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
2,669 results · Feed
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Critical 9.2
Segmentation Fault in `forwardBundle` Function of ION-DTN BPv7 When Destination EID is `dtn:none` (public)
The NASA’s Interplanetary Overlay Network (ION) is an implementation of Delay/Disruption Tolerant Networking (DTN). A segmentation fault occurs with ION-DTN BPv7 software version 4.1.3 when a bundle with a Destination Endpoint ID (EID) set to dtn:none is rece…
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Medium 5.5CVE-2024-12227 Public exploit
MSI Dragon Center IOCTL NTIOLib_X64.sys MmUnMapIoSpace null pointer dereference
A vulnerability, which was classified as problematic, was found in MSI Dragon Center up to 2.0.146.0. This affects the function MmUnMapIoSpace in the library NTIOLib_X64.sys of the component IOCTL Handler. The manipulation leads to null pointer dereference. I…
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Medium 5.3
Lorex 2K Indoor Wi-Fi Security Camera - Null pointer dereference
An unauthenticated attacker can perform a null pointer dereference in the DHIP Service (UDP port 37810). This vulnerability has been resolved in firmware version 2.800.0000000.8.R.20241111.
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Medium 5.5
drm/vmwgfx: avoid null_ptr_deref in vmw_framebuffer_surface_create_handle
In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: avoid null_ptr_deref in vmw_framebuffer_surface_create_handle The 'vmw_user_object_buffer' function may return NULL with incorrect inputs. To avoid possible null pointer dereferen…
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Medium 4.3
Tenda FH451/FH1201/FH1202/FH1206 GetIPTV websReadEvent null pointer dereference
A vulnerability classified as problematic was found in Tenda FH451, FH1201, FH1202 and FH1206 up to 20241129. Affected by this vulnerability is the function websReadEvent of the file /goform/GetIPTV. The manipulation of the argument Content-Length leads to nu…
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Medium 5.3
In prestashop 8.1.4, a NULL pointer dereference was identified in the math_round function within Tools.php.
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Medium 6.5
NULL Pointer Dereference on moby image history
moby v25.0.0 - v26.0.2 is vulnerable to NULL Pointer Dereference via daemon/images/image_history.go.
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Low 3.3
JS - Crash on unexpected HTTP server response
The webdriver for the Browser object expects an error object to be initialized when the webdriver_session_query function fails. But this function can fail for various reasons without an error description and then the wd->error will be NULL and trying to read …
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Low 3.3
JS - Crash on empty HTTP server response
When the webdriver for the Browser object downloads data from a HTTP server, the data pointer is set to NULL and is allocated only in curl_write_cb when receiving data. If the server's response is an empty document, then wd->data in the code below will remain…
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Critical 9.1
`NSC_DeriveKey` inadvertently assumed that the `phKey` parameter is always non-NULL. When it was passed as NULL, a segm…
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Medium 6.5
A null pointer dereference may have inadvertently occurred in `pk12util`, and specifically in the `SEC_ASN1DecodeItem_U…
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Medium 6.5
Tenda i9 GetIPTV websReadEvent null pointer dereference
A vulnerability was found in Tenda i9 1.0.0.8(3828) and classified as critical. This issue affects the function websReadEvent of the file /goform/GetIPTV. The manipulation leads to null pointer dereference. The attack may be initiated remotely. The exploit ha…
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Medium 5.1
QTS, QuTS hero
A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow remote attackers who have gained administrator access to launch a denial-of-service (DoS) attack. We have …
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Medium 5.1
QTS, QuTS hero
A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow remote attackers who have gained administrator access to launch a denial-of-service (DoS) attack. We have …
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Medium 5.1
QTS, QuTS hero
A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow remote attackers who have gained administrator access to launch a denial-of-service (DoS) attack. We have …
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High 8.4
virtio_pci: Fix admin vq cleanup by using correct info pointer
In the Linux kernel, the following vulnerability has been resolved: virtio_pci: Fix admin vq cleanup by using correct info pointer vp_modern_avq_cleanup() and vp_del_vqs() clean up admin vq resources by virtio_pci_vq_info pointer. The info pointer of admin vq…
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Low 3.5
AVL-DiTEST-DiagDev libdoip DoIPConnection.cpp reactOnReceivedTcpMessage null pointer dereference
A vulnerability was found in AVL-DiTEST-DiagDev libdoip 1.0.0. It has been rated as problematic. This issue affects the function DoIPConnection::reactOnReceivedTcpMessage of the file DoIPConnection.cpp. The manipulation leads to null pointer dereference.
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Medium 5.5
firmware: qcom: scm: fix a NULL-pointer dereference
In the Linux kernel, the following vulnerability has been resolved: firmware: qcom: scm: fix a NULL-pointer dereference Some SCM calls can be invoked with __scm being NULL (the driver may not have been and will not be probed as there's no SCM entry in device-…
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Medium 5.5
idpf: fix idpf_vc_core_init error path
In the Linux kernel, the following vulnerability has been resolved: idpf: fix idpf_vc_core_init error path In an event where the platform running the device control plane is rebooted, reset is detected on the driver. It releases all the resources and waits fo…
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Medium 5.5
drm/amdgpu: prevent NULL pointer dereference if ATIF is not supported
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: prevent NULL pointer dereference if ATIF is not supported acpi_evaluate_object() may return AE_NOT_FOUND (failure), which would result in dereferencing buffer.pointer (obj) while …
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Medium 5.5
drm/mediatek: Fix potential NULL dereference in mtk_crtc_destroy()
In the Linux kernel, the following vulnerability has been resolved: drm/mediatek: Fix potential NULL dereference in mtk_crtc_destroy() In mtk_crtc_create(), if the call to mbox_request_channel() fails then we set the "mtk_crtc->cmdq_client.chan" pointer to NU…
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Medium 5.5
drm/i915/hdcp: Add encoder check in hdcp2_get_capability
In the Linux kernel, the following vulnerability has been resolved: drm/i915/hdcp: Add encoder check in hdcp2_get_capability Add encoder check in intel_hdcp2_get_capability to avoid null pointer error.
