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)
-
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].
-
Requirements
Select a programming language that is not susceptible to these issues.
-
Implementation
Check the results of all functions that return a value and verify that the value is non-null before acting upon it.
-
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.
-
Implementation
Explicitly initialize all variables and other data stores, either during declaration or just before the first usage.
Source: MITRE CWE-476
1,548 results · Clear filters · Feed
-
Medium 5.5
iio: light: veml6030: fix IIO device retrieval from embedded device
In the Linux kernel, the following vulnerability has been resolved: iio: light: veml6030: fix IIO device retrieval from embedded device The dev pointer that is received as an argument in the in_illuminance_period_available_show function references the device …
-
Medium 5.5
ALSA: hda/cs8409: Fix possible NULL dereference
In the Linux kernel, the following vulnerability has been resolved: ALSA: hda/cs8409: Fix possible NULL dereference If snd_hda_gen_add_kctl fails to allocate memory and returns NULL, then NULL pointer dereference will occur in the next line. Since dolphin_fix…
-
Medium 5.5
drm/msm: Avoid NULL dereference in msm_disp_state_print_regs()
In the Linux kernel, the following vulnerability has been resolved: drm/msm: Avoid NULL dereference in msm_disp_state_print_regs() If the allocation in msm_disp_state_dump_regs() failed then `block->state` can be NULL. The msm_disp_state_print_regs() function…
-
Medium 5.5
scsi: target: core: Fix null-ptr-deref in target_alloc_device()
In the Linux kernel, the following vulnerability has been resolved: scsi: target: core: Fix null-ptr-deref in target_alloc_device() There is a null-ptr-deref issue reported by KASAN: BUG: KASAN: null-ptr-deref in target_alloc_device+0xbc4/0xbe0 [target_core_m…
-
Medium 5.5
net/mlx5: Fix command bitmask initialization
In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Fix command bitmask initialization Command bitmask have a dedicated bit for MANAGE_PAGES command, this bit isn't Initialize during command bitmask Initialization, only during MANAGE…
-
Medium 5.5
LoongArch: Don't crash in stack_top() for tasks without vDSO
In the Linux kernel, the following vulnerability has been resolved: LoongArch: Don't crash in stack_top() for tasks without vDSO Not all tasks have a vDSO mapped, for example kthreads never do. If such a task ever ends up calling stack_top(), it will derefenc…
-
Medium 5.5
PCI: Hold rescan lock while adding devices during host probe
In the Linux kernel, the following vulnerability has been resolved: PCI: Hold rescan lock while adding devices during host probe Since adding the PCI power control code, we may end up with a race between the pwrctl platform device rescanning the bus and host …
-
Medium 5.5
btrfs: reject ro->rw reconfiguration if there are hard ro requirements
In the Linux kernel, the following vulnerability has been resolved: btrfs: reject ro->rw reconfiguration if there are hard ro requirements [BUG] Syzbot reports the following crash: BTRFS info (device loop0 state MCS): disabling free space tree BTRFS info (dev…
-
Medium 5.5
md/raid10: fix null ptr dereference in raid10_size()
In the Linux kernel, the following vulnerability has been resolved: md/raid10: fix null ptr dereference in raid10_size() In raid10_run() if raid10_set_queue_limits() succeed, the return value is set to zero, and if following procedures failed raid10_run() wil…
-
Medium 5.5
ASoC: qcom: sc7280: Fix missing Soundwire runtime stream alloc
In the Linux kernel, the following vulnerability has been resolved: ASoC: qcom: sc7280: Fix missing Soundwire runtime stream alloc Commit 15c7fab0e047 ("ASoC: qcom: Move Soundwire runtime stream alloc to soundcards") moved the allocation of Soundwire stream r…
-
Medium 5.5
ASoC: qcom: sdm845: add missing soundwire runtime stream alloc
In the Linux kernel, the following vulnerability has been resolved: ASoC: qcom: sdm845: add missing soundwire runtime stream alloc During the migration of Soundwire runtime stream allocation from the Qualcomm Soundwire controller to SoC's soundcard drivers th…
-
Medium 6.5
Tenda i22 SysToo websReadEvent null pointer dereference
A vulnerability has been found in Tenda i22 1.0.0.3(4687) and classified as problematic. Affected by this vulnerability is the function websReadEvent of the file /goform/GetIPTV?fgHPOST/goform/SysToo. The manipulation of the argument Content-Length leads to n…
-
Medium 5.5
pinctrl: apple: check devm_kasprintf() returned value
In the Linux kernel, the following vulnerability has been resolved: pinctrl: apple: check devm_kasprintf() returned value devm_kasprintf() can return a NULL pointer on failure but this returned value is not checked. Fix this lack and check the returned value.…
-
Medium 6.5
Tenda AC6/AC7/AC8/AC9/AC10/AC10U/AC15/AC18/AC500/AC1206 GetIPTV websReadEvent null pointer dereference
A vulnerability was found in Tenda AC6, AC7, AC8, AC9, AC10, AC10U, AC15, AC18, AC500 and AC1206 up to 20241022. It has been rated as problematic. This issue affects the function websReadEvent of the file /goform/GetIPTV. The manipulation of the argument Cont…
-
Medium 5.3
Null Pointer Dereference in `coap_client_exchange_blockwise2` function in Keith Cullen FreeCoAP 1.0 allows remote attac…
-
Medium 5.5
Substance3D - Sampler | NULL Pointer Dereference (CWE-476)
