CWE-476
AllowedNULL Pointer Dereference
Abstraction: Base · Status: Stable
The product dereferences a pointer that it expects to be valid but is NULL.
6775 vulnerabilities reference this CWE, most recent first.
GHSA-PX5W-PF7Q-23JQ
Vulnerability from github – Published: 2025-09-15 15:31 – Updated: 2025-12-04 15:30In the Linux kernel, the following vulnerability has been resolved:
hwmon: (pmbus_core) Fix NULL pointer dereference
Pass i2c_client to _pmbus_is_enabled to drop the assumption that a regulator device is passed in.
This will fix the issue of a NULL pointer dereference when called from _pmbus_get_flags.
{
"affected": [],
"aliases": [
"CVE-2023-53206"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-15T15:15:47Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (pmbus_core) Fix NULL pointer dereference\n\nPass i2c_client to _pmbus_is_enabled to drop the assumption\nthat a regulator device is passed in.\n\nThis will fix the issue of a NULL pointer dereference when called from\n_pmbus_get_flags.",
"id": "GHSA-px5w-pf7q-23jq",
"modified": "2025-12-04T15:30:31Z",
"published": "2025-09-15T15:31:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53206"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0bd66784274a287beada2933c2c0fa3a0ddae0d7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7444253cacd92412bc8d33d1c9b5401f52cdf0e2"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PX6R-PJWR-J383
Vulnerability from github – Published: 2022-05-14 01:15 – Updated: 2022-05-14 01:15An issue was discovered in Xpdf 4.01.01. There is a NULL pointer dereference in the function Gfx::opSetExtGState in Gfx.cc.
{
"affected": [],
"aliases": [
"CVE-2019-10022"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-03-25T00:29:00Z",
"severity": "MODERATE"
},
"details": "An issue was discovered in Xpdf 4.01.01. There is a NULL pointer dereference in the function Gfx::opSetExtGState in Gfx.cc.",
"id": "GHSA-px6r-pjwr-j383",
"modified": "2022-05-14T01:15:48Z",
"published": "2022-05-14T01:15:48Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-10022"
},
{
"type": "WEB",
"url": "https://forum.xpdfreader.com/viewtopic.php?f=3\u0026t=41273"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PXR2-XWWM-F7F3
Vulnerability from github – Published: 2022-05-13 01:11 – Updated: 2022-05-13 01:11win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows local users to gain privileges via a crafted application that triggers a NULL pointer dereference, a different vulnerability than other "Vulnerability Type 2" CVEs listed in MS11-034, aka "Win32k Null Pointer De-reference Vulnerability."
{
"affected": [],
"aliases": [
"CVE-2011-1229"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2011-04-13T20:26:00Z",
"severity": "HIGH"
},
"details": "win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows local users to gain privileges via a crafted application that triggers a NULL pointer dereference, a different vulnerability than other \"Vulnerability Type 2\" CVEs listed in MS11-034, aka \"Win32k Null Pointer De-reference Vulnerability.\"",
"id": "GHSA-pxr2-xwwm-f7f3",
"modified": "2022-05-13T01:11:20Z",
"published": "2022-05-13T01:11:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2011-1229"
},
{
"type": "WEB",
"url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-034"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/66411"
},
{
"type": "WEB",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12503"
},
{
"type": "WEB",
"url": "http://blogs.technet.com/b/srd/archive/2011/04/12/ms11-034-addressing-vulnerabilities-in-the-win32k-subsystem.aspx"
},
{
"type": "WEB",
"url": "http://osvdb.org/71735"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/44156"
},
{
"type": "WEB",
"url": "http://support.avaya.com/css/P8/documents/100133352"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/47229"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id?1025345"
},
{
"type": "WEB",
"url": "http://www.us-cert.gov/cas/techalerts/TA11-102A.html"
},
{
"type": "WEB",
"url": "http://www.vupen.com/english/advisories/2011/0952"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-PXR7-H23V-3WV6
Vulnerability from github – Published: 2025-04-08 18:34 – Updated: 2025-04-08 18:34After Effects versions 25.1, 24.6.4 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 condition. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
{
"affected": [],
"aliases": [
"CVE-2025-27185"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-04-08T18:15:54Z",
"severity": "MODERATE"
},
"details": "After Effects versions 25.1, 24.6.4 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 condition. Exploitation of this issue requires user interaction in that a victim must open a malicious file.",
"id": "GHSA-pxr7-h23v-3wv6",
"modified": "2025-04-08T18:34:49Z",
"published": "2025-04-08T18:34:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-27185"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/after_effects/apsb25-23.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PXRJ-JCHH-722X
Vulnerability from github – Published: 2025-06-18 12:30 – Updated: 2025-11-13 18:31In the Linux kernel, the following vulnerability has been resolved:
fs/ntfs3: Fix missing i_op in ntfs_read_mft
There is null pointer dereference because i_op == NULL. The bug happens because we don't initialize i_op for records in $Extend.
