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CWE-476

5,856 CVEs • Abstraction: Base • Likelihood of Exploit: Medium

NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

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CVEs (5,856)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
1Imagemagick
1Imagemagick
Nov 21, 2024
Mar 1, 2018
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
In ImageMagick 7.0.7, a NULL pointer dereference vulnerability was found in the function BenchmarkOpenCLDevices in MagickCore/opencl.c because a memory allocation result is not checked.
2Canonical
Imagemagick
2Imagemagick
Ubuntu Linux
Nov 21, 2024
Mar 1, 2018
N/A· v4
8.8 HIGH· v3
6.8 MEDIUM· v2
In the GetOpenCLCachedFilesDirectory function in magick/opencl.c in ImageMagick 7.0.7, a NULL pointer dereference vulnerability occurs because a memory allocation result is not checked, related to GetOpenCLCacheDirectory...Show more
In the GetOpenCLCachedFilesDirectory function in magick/opencl.c in ImageMagick 7.0.7, a NULL pointer dereference vulnerability occurs because a memory allocation result is not checked, related to GetOpenCLCacheDirectory.Show less
1Apache
1Xerces C++
Nov 21, 2024
Mar 1, 2018
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
In Apache Xerces-C XML Parser library before 3.2.1, processing of external DTD paths can result in a null pointer dereference under certain conditions.
1Gnu
1Binutils
Jun 17, 2026
Feb 28, 2018
N/A· v4
5.5 MEDIUM· v3
4.3 MEDIUM· v2
The assign_file_positions_for_non_load_sections function in elf.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.30, allows remote attackers to cause a denial of service (NULL...Show more
The assign_file_positions_for_non_load_sections function in elf.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.30, allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an ELF file with a RELRO segment that lacks a matching LOAD segment, as demonstrated by objcopy.Show less
2Canonical
Zsh
2Ubuntu Linux
Zsh
Jun 17, 2026
Feb 27, 2018
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
In subst.c in zsh through 5.4.2, there is a NULL pointer dereference when using ${(PA)...} on an empty array result.
1Zsh Project
1Zsh
Nov 21, 2024
Feb 27, 2018
N/A· v4
8.1 HIGH· v3
6.8 MEDIUM· v2
In builtin.c in zsh before 5.4, when sh compatibility mode is used, there is a NULL pointer dereference during processing of the cd command with no argument if HOME is not set.
2Debian
Xen
2Debian Linux
Xen
Jun 17, 2026
Feb 27, 2018
N/A· v4
6.5 MEDIUM· v3
4.9 MEDIUM· v2
An issue was discovered in Xen 4.8.x through 4.10.x allowing x86 PVH guest OS users to cause a denial of service (NULL pointer dereference and hypervisor crash) by leveraging the mishandling of configurations that lack a...Show more
An issue was discovered in Xen 4.8.x through 4.10.x allowing x86 PVH guest OS users to cause a denial of service (NULL pointer dereference and hypervisor crash) by leveraging the mishandling of configurations that lack a Local APIC.Show less
1Icinga
1Icinga
Jun 17, 2026
Feb 27, 2018
N/A· v4
6.5 MEDIUM· v3
4.3 MEDIUM· v2
An issue was discovered in Icinga 2.x through 2.8.1. By sending specially crafted messages, an attacker can cause a NULL pointer dereference, which can cause the product to crash.
3Canonical
DebianLinux
3Debian Linux
Linux KernelUbuntu Linux
Jun 17, 2026
Feb 26, 2018
N/A· v4
5.5 MEDIUM· v3
4.9 MEDIUM· v2
A NULL pointer dereference was found in the net/rds/rdma.c __rds_rdma_map() function in the Linux kernel before 4.14.7 allowing local attackers to cause a system panic and a denial-of-service, related to RDS_GET_MR and R...Show more
A NULL pointer dereference was found in the net/rds/rdma.c __rds_rdma_map() function in the Linux kernel before 4.14.7 allowing local attackers to cause a system panic and a denial-of-service, related to RDS_GET_MR and RDS_GET_MR_FOR_DEST.Show less
3Canonical
DebianLibtiff
3Debian Linux
LibtiffUbuntu Linux
Jun 17, 2026
Feb 24, 2018
N/A· v4
6.5 MEDIUM· v3
4.3 MEDIUM· v2
A NULL Pointer Dereference occurs in the function TIFFPrintDirectory in tif_print.c in LibTIFF 3.9.3, 3.9.4, 3.9.5, 3.9.6, 3.9.7, 4.0.0alpha4, 4.0.0alpha5, 4.0.0alpha6, 4.0.0beta7, 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0....Show more