Substance3D - Sampler versions 4.5 and earlier are affected by a NULL Pointer Dereference vulnerability that could lead to an application denial-of-service (DoS) condition. An attacker could exploit this vulnerability to crash the application, resulting in a …
-
Medium 5.3
CWE-476 NULL Pointer Dereference vulnerability in the evalExpr() function of GoAhead Web Server (version <= 6.0.0) when…
-
Medium 5.9
Multiple CWE-476 NULL Pointer Dereference vulnerabilities were found in GoAhead Web Server up to version 6.0.0 when com…
-
Medium 5.5
Junos OS: MX304, MX with MPC10/11/LC9600, and EX9200 with EX9200-15C: In a VPLS or Junos Fusion scenario specific show commands cause FPCs to crash
A NULL Pointer Dereference vulnerability in the packet forwarding engine (pfe) of Juniper Networks Junos OS on MX304, MX with MPC10/11/LC9600, and EX9200 with EX9200-15C allows a locally authenticated attacker with low privileges to cause a Denial of Service …
-
Medium 5.5
Junos OS: MX Series: The PFE will crash on running specific command
A NULL Pointer Dereference vulnerability in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS allows a local, low-privileged attacker to cause a Denial-of-Service (DoS). When a specific command is executed, the pfe crashes. This will cause traff…
-
Medium 5.1
An attacker who successfully exploited these vulnerabilities could cause the robot to stop. A vulnerability exists in t…
-
Medium 6.5
Windows Mobile Broadband Driver Denial of Service Vulnerability
Windows Mobile Broadband Driver Denial of Service Vulnerability
-
Medium 6.2
NULL pointer dereference in IP socket options processing of the Networking Stack in QNX Software Development Platform (…
-
Medium 5.0
Windows Kernel Denial of Service Vulnerability
Windows Kernel Denial of Service Vulnerability
-
Medium 5.1
An null-pointer-derefrence in the engine module in AVG/Avast Antivirus signature <24092400 released on 24/Sep/2024 on M…
-
Medium 5.1
Uninitialized variable in digital signiture verification may crash the application
A null-pointer-dereference in the signature verification module in AVG/Avast Antivirus signature <24092400 released on 24/Sep/2024 on MacOS may allow a malformed xar file to crash the application during processing.
-
Medium 5.3
PLANET Technology switch devices - Swctrl service DoS attack
The swctrl service is used to detect and remotely manage PLANET Technology devices. Certain switch models have a Denial-of-Service vulnerability in the swctrl service, allowing unauthenticated remote attackers to send crafted packets that can crash the servic…
-
Medium 5.5
Input validation vulnerability in the USB service module Impact: Successful exploitation of this vulnerability may affe…
-
Medium 4.7
NULL pointer dereference in Intel(R) RAID Web Console software for all versions may allow an authenticated user to pote…
-
Medium 5.5
Illustrator | NULL Pointer Dereference (CWE-476)
Illustrator versions 28.6, 27.9.5 and earlier are affected by a NULL Pointer Dereference vulnerability that could lead to an application denial-of-service (DoS). An attacker could exploit this vulnerability to crash the application, resulting in a DoS conditi…
-
Medium 5.9
A vulnerability has been identified in SIMATIC CP 1242-7 V2 (incl. SIPLUS variants) (All versions < V3.5.20), SIMATIC C…
-
Medium 4.4
A vulnerability has been identified in SIMATIC CP 1242-7 V2 (incl. SIPLUS variants) (All versions < V3.5.20), SIMATIC C…
-
Medium 5.9
A vulnerability has been identified in SIMATIC CP 1242-7 V2 (incl. SIPLUS variants) (All versions < V3.5.20), SIMATIC C…
-
Medium 5.9
An issue was discovered in Samsung Semiconductor Mobile Processor and Modem Exynos 9820, Exynos 9825, Exynos 980, Exyno…
-
Medium 5.4
QTS, QuTS hero
A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow users to launch a denial-of-service (DoS) attack via a network. We have already fixed the vulnerability in…
-
Medium 5.7
A malformed Contact or Record-Route URI in an incoming SIP request can cause Asterisk to crash when res_resolver_unbound is used
Asterisk is an open-source private branch exchange (PBX). Prior to versions 18.24.3, 20.9.3, and 21.4.3 of Asterisk and versions 18.9-cert12 and 20.7-cert2 of certified-asterisk, if Asterisk attempts to send a SIP request to a URI whose host portion starts wi…
-
Medium 4.4
NULL pointer dereference in libpcap before 1.10.5 with remote packet capture support
Remote packet capture support is disabled by default in libpcap. When a user builds libpcap with remote packet capture support enabled, one of the functions that become available is pcap_findalldevs_ex(). One of the function arguments can be a filesystem path…
-
Medium 6.2
Libvirt: crash of virtinterfaced via virconnectlistinterfaces()
A flaw was found in libvirt. A refactor of the code fetching the list of interfaces for multiple APIs introduced a corner case on platforms where allocating 0 bytes of memory results in a NULL pointer. This corner case would lead to a NULL-pointer dereference…
-
Medium 5.5
net: arcnet: com20020: Fix null-ptr-deref in com20020pci_probe()
In the Linux kernel, the following vulnerability has been resolved: net: arcnet: com20020: Fix null-ptr-deref in com20020pci_probe() During driver initialization, the pointer of card info, i.e. the variable 'ci' is required. However, the definition of 'com200…
-
Medium 5.5
Adobe Indesign 2024 DOC File Parsing Null Pointer Dereference
InDesign Desktop versions ID19.4, ID18.5.2 and earlier are affected by a NULL Pointer Dereference vulnerability that could lead to an application denial-of-service (DoS). An attacker could exploit this vulnerability to crash the application, resulting in a de…