{
"affected": [],
"aliases": [
"CVE-2022-50056"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-06-18T11:15:34Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: Fix missing i_op in ntfs_read_mft\n\nThere is null pointer dereference because i_op == NULL.\nThe bug happens because we don\u0027t initialize i_op for records in $Extend.",
"id": "GHSA-pxrj-jchh-722x",
"modified": "2025-11-13T18:31:00Z",
"published": "2025-06-18T12:30:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50056"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/37a530bfe56ca9a0d3129598803f2794c7428aae"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8089a1bc27b41e6800590a92d17c119e9aa8ff53"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c293e8abc09e6e1faa50d967bd8862b1cbd575e5"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PXWF-H36W-WCXX
Vulnerability from github – Published: 2025-03-11 18:32 – Updated: 2025-03-11 18:32Illustrator versions 29.2.1, 28.7.4 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 condition. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
{
"affected": [],
"aliases": [
"CVE-2025-27170"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-11T18:15:35Z",
"severity": "MODERATE"
},
"details": "Illustrator versions 29.2.1, 28.7.4 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 condition. Exploitation of this issue requires user interaction in that a victim must open a malicious file.",
"id": "GHSA-pxwf-h36w-wcxx",
"modified": "2025-03-11T18:32:21Z",
"published": "2025-03-11T18:32:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-27170"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/illustrator/apsb25-17.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PXX8-P2CF-4Q57
Vulnerability from github – Published: 2024-08-21 09:31 – Updated: 2024-08-29 03:30In the Linux kernel, the following vulnerability has been resolved:
net/mlx5e: Fix macsec possible null dereference when updating MAC security entity (SecY)
Upon updating MAC security entity (SecY) in hw offload path, the macsec security association (SA) initialization routine is called. In case of extended packet number (epn) is enabled the salt and ssci attributes are retrieved using the MACsec driver rx_sa context which is unavailable when updating a SecY property such as encoding-sa hence the null dereference. Fix by using the provided SA to set those attributes.
{
"affected": [],
"aliases": [
"CVE-2022-48882"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-08-21T07:15:04Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Fix macsec possible null dereference when updating MAC security entity (SecY)\n\nUpon updating MAC security entity (SecY) in hw offload path, the macsec\nsecurity association (SA) initialization routine is called. In case of\nextended packet number (epn) is enabled the salt and ssci attributes are\nretrieved using the MACsec driver rx_sa context which is unavailable when\nupdating a SecY property such as encoding-sa hence the null dereference.\nFix by using the provided SA to set those attributes.",
"id": "GHSA-pxx8-p2cf-4q57",
"modified": "2024-08-29T03:30:49Z",
"published": "2024-08-21T09:31:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48882"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/514d9c6a39213d8200884e70f60ce7faef1ee597"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9828994ac492e8e7de47fe66097b7e665328f348"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-Q22H-9RC9-JPMP
Vulnerability from github – Published: 2024-03-27 06:30 – Updated: 2025-11-04 21:31GNU Midnight Commander 4.8.29-146-g299d9a2fb was discovered to contain a NULL pointer dereference via the function x_error_handler() at tty/x11conn.c. NOTE: this is disputed because it should be categorized as a usability problem (an X operation silently fails).