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Medium 5.5
mctp i2c: handle NULL header address
In the Linux kernel, the following vulnerability has been resolved: mctp i2c: handle NULL header address daddr can be NULL if there is no neighbour table entry present, in that case the tx packet should be dropped. saddr will usually be set by MCTP core, but …
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Medium 5.5
net: enetc: allocate vf_state during PF probes
In the Linux kernel, the following vulnerability has been resolved: net: enetc: allocate vf_state during PF probes In the previous implementation, vf_state is allocated memory only when VF is enabled. However, net_device_ops::ndo_set_vf_mac() may be called be…
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Medium 5.5
net: hns3: fix kernel crash when uninstalling driver
In the Linux kernel, the following vulnerability has been resolved: net: hns3: fix kernel crash when uninstalling driver When the driver is uninstalled and the VF is disabled concurrently, a kernel crash occurs. The reason is that the two actions call functio…
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Medium 5.5
ASoC: stm32: spdifrx: fix dma channel release in stm32_spdifrx_remove
In the Linux kernel, the following vulnerability has been resolved: ASoC: stm32: spdifrx: fix dma channel release in stm32_spdifrx_remove In case of error when requesting ctrl_chan DMA channel, ctrl_chan is not null. So the release of the dma channel leads to…
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High 7.8
KEYS: trusted: dcp: fix NULL dereference in AEAD crypto operation
In the Linux kernel, the following vulnerability has been resolved: KEYS: trusted: dcp: fix NULL dereference in AEAD crypto operation When sealing or unsealing a key blob we currently do not wait for the AEAD cipher operation to finish and simply return after…
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Medium 4.7
dm: fix a crash if blk_alloc_disk fails
In the Linux kernel, the following vulnerability has been resolved: dm: fix a crash if blk_alloc_disk fails If blk_alloc_disk fails, the variable md->disk is set to an error value. cleanup_mapped_device will see that md->disk is non-NULL and it will attempt t…
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Medium 5.5
ocfs2: remove entry once instead of null-ptr-dereference in ocfs2_xa_remove()
In the Linux kernel, the following vulnerability has been resolved: ocfs2: remove entry once instead of null-ptr-dereference in ocfs2_xa_remove() Syzkaller is able to provoke null-ptr-dereference in ocfs2_xa_remove(): [ 57.319872] (a.out,1161,7):ocfs2_xa_remo…
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Medium 5.5
A NULL pointer dereference in the component libPdfCore.dll of Wondershare PDF Reader v1.0.9.2544 allows attackers to ca…
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High 7.7
Kube-controller-manager: malformed hpa v1 manifest causes crash
A flaw was found in kube-controller-manager. This issue occurs when the initial application of a HPA config YAML lacking a .spec.behavior.scaleUp block causes a denial of service due to KCM pods going into restart churn.
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Medium 6.5
An uninitialized pointer dereference in OpenAirInterface CN5G AMF up to v2.0.0 allows attackers to cause a Denial of Se…
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High 7.5
NULL pointer dereference in the MMS Client in MZ Automation LibIEC1850 before commit 7afa40390b26ad1f4cf93deaa0052fe7e3…
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High 8.7
PAN-OS: Firewall Denial of Service (DoS) in GlobalProtect Gateway Using a Specially Crafted Packet
A null pointer dereference vulnerability in the GlobalProtect gateway in Palo Alto Networks PAN-OS software enables an unauthenticated attacker to stop the GlobalProtect service on the firewall by sending a specially crafted packet that causes a denial of ser…
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High 8.7
PAN-OS: Firewall Denial of Service (DoS) Using a Specially Crafted Packet
A null pointer dereference vulnerability in Palo Alto Networks PAN-OS software enables an unauthenticated attacker to stop a core system service on the firewall by sending a crafted packet through the data plane that causes a denial of service (DoS) condition…
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High 8.7
PAN-OS: Firewall Denial of Service (DoS) Using Specially Crafted Traffic
A null pointer dereference in Palo Alto Networks PAN-OS software on PA-800 Series, PA-3200 Series, PA-5200 Series, and PA-7000 Series hardware platforms when Decryption policy is enabled allows an unauthenticated attacker to crash PAN-OS by sending specific t…
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Medium 5.5
Substance3D - Painter | NULL Pointer Dereference (CWE-476)
Substance3D - Painter versions 10.1.0 and earlier are affected by a NULL Pointer Dereference vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denial-of-ser…
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Medium 5.5
Illustrator | NULL Pointer Dereference (CWE-476)
Illustrator versions 28.7.1 and earlier are affected by a NULL Pointer Dereference vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denial-of-service condi…
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Medium 5.5
Bridge | NULL Pointer Dereference (CWE-476)
Bridge versions 13.0.9, 14.1.2 and earlier are affected by a NULL Pointer Dereference vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denial of service co…
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High 7.5
A null pointer dereference in Ivanti Connect Secure before version 22.7R2.1 and Ivanti Policy Secure before version 22.…