CWE-476
AllowedNULL Pointer Dereference
Abstraction: Base · Status: Stable
The product dereferences a pointer that it expects to be valid but is NULL.
6321 vulnerabilities reference this CWE, most recent first.
GHSA-374Q-R433-22PC
Vulnerability from github – Published: 2022-05-14 03:26 – Updated: 2022-05-14 03:26In Android before 2018-04-05 or earlier security patch level on Qualcomm Snapdragon Mobile and Snapdragon Wear MDM9206, MDM9607, MDM9635M, MDM9640, MDM9645, MDM9650, MDM9655, MSM8909W, SD 210/SD 212/SD 205, SD 400, SD 410/12, SD 617, SD 650/52, SD 808, SD 810, and SDX20, in a QTEE syscall handler, an untrusted pointer dereference can occur.
{
"affected": [],
"aliases": [
"CVE-2015-9191"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-04-18T14:29:00Z",
"severity": "CRITICAL"
},
"details": "In Android before 2018-04-05 or earlier security patch level on Qualcomm Snapdragon Mobile and Snapdragon Wear MDM9206, MDM9607, MDM9635M, MDM9640, MDM9645, MDM9650, MDM9655, MSM8909W, SD 210/SD 212/SD 205, SD 400, SD 410/12, SD 617, SD 650/52, SD 808, SD 810, and SDX20, in a QTEE syscall handler, an untrusted pointer dereference can occur.",
"id": "GHSA-374q-r433-22pc",
"modified": "2022-05-14T03:26:15Z",
"published": "2022-05-14T03:26:15Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2015-9191"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/2018-04-01"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/103671"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-375R-HMJC-J5GG
Vulnerability from github – Published: 2024-09-11 18:31 – Updated: 2024-09-13 18:31In the Linux kernel, the following vulnerability has been resolved:
drm/msm/dpu: move dpu_encoder's connector assignment to atomic_enable()
For cases where the crtc's connectors_changed was set without enable/active getting toggled , there is an atomic_enable() call followed by an atomic_disable() but without an atomic_mode_set().
This results in a NULL ptr access for the dpu_encoder_get_drm_fmt() call in the atomic_enable() as the dpu_encoder's connector was cleared in the atomic_disable() but not re-assigned as there was no atomic_mode_set() call.
Fix the NULL ptr access by moving the assignment for atomic_enable() and also use drm_atomic_get_new_connector_for_encoder() to get the connector from the atomic_state.
Patchwork: https://patchwork.freedesktop.org/patch/606729/
{
"affected": [],
"aliases": [
"CVE-2024-45015"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-09-11T16:15:06Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/msm/dpu: move dpu_encoder\u0027s connector assignment to atomic_enable()\n\nFor cases where the crtc\u0027s connectors_changed was set without enable/active\ngetting toggled , there is an atomic_enable() call followed by an\natomic_disable() but without an atomic_mode_set().\n\nThis results in a NULL ptr access for the dpu_encoder_get_drm_fmt() call in\nthe atomic_enable() as the dpu_encoder\u0027s connector was cleared in the\natomic_disable() but not re-assigned as there was no atomic_mode_set() call.\n\nFix the NULL ptr access by moving the assignment for atomic_enable() and also\nuse drm_atomic_get_new_connector_for_encoder() to get the connector from\nthe atomic_state.\n\nPatchwork: https://patchwork.freedesktop.org/patch/606729/",
"id": "GHSA-375r-hmjc-j5gg",
"modified": "2024-09-13T18:31:41Z",
"published": "2024-09-11T18:31:05Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-45015"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3bacf814b6a61cc683c68465f175ebd938f09c52"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3fb61718bcbe309279205d1cc275a6435611dc77"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/aedf02e46eb549dac8db4821a6b9f0c6bf6e3990"
}
],
"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-376G-F56R-V5H4
Vulnerability from github – Published: 2024-12-27 15:31 – Updated: 2026-06-01 18:31In the Linux kernel, the following vulnerability has been resolved:
f2fs: fix null-ptr-deref in f2fs_submit_page_bio()
There's issue as follows when concurrently installing the f2fs.ko module and mounting the f2fs file system: KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027] RIP: 0010:__bio_alloc+0x2fb/0x6c0 [f2fs] Call Trace: f2fs_submit_page_bio+0x126/0x8b0 [f2fs] __get_meta_page+0x1d4/0x920 [f2fs] get_checkpoint_version.constprop.0+0x2b/0x3c0 [f2fs] validate_checkpoint+0xac/0x290 [f2fs] f2fs_get_valid_checkpoint+0x207/0x950 [f2fs] f2fs_fill_super+0x1007/0x39b0 [f2fs] mount_bdev+0x183/0x250 legacy_get_tree+0xf4/0x1e0 vfs_get_tree+0x88/0x340 do_new_mount+0x283/0x5e0 path_mount+0x2b2/0x15b0 __x64_sys_mount+0x1fe/0x270 do_syscall_64+0x5f/0x170 entry_SYSCALL_64_after_hwframe+0x76/0x7e
Above issue happens as the biset of the f2fs file system is not initialized before register "f2fs_fs_type". To address above issue just register "f2fs_fs_type" at the last in init_f2fs_fs(). Ensure that all f2fs file system resources are initialized.
