state. Hence, calling `tf.raw_ops.GetSessionHandle` or `tf.raw_ops.GetSessionHandleV2` results in a null pointer dereference In linked snippet, in eager mode, `ctx->session_state()` returns `nullptr`. Since code immediately dereferences this, we get a segmentation fault. The issue is patched in commit 9a133d73ae4b4664d22bd1aa6d654fec13c52ee1, and is released in TensorFlow versions 1.15.4, 2.0.3, 2.1.2, 2.2.1, or 2.3.1.
Severity
5.3 (Medium)
CWE
- CWE-476 - {"CWE-476":"NULL Pointer Dereference"}
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/tensorflow/tensorflow/releases… | x_refsource_MISC |
| https://github.com/tensorflow/tensorflow/security… | x_refsource_CONFIRM |
| https://github.com/tensorflow/tensorflow/commit/9… | x_refsource_MISC |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| tensorflow | tensorflow |
Affected:
< 1.15.4
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"name": "openSUSE-SU-2020:1766",
"refsource": "SUSE",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00065.html"
}
]
},
"source": {
"advisory": "GHSA-q8gv-q7wr-9jf8",
"discovery": "UNKNOWN"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2020-15204",
"datePublished": "2020-09-25T18:46:02.000Z",
"dateReserved": "2020-06-25T00:00:00.000Z",
"dateUpdated": "2024-08-04T13:08:22.924Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
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.