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CWE-476

5,434 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 (5,434)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
2Redhat
Tigervnc
5Enterprise Linux Desktop
Enterprise Linux Hpc NodeEnterprise Linux Server+2 more
May 6, 2026
Dec 14, 2016
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
XRegion in TigerVNC allows remote VNC servers to cause a denial of service (NULL pointer dereference) by leveraging failure to check a malloc return value, a similar issue to CVE-2014-6052.
2Imagemagick
Oracle
2Imagemagick
Solaris
May 6, 2026
Dec 13, 2016
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
The ReadDCMImage function in DCM reader in ImageMagick before 6.9.4-5 and 7.x before 7.0.1-7 allows remote attackers to have unspecified impact via vectors involving the for statement in computing the pixel scaling table...Show more
The ReadDCMImage function in DCM reader in ImageMagick before 6.9.4-5 and 7.x before 7.0.1-7 allows remote attackers to have unspecified impact via vectors involving the for statement in computing the pixel scaling table.Show less
2Imagemagick
Oracle
2Imagemagick
Solaris
May 6, 2026
Dec 13, 2016
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
The DCM reader in ImageMagick before 6.9.4-5 and 7.x before 7.0.1-7 allows remote attackers to have unspecified impact by leveraging lack of NULL pointer checks.
1Tats
1W3m
May 6, 2026
Dec 12, 2016
N/A· v4
6.5 MEDIUM· v3
4.3 MEDIUM· v2
An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-33. w3m allows remote attackers to cause a denial of service (segmentation fault and crash) via a crafted HTML page.
1Tats
1W3m
May 6, 2026
Dec 12, 2016
N/A· v4
6.5 MEDIUM· v3
4.3 MEDIUM· v2
An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-33. w3m allows remote attackers to cause a denial of service (segmentation fault and crash) via a crafted HTML page.
1Tats
1W3m
May 6, 2026
Dec 12, 2016
N/A· v4
6.5 MEDIUM· v3
4.3 MEDIUM· v2
An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-33. w3m allows remote attackers to cause a denial of service (segmentation fault and crash) via a crafted HTML page.
1Tats
1W3m
May 6, 2026
Dec 12, 2016
N/A· v4
6.5 MEDIUM· v3
4.3 MEDIUM· v2
An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-33. w3m allows remote attackers to cause a denial of service (segmentation fault and crash) via a crafted HTML page.
1Tats
1W3m
May 6, 2026
Dec 12, 2016
N/A· v4
6.5 MEDIUM· v3
4.3 MEDIUM· v2
An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-33. w3m allows remote attackers to cause a denial of service (segmentation fault and crash) via a crafted HTML page.
1Tats
1W3m
May 6, 2026
Dec 12, 2016
N/A· v4
6.5 MEDIUM· v3
4.3 MEDIUM· v2
An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-33. w3m allows remote attackers to cause a denial of service (segmentation fault and crash) via a crafted HTML page.
1Tats
1W3m
May 6, 2026
Dec 12, 2016
N/A· v4
6.5 MEDIUM· v3
4.3 MEDIUM· v2
An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-31. w3m allows remote attackers to cause a denial of service (segmentation fault and crash) via a crafted HTML page.
1Tats
1W3m
May 6, 2026
Dec 12, 2016
N/A· v4
6.5 MEDIUM· v3
4.3 MEDIUM· v2
An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-31. w3m allows remote attackers to cause a denial of service (segmentation fault and crash) via a crafted HTML page.
1Tats
1W3m
May 6, 2026
Dec 12, 2016
N/A· v4
6.5 MEDIUM· v3
4.3 MEDIUM· v2
An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-31. w3m allows remote attackers to cause a denial of service (segmentation fault and crash) via a crafted HTML page.
1Tats
1W3m
May 6, 2026
Dec 12, 2016
N/A· v4
6.5 MEDIUM· v3
4.3 MEDIUM· v2
An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-31. w3m allows remote attackers to cause a denial of service (segmentation fault and crash) via a crafted HTML page.