{
"affected": [],
"aliases": [
"CVE-2023-45925"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-03-27T05:15:47Z",
"severity": null
},
"details": "GNU Midnight Commander 4.8.29-146-g299d9a2fb was discovered to contain a NULL pointer dereference via the function x_error_handler() at tty/x11conn.c. NOTE: this is disputed because it should be categorized as a usability problem (an X operation silently fails).",
"id": "GHSA-q22h-9rc9-jpmp",
"modified": "2025-11-04T21:31:22Z",
"published": "2024-03-27T06:30:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-45925"
},
{
"type": "WEB",
"url": "https://midnight-commander.org/ticket/4484"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/176808/Midnight-Commander-4.8.29-146-g299d9a2fb-Null-Pointer.html"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2024/Jan/53"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-Q22W-MMF2-X3MR
Vulnerability from github – Published: 2022-05-24 17:20 – Updated: 2022-05-24 17:20An issue was discovered in LibVNCServer before 0.9.13. libvncserver/rfbregion.c has a NULL pointer dereference.
{
"affected": [],
"aliases": [
"CVE-2020-14397"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-06-17T16:15:00Z",
"severity": "MODERATE"
},
"details": "An issue was discovered in LibVNCServer before 0.9.13. libvncserver/rfbregion.c has a NULL pointer dereference.",
"id": "GHSA-q22w-mmf2-x3mr",
"modified": "2022-05-24T17:20:47Z",
"published": "2022-05-24T17:20:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-14397"
},
{
"type": "WEB",
"url": "https://github.com/LibVNC/libvncserver/commit/38e98ee61d74f5f5ab4aa4c77146faad1962d6d0"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf"
},
{
"type": "WEB",
"url": "https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00035.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2020/08/msg00045.html"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4434-1"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4573-1"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00033.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00055.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00066.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-Q259-QJ8C-5R52
Vulnerability from github – Published: 2022-05-24 17:07 – Updated: 2023-09-20 00:30A NULL pointer dereference is present in libyang before v1.0-r3 in the function lys_extension_instances_free() due to a copy of unresolved extensions in lys_restr_dup(). Applications that use libyang to parse untrusted input yang files may crash.
{
"affected": [],
"aliases": [
"CVE-2019-20398"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-01-22T22:15:00Z",
"severity": "MODERATE"
},
"details": "A NULL pointer dereference is present in libyang before v1.0-r3 in the function lys_extension_instances_free() due to a copy of unresolved extensions in lys_restr_dup(). Applications that use libyang to parse untrusted input yang files may crash.",
"id": "GHSA-q259-qj8c-5r52",
"modified": "2023-09-20T00:30:15Z",
"published": "2022-05-24T17:07:08Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-20398"
},
{
"type": "WEB",
"url": "https://github.com/CESNET/libyang/issues/773"
},
{
"type": "WEB",
"url": "https://github.com/CESNET/libyang/commit/7852b272ef77f8098c35deea6c6f09cb78176f08"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1793935"
},
{
"type": "WEB",
"url": "https://github.com/CESNET/libyang/compare/v1.0-r2...v1.0-r3"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
Mitigation MIT-56
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].
Mitigation
Select a programming language that is not susceptible to these issues.
Mitigation
Check the results of all functions that return a value and verify that the value is non-null before acting upon it.
Mitigation
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.
Mitigation
Explicitly initialize all variables and other data stores, either during declaration or just before the first usage.
No CAPEC attack patterns related to this CWE.