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
1,548 results · Clear filters · Feed
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Medium 5.5
drm: xlnx: zynqmp_disp: layer may be null while releasing
In the Linux kernel, the following vulnerability has been resolved: drm: xlnx: zynqmp_disp: layer may be null while releasing layer->info can be null if we have an error on the first layer in zynqmp_disp_create_layers
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Medium 5.5
wifi: cw1200: Fix potential NULL dereference
In the Linux kernel, the following vulnerability has been resolved: wifi: cw1200: Fix potential NULL dereference A recent refactoring was identified by static analysis to cause a potential NULL dereference, fix this!
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Medium 5.5
wifi: rtw89: coex: check NULL return of kmalloc in btc_fw_set_monreg()
In the Linux kernel, the following vulnerability has been resolved: wifi: rtw89: coex: check NULL return of kmalloc in btc_fw_set_monreg() kmalloc may fail, return value might be NULL and will cause NULL pointer dereference. Add check NULL return of kmalloc i…
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Medium 5.5
Bluetooth: btmtk: adjust the position to init iso data anchor
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btmtk: adjust the position to init iso data anchor MediaTek iso data anchor init should be moved to where MediaTek claims iso data interface. If there is an unexpected BT usb disco…
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Medium 5.5
erofs: fix file-backed mounts over FUSE
In the Linux kernel, the following vulnerability has been resolved: erofs: fix file-backed mounts over FUSE syzbot reported a null-ptr-deref in fuse_read_args_fill: fuse_read_folio+0xb0/0x100 fs/fuse/file.c:905 filemap_read_folio+0xc6/0x2a0 mm/filemap.c:2367 …
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Medium 5.5
unicode: Fix utf8_load() error path
In the Linux kernel, the following vulnerability has been resolved: unicode: Fix utf8_load() error path utf8_load() requests the symbol "utf8_data_table" and then checks if the requested UTF-8 version is supported. If it's unsupported, it tries to put the dat…
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Medium 5.5
cpufreq: CPPC: Fix possible null-ptr-deref for cpufreq_cpu_get_raw()
In the Linux kernel, the following vulnerability has been resolved: cpufreq: CPPC: Fix possible null-ptr-deref for cpufreq_cpu_get_raw() cpufreq_cpu_get_raw() may return NULL if the cpu is not in policy->cpus cpu mask and it will cause null pointer dereferenc…
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Medium 5.5
cpufreq: CPPC: Fix possible null-ptr-deref for cppc_get_cpu_cost()
In the Linux kernel, the following vulnerability has been resolved: cpufreq: CPPC: Fix possible null-ptr-deref for cppc_get_cpu_cost() cpufreq_cpu_get_raw() may return NULL if the cpu is not in policy->cpus cpu mask and it will cause null pointer dereference,…
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Medium 5.5
drm/amd/display: Fix null check for pipe_ctx->plane_state in hwss_setup_dpp
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix null check for pipe_ctx->plane_state in hwss_setup_dpp This commit addresses a null pointer dereference issue in hwss_setup_dpp(). The issue could occur when pipe_ctx->pl…
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Medium 5.5
drm/amd/display: Fix null check for pipe_ctx->plane_state in dcn20_program_pipe
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix null check for pipe_ctx->plane_state in dcn20_program_pipe This commit addresses a null pointer dereference issue in dcn20_program_pipe(). Previously, commit 8e4ed3cf1642…
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Medium 5.5
ASoC: imx-audmix: Add NULL check in imx_audmix_probe
In the Linux kernel, the following vulnerability has been resolved: ASoC: imx-audmix: Add NULL check in imx_audmix_probe devm_kasprintf() can return a NULL pointer on failure,but this returned value in imx_audmix_probe() is not checked. Add NULL check in imx_…
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Medium 5.5
ALSA: pcm: Add sanity NULL check for the default mmap fault handler
In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Add sanity NULL check for the default mmap fault handler A driver might allow the mmap access before initializing its runtime->dma_area properly. Add a proper NULL check before pas…
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Medium 5.3
There is a NULL pointer dereference vulnerability in some Huawei products. An attacker may send specially crafted POST …
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Medium 5.5
firmware: arm_scpi: Check the DVFS OPP count returned by the firmware
In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scpi: Check the DVFS OPP count returned by the firmware Fix a kernel crash with the below call trace when the SCPI firmware returns OPP count of zero. dvfs_info.opp_count may be…
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Medium 5.5
clk: clk-apple-nco: Add NULL check in applnco_probe
In the Linux kernel, the following vulnerability has been resolved: clk: clk-apple-nco: Add NULL check in applnco_probe Add NULL check in applnco_probe, to handle kernel NULL pointer dereference error.