1Tats
1W3m
May 6, 2026
Dec 12, 2016
N/A· v4
6.5 MEDIUM· v3
4.3 MEDIUM· v2
An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-31. w3m allows remote attackers to cause a denial of service (segmentation fault and crash) via a crafted HTML page.
1Tats
1W3m
May 6, 2026
Dec 12, 2016
N/A· v4
6.5 MEDIUM· v3
4.3 MEDIUM· v2
An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-31. w3m allows remote attackers to cause a denial of service (segmentation fault and crash) via a crafted HTML page.
2Debian
Postgresql
2Debian Linux
Postgresql
May 6, 2026
Dec 9, 2016
N/A· v4
8.3 HIGH· v3
6.5 MEDIUM· v2
PostgreSQL before 9.1.23, 9.2.x before 9.2.18, 9.3.x before 9.3.14, 9.4.x before 9.4.9, and 9.5.x before 9.5.4 allow remote authenticated users to cause a denial of service (NULL pointer dereference and server crash), ob...Show more
PostgreSQL before 9.1.23, 9.2.x before 9.2.18, 9.3.x before 9.3.14, 9.4.x before 9.4.9, and 9.5.x before 9.5.4 allow remote authenticated users to cause a denial of service (NULL pointer dereference and server crash), obtain sensitive memory information, or possibly execute arbitrary code via (1) a CASE expression within the test value subexpression of another CASE or (2) inlining of an SQL function that implements the equality operator used for a CASE expression involving values of different types.Show less
1Gnome
1Libgsf
May 6, 2026
Dec 8, 2016
N/A· v4
5.5 MEDIUM· v3
4.3 MEDIUM· v2
An error within the "tar_directory_for_file()" function (gsf-infile-tar.c) in GNOME Structured File Library before 1.14.41 can be exploited to trigger a Null pointer dereference and subsequently cause a crash via a craft...Show more
An error within the "tar_directory_for_file()" function (gsf-infile-tar.c) in GNOME Structured File Library before 1.14.41 can be exploited to trigger a Null pointer dereference and subsequently cause a crash via a crafted TAR file.Show less
1Linux
1Linux Kernel
May 6, 2026
Nov 28, 2016
N/A· v4
7.8 HIGH· v3
9.3 HIGH· v2
security/keys/big_key.c in the Linux kernel before 4.8.7 mishandles unsuccessful crypto registration in conjunction with successful key-type registration, which allows local users to cause a denial of service (NULL point...Show more
security/keys/big_key.c in the Linux kernel before 4.8.7 mishandles unsuccessful crypto registration in conjunction with successful key-type registration, which allows local users to cause a denial of service (NULL pointer dereference and panic) or possibly have unspecified other impact via a crafted application that uses the big_key data type.Show less
1Linux
1Linux Kernel
May 6, 2026
Nov 28, 2016
N/A· v4
5.5 MEDIUM· v3
4.9 MEDIUM· v2
The hash_accept function in crypto/algif_hash.c in the Linux kernel before 4.3.6 allows local users to cause a denial of service (OOPS) by attempting to trigger use of in-kernel hash algorithms for a socket that has rece...Show more
The hash_accept function in crypto/algif_hash.c in the Linux kernel before 4.3.6 allows local users to cause a denial of service (OOPS) by attempting to trigger use of in-kernel hash algorithms for a socket that has received zero bytes of data.Show less
1Linux
1Linux Kernel
May 6, 2026
Nov 28, 2016
N/A· v4
5.5 MEDIUM· v3
4.9 MEDIUM· v2
The x86_decode_insn function in arch/x86/kvm/emulate.c in the Linux kernel before 4.8.7, when KVM is enabled, allows local users to cause a denial of service (host OS crash) via a certain use of a ModR/M byte in an undef...Show more
The x86_decode_insn function in arch/x86/kvm/emulate.c in the Linux kernel before 4.8.7, when KVM is enabled, allows local users to cause a denial of service (host OS crash) via a certain use of a ModR/M byte in an undefined instruction.Show less