A NULL Pointer Dereference occurs in the function TIFFPrintDirectory in tif_print.c in LibTIFF 3.9.3, 3.9.4, 3.9.5, 3.9.6, 3.9.7, 4.0.0alpha4, 4.0.0alpha5, 4.0.0alpha6, 4.0.0beta7, 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.4beta, 4.0.5, 4.0.6, 4.0.7, 4.0.8 and 4.0.9 when using the tiffinfo tool to print crafted TIFF information, a different vulnerability than CVE-2017-18013. (This affects an earlier part of the TIFFPrintDirectory function that was not addressed by the CVE-2017-18013 patch.)Show less
1Xpdfreader
1Xpdf
Jun 17, 2026
Feb 24, 2018
N/A· v4
5.5 MEDIUM· v3
4.3 MEDIUM· v2
A NULL pointer dereference in XFAForm::scanFields in XFAForm.cc in xpdf 4.00 allows attackers to launch denial of service via a specific pdf file, as demonstrated by pdftohtml.
1Xpdfreader
1Xpdf
Jun 17, 2026
Feb 24, 2018
N/A· v4
5.5 MEDIUM· v3
4.3 MEDIUM· v2
A NULL pointer dereference in JPXStream::fillReadBuf in JPXStream.cc in xpdf 4.00 allows attackers to launch denial of service via a specific pdf file, as demonstrated by pdftohtml.
1Gnu
1Libcdio
Nov 21, 2024
Feb 24, 2018
N/A· v4
6.5 MEDIUM· v3
4.3 MEDIUM· v2
realloc_symlink in rock.c in GNU libcdio before 1.0.0 allows remote attackers to cause a denial of service (NULL Pointer Dereference) via a crafted iso file.
2Debian
Wireshark
2Debian Linux
Wireshark
Jun 17, 2026
Feb 23, 2018
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, the FCP protocol dissector could crash. This was addressed in epan/dissectors/packet-fcp.c by checking for a NULL pointer.
1Digium
1Asterisk
Jun 17, 2026
Feb 22, 2018
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
A NULL pointer access issue was discovered in Asterisk 15.x through 15.2.1. The RTP support in Asterisk maintains its own registry of dynamic codecs and desired payload numbers. While an SDP negotiation may result in a c...Show more
A NULL pointer access issue was discovered in Asterisk 15.x through 15.2.1. The RTP support in Asterisk maintains its own registry of dynamic codecs and desired payload numbers. While an SDP negotiation may result in a codec using a different payload number, these desired ones are still stored internally. When an RTP packet was received, this registry would be consulted if the payload number was not found in the negotiated SDP. This registry was incorrectly consulted for all packets, even those which are dynamic. If the payload number resulted in a codec of a different type than the RTP stream (for example, the payload number resulted in a video codec but the stream carried audio), a crash could occur if no stream of that type had been negotiated. This was due to the code incorrectly assuming that a stream of that type would always exist.Show less
2Debian
W1.fi
2Debian Linux
Wpa Supplicant
Nov 21, 2024
Feb 21, 2018
N/A· v4
5.9 MEDIUM· v3
4.3 MEDIUM· v2
The eap_pwd_perform_confirm_exchange function in eap_peer/eap_pwd.c in wpa_supplicant 2.x before 2.6, when EAP-pwd is enabled in a network configuration profile, allows remote attackers to cause a denial of service (NULL...Show more
The eap_pwd_perform_confirm_exchange function in eap_peer/eap_pwd.c in wpa_supplicant 2.x before 2.6, when EAP-pwd is enabled in a network configuration profile, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via an EAP-pwd Confirm message followed by the Identity exchange.Show less
1Atlassian
1Floodlight
Nov 21, 2024
Feb 21, 2018
N/A· v4
5.9 MEDIUM· v3
4.3 MEDIUM· v2
Race condition in the LoadBalancer module in the Atlassian Floodlight Controller before 1.2 allows remote attackers to cause a denial of service (NULL pointer dereference and thread crash) via a state manipulation attack...Show more
Race condition in the LoadBalancer module in the Atlassian Floodlight Controller before 1.2 allows remote attackers to cause a denial of service (NULL pointer dereference and thread crash) via a state manipulation attack.Show less
1Hp
1System Management Homepage
Nov 21, 2024
Feb 15, 2018
N/A· v4
7.5 HIGH· v3
7.8 HIGH· v2
A remote denial of service vulnerability in HPE System Management Homepage for Windows and Linux version prior to v7.6.1 was found.
1Xpdfreader
1Xpdf
Jun 17, 2026
Feb 15, 2018
N/A· v4
5.5 MEDIUM· v3
4.3 MEDIUM· v2
An issue was discovered in xpdf 4.00. A NULL pointer dereference in readCodestream allows an attacker to cause denial of service via a JPX image with zero components.
3Canonical
DebianIrssi
3Debian Linux
IrssiUbuntu Linux
Jun 17, 2026
Feb 15, 2018
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
An issue was discovered in Irssi before 1.0.7 and 1.1.x before 1.1.1. When the number of windows exceeds the available space, a crash due to a NULL pointer dereference would occur.