Weakness (CWE)
CWE-476: NULL Pointer Dereference
The product dereferences a pointer that it expects to be valid but is NULL.
How to prevent it (5 mitigations)
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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].
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Requirements
Select a programming language that is not susceptible to these issues.
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Implementation
Check the results of all functions that return a value and verify that the value is non-null before acting upon it.
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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.
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Implementation
Explicitly initialize all variables and other data stores, either during declaration or just before the first usage.
Source: MITRE CWE-476
2,672 results · Feed
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Medium 4.0
Malicious response from KubeEdge can crash CSI Driver controller server
KubeEdge is built upon Kubernetes and extends native containerized application orchestration and device management to hosts at the Edge. In affected versions a malicious message response from KubeEdge can crash the CSI Driver controller server by triggering a…
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Medium 4.2
Malicious Message can crash CloudCore in KubeEdge
KubeEdge is built upon Kubernetes and extends native containerized application orchestration and device management to hosts at the Edge. In affected versions a malicious message can crash CloudCore by triggering a nil-pointer dereference in the UDS Server. Si…
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High 7.8
NULL Pointer Dereference in vim/vim
NULL Pointer Dereference in GitHub repository vim/vim prior to 8.2.5163.
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High 7.5
OFFIS DCMTK NULL Pointer Dereference
OFFIS DCMTK's (All versions prior to 3.6.7) has a NULL pointer dereference vulnerability while processing DICOM files, which may result in a denial-of-service condition.
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Unscored —
A NULL pointer dereference vulnerability was found in Ghostscript, which occurs when it tries to render a large number …
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High 7.5
SMBv3 FileNormalizedNameInformation NULL Pointer Dereference
Microsoft Windows SMBv3 suffers from a null pointer dereference in versions of Windows prior to the April, 2022 patch set. By sending a malformed FileNormalizedNameInformation SMBv3 request over a named pipe, an attacker can cause a Blue Screen of Death (BSOD…
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Medium 5.9
Segmentation fault leading to crash in Envoy
Envoy is a cloud-native high-performance proxy. Versions of envoy prior to 1.22.1 are subject to a segmentation fault in the GrpcHealthCheckerImpl. Envoy can perform various types of upstream health checking. One of them uses gRPC. Envoy also has a feature wh…
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Unscored —
With shadow paging enabled, the INVPCID instruction results in a call to kvm_mmu_invpcid_gva. If INVPCID is executed wi…
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Medium 5.5
Missing validation in `QuantizedConv2D` results in undefined behavior in TensorFlow
TensorFlow is an open source platform for machine learning. Prior to versions 2.9.0, 2.8.1, 2.7.2, and 2.6.4, the implementation of `tf.raw_ops.QuantizedConv2D` does not fully validate the input arguments. In this case, references get bound to `nullptr` for e…
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Medium 5.5
Segfault due to missing support for quantized types in TensorFlow
TensorFlow is an open source platform for machine learning. Prior to versions 2.9.0, 2.8.1, 2.7.2, and 2.6.4, there is a potential for segfault / denial of service in TensorFlow by calling `tf.compat.v1.*` ops which don't yet have support for quantized types,…
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Medium 5.5
Missing validation results in undefined behavior in `SparseTensorDenseAdd` in TensorFlow
TensorFlow is an open source platform for machine learning. Prior to versions 2.9.0, 2.8.1, 2.7.2, and 2.6.4, the implementation of `tf.raw_ops.SparseTensorDenseAdd` does not fully validate the input arguments. In this case, a reference gets bound to a `nullp…
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Medium 5.5
NVIDIA GPU Display Driver for Windows contains a vulnerability in the kernel mode layer (nvlddmkm.sys) handler for Dxgk…
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Medium 6.6
NULL Pointer Dereference in vim/vim
NULL Pointer Dereference in GitHub repository vim/vim prior to 8.2.4959.