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Medium 6.9
Null Pointer Dereference
Team ENVY, a Security Research TEAM has found a flaw that allows for a remote code execution on the NVR . An attacker enters a special value for a specific URL parameter, resulting in a NULL pointer reference and a reboot of the NVR. The manufacturer has rele…
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Medium 6.9
Null Pointer Dereference
Team ENVY, a Security Research TEAM has found a flaw that allows for a remote code execution on the NVR. If an attacker does not enter any value for a specific URL parameter, NULL pointer references will occur and the NVR will reboot. The manufacturer has rel…
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Medium 5.5
Acrobat Reader | NULL Pointer Dereference (CWE-476)
Adobe Acrobat Reader versions 22.003.20282 (and earlier), 22.003.20281 (and earlier) and 20.005.30418 (and earlier) are affected by a NULL Pointer Dereference vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve an applicati…
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Medium 5.0
An access violation vulnerability exists in the DirectComposition functionality win32kbase.sys driver version 10.0.2200…
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Medium 5.0
An access violation vulnerability exists in the DirectComposition functionality win32kbase.sys driver version 10.0.2200…
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Medium 5.3
A NULL pointer dereference in the plugins_call_handle_uri_clean function of D-Link DAP-1520 REVA_FIRMWARE_1.10B04_BETA0…
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Medium 6.5
A NULL pointer dereference in D-Link DIR-860L REVB_FIRMWARE_2.04.B04_ic5b allows attackers to cause a Denial of Service…
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Medium 5.5
IObit Advanced SystemCare Utimate IOCTL AscRegistryFilter.sys 0x8001E040 null pointer dereference
A vulnerability classified as problematic has been found in IObit Advanced SystemCare Utimate up to 17.0.0. This affects the function 0x8001E040 in the library AscRegistryFilter.sys of the component IOCTL Handler. The manipulation leads to null pointer derefe…
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Medium 5.5
IObit Advanced SystemCare Utimate IOCTL AscRegistryFilter.sys 0x8001E024 null pointer dereference
A vulnerability was found in IObit Advanced SystemCare Utimate up to 17.0.0. It has been rated as problematic. Affected by this issue is the function 0x8001E024 in the library AscRegistryFilter.sys of the component IOCTL Handler. The manipulation leads to nul…
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Medium 5.5
IObit Advanced SystemCare Utimate IOCTL AscRegistryFilter.sys 0x8001E018 null pointer dereference
A vulnerability was found in IObit Advanced SystemCare Utimate up to 17.0.0. It has been declared as problematic. Affected by this vulnerability is the function 0x8001E018 in the library AscRegistryFilter.sys of the component IOCTL Handler. The manipulation l…
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Medium 5.5
IObit Advanced SystemCare Utimate IOCTL AscRegistryFilter.sys 0x8001E004 null pointer dereference
A vulnerability was found in IObit Advanced SystemCare Utimate up to 17.0.0. It has been classified as problematic. Affected is the function 0x8001E004 in the library AscRegistryFilter.sys of the component IOCTL Handler. The manipulation leads to null pointer…
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Medium 5.5
IObit Advanced SystemCare Utimate IOCTL AscRegistryFilter.sys 0x8001E01C null pointer dereference
A vulnerability was found in IObit Advanced SystemCare Utimate up to 17.0.0 and classified as problematic. This issue affects the function 0x8001E01C in the library AscRegistryFilter.sys of the component IOCTL Handler. The manipulation leads to null pointer d…
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Medium 5.5
IObit Advanced SystemCare Utimate IOCTL AscRegistryFilter.sys 0x8001E000 null pointer dereference
A vulnerability has been found in IObit Advanced SystemCare Utimate up to 17.0.0 and classified as problematic. This vulnerability affects the function 0x8001E000 in the library AscRegistryFilter.sys of the component IOCTL Handler. The manipulation leads to n…
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Medium 5.5
FabulaTech USB over Network IOCT ftusbbus2.sys 0x220448 null pointer dereference
A vulnerability, which was classified as problematic, was found in FabulaTech USB over Network 6.0.6.1. This affects the function 0x220448 in the library ftusbbus2.sys of the component IOCT Handler. The manipulation leads to null pointer dereference. The atta…
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Medium 5.5
FabulaTech USB over Network IOCT ftusbbus2.sys 0x220420 null pointer dereference
A vulnerability, which was classified as problematic, has been found in FabulaTech USB over Network 6.0.6.1. Affected by this issue is the function 0x220420 in the library ftusbbus2.sys of the component IOCT Handler. The manipulation leads to null pointer der…
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Medium 5.5
FabulaTech USB over Network IOCT ftusbbus2.sys 0x220408 null pointer dereference
A vulnerability classified as problematic was found in FabulaTech USB over Network 6.0.6.1. Affected by this vulnerability is the function 0x220408 in the library ftusbbus2.sys of the component IOCT Handler. The manipulation leads to null pointer dereference.…
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Medium 5.5
FabulaTech USB over Network IOCT ftusbbus2.sys 0x22040C null pointer dereference
A vulnerability classified as problematic has been found in FabulaTech USB over Network 6.0.6.1. Affected is the function 0x22040C in the library ftusbbus2.sys of the component IOCT Handler. The manipulation leads to null pointer dereference. Local access is …
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Medium 6.8
GHSL-2024-263: Gstreamer NULL-pointer dereference in LRC subtitle parser
GStreamer is a library for constructing graphs of media-handling components. A null pointer dereference vulnerability has been detected in the parse_lrc function within gstsubparse.c. The parse_lrc function calls strchr() to find the character ']' in the stri…
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Medium 6.8
GHSL-2024-251: GStreamer NULL-pointer dereference in Matroska/WebM demuxer
GStreamer is a library for constructing graphs of media-handling components. A null pointer dereference vulnerability has been discovered in the gst_matroska_demux_update_tracks function within matroska-demux.c. The vulnerability occurs when the gst_caps_is_e…
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Medium 6.8
GHSL-2024-250: Streamer NULL-pointer dereferences and out-of-bounds reads in Matroska/WebM demuxer
GStreamer is a library for constructing graphs of media-handling components. A null pointer dereference vulnerability has been discovered in the gst_matroska_demux_add_wvpk_header function within matroska-demux.c. This function does not properly check the val…
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Medium 6.8
GHSL-2024-249: GStreamer has a NULL-pointer dereference in Matroska/WebM demuxer
GStreamer is a library for constructing graphs of media-handling components. A null pointer dereference vulnerability has been discovered in the gst_matroska_demux_parse_blockgroup_or_simpleblock function within matroska-demux.c. This function does not proper…
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Medium 6.8
GHSL-2024-247: GStreamer Insufficient error handling in JPEG decoder that can lead to NULL-pointer dereferences
GStreamer is a library for constructing graphs of media-handling components. A null pointer dereference vulnerability has been discovered in the gst_jpeg_dec_negotiate function in gstjpegdec.c. This function does not check for a NULL return value from gst_vid…
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Medium 6.8
GHSL-2024-238: GStreamer has NULL-pointer dereferences in MP4/MOV demuxer CENC handling
GStreamer is a library for constructing graphs of media-handling components. The function qtdemux_parse_sbgp in qtdemux.c is affected by a null dereference vulnerability. This vulnerability is fixed in 1.24.10.
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Medium 6.8
GHSL-2024-235: GStreamer ID3v2 parser out-of-bounds read and NULL-pointer dereference
GStreamer is a library for constructing graphs of media-handling components. A null pointer dereference has been discovered in the id3v2_read_synch_uint function, located in id3v2.c. If id3v2_read_synch_uint is called with a null work->hdr.frame_data, the poi…
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Medium 5.5
Substance3D - Modeler | NULL Pointer Dereference (CWE-476)
Substance3D - Modeler versions 1.14.1 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-ser…