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Medium 6.6
NULL Pointer Dereference in function vim_regexec_string at regexp.c:2733 in vim/vim
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)…
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High 7.6
Null pointer dereference in libr/bin/format/mach0/mach0.c in radareorg/radare2 in radareorg/radare2
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/de…
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Unscored —
A vulnerability has been identified in JT2Go (All versions < V13.3.0.3), Teamcenter Visualization V13.3 (All versions <…
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Unscored —
A vulnerability has been identified in JT2Go (All versions < V13.3.0.3), Teamcenter Visualization V13.3 (All versions <…
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Medium 6.6
NULL Pointer Dereference in function vim_regexec_string at regexp.c:2729 in vim/vim
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)…
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High 7.5
On F5 BIG-IP LTM, Advanced WAF, ASM, or APM 16.1.x versions prior to 16.1.2.2, 15.1.x versions prior to 15.1.5, 14.1.x …
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High 8.6
Cisco Firepower Threat Defense Software TCP Proxy Denial of Service Vulnerability
A vulnerability in the TCP proxy functionality of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a denial of service (DoS) condition. This vulnerability is due to improper handling of TCP flows. An att…
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Medium 5.5
XMP-Toolkit Null Pointer Dereference Application denial-of-service
XMP Toolkit 2021.07 (and earlier) is 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 cu…
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Unscored —
A NULL pointer dereference flaw was found in pesign's cms_set_pw_data() function of the cms_common.c file. The function…
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Low 3.3
A Malformed Lua script can crash Redis
Redis is an in-memory database that persists on disk. Prior to versions 6.2.7 and 7.0.0, an attacker attempting to load a specially crafted Lua script can cause NULL pointer dereference which will result with a crash of the redis-server process. The problem i…
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Medium 5.5
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
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 fu…
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Unscored —
An issue was discovered in in bwm-ng v0.6.2. An arbitrary null write exists in get_cmdln_options() function in src/opti…
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Medium 5.3
NULL Pointer Dereference in radareorg/radare2
NULL Pointer Dereference in GitHub repository radareorg/radare2 prior to 5.6.8. This vulnerability is capable of making the radare2 crash, thus affecting the availability of the system.
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Medium 5.9
Null pointer dereference vulnerability in parser_hvcC function of libsimba library prior to SMR Apr-2022 Release 1 allo…
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Medium 5.9
Null pointer dereference vulnerability in parser_infe function of libsimba library prior to SMR Apr-2022 Release 1 allo…
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Medium 5.9
Null pointer dereference vulnerability in parser_unknown_property function in libsimba library prior to SMR Apr-2022 Re…
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Medium 5.9
Null pointer dereference vulnerability in parser_ispe function in libsimba library prior to SMR Apr-2022 Release 1 allo…
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Medium 5.9
Null pointer dereference vulnerability in parser_colr function in libsimba library prior to SMR Apr-2022 Release 1 allo…
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Medium 5.9
Null pointer dereference vulnerability in parser_auxC function in libsimba library prior to SMR Apr-2022 Release 1 allo…
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Medium 5.9
Null pointer dereference vulnerability in parser_irot function in libsimba library prior to SMR Apr-2022 Release 1 allo…
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Medium 6.6
NULL Pointer Dereference in r_bin_ne_get_entrypoints function in radareorg/radare2
NULL Pointer Dereference in r_bin_ne_get_entrypoints function in GitHub repository radareorg/radare2 prior to 5.6.8. This vulnerability allows attackers to cause a denial of service (application crash).
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Medium 6.5
Null Pointer Dereference in multiple CODESYS products can lead to a DoS.
An authenticated remote attacker can cause a null pointer dereference in the CmpSettings component of the affected CODESYS products which leads to a crash.
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High 7.1
NULL Pointer Dereference in mrb_vm_exec with super in mruby/mruby
NULL Pointer Dereference in mrb_vm_exec with super in GitHub repository mruby/mruby prior to 3.2. This vulnerability is capable of making the mruby interpreter crash, thus affecting the availability of the system.
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Medium 5.6
Null Pointer Dereference Caused Segmentation Fault in gpac/gpac
Null Pointer Dereference Caused Segmentation Fault in GitHub repository gpac/gpac prior to 2.1.0-DEV.
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Low 2.9
Segmentation Fault caused by MP4Box -lsr in gpac/gpac
Segmentation Fault caused by MP4Box -lsr in GitHub repository gpac/gpac prior to 2.1.0-DEV.
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Medium 5.5
Adobe Audition NULL Pointer Dereference Application denial-of-service
Adobe Audition version 14.4 (and earlier) is 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 o…
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Medium 5.5
Adobe Audition NULL Pointer Dereference Application denial-of-service
Adobe Audition version 14.4 (and earlier) is 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 o…