{
"affected": [],
"aliases": [
"CVE-2024-53221"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-12-27T14:15:30Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix null-ptr-deref in f2fs_submit_page_bio()\n\nThere\u0027s issue as follows when concurrently installing the f2fs.ko\nmodule and mounting the f2fs file system:\nKASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027]\nRIP: 0010:__bio_alloc+0x2fb/0x6c0 [f2fs]\nCall Trace:\n \u003cTASK\u003e\n f2fs_submit_page_bio+0x126/0x8b0 [f2fs]\n __get_meta_page+0x1d4/0x920 [f2fs]\n get_checkpoint_version.constprop.0+0x2b/0x3c0 [f2fs]\n validate_checkpoint+0xac/0x290 [f2fs]\n f2fs_get_valid_checkpoint+0x207/0x950 [f2fs]\n f2fs_fill_super+0x1007/0x39b0 [f2fs]\n mount_bdev+0x183/0x250\n legacy_get_tree+0xf4/0x1e0\n vfs_get_tree+0x88/0x340\n do_new_mount+0x283/0x5e0\n path_mount+0x2b2/0x15b0\n __x64_sys_mount+0x1fe/0x270\n do_syscall_64+0x5f/0x170\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nAbove issue happens as the biset of the f2fs file system is not\ninitialized before register \"f2fs_fs_type\".\nTo address above issue just register \"f2fs_fs_type\" at the last in\ninit_f2fs_fs(). Ensure that all f2fs file system resources are\ninitialized.",
"id": "GHSA-376g-f56r-v5h4",
"modified": "2026-06-01T18:31:19Z",
"published": "2024-12-27T15:31:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-53221"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/32f5e291b7677495f98246eec573767430321c08"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4289be8465924748daa9bf14866eb7f0987d4e39"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8dddc12d03248755d9f709bc1eb9e3ea2bf1b322"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9e11b1d5fda972f6be60ab732976a7c8e064cd56"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b7d0a97b28083084ebdd8e5c6bccd12e6ec18faa"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/bd9197b72d772be7bccc3b66c83a3157cfe2f96f"
}
],
"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-3772-X29G-83R5
Vulnerability from github – Published: 2026-01-13 18:31 – Updated: 2026-03-25 21:30In the Linux kernel, the following vulnerability has been resolved:
drm/ttm: Avoid NULL pointer deref for evicted BOs
It is possible for a BO to exist that is not currently associated with a resource, e.g. because it has been evicted.
When devcoredump tries to read the contents of all BOs for dumping, we need to expect this as well -- in this case, ENODATA is recorded instead of the buffer contents.
{
"affected": [],
"aliases": [
"CVE-2025-71083"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-13T16:16:07Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/ttm: Avoid NULL pointer deref for evicted BOs\n\nIt is possible for a BO to exist that is not currently associated with a\nresource, e.g. because it has been evicted.\n\nWhen devcoredump tries to read the contents of all BOs for dumping, we need\nto expect this as well -- in this case, ENODATA is recorded instead of the\nbuffer contents.",
"id": "GHSA-3772-x29g-83r5",
"modified": "2026-03-25T21:30:21Z",
"published": "2026-01-13T18:31:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-71083"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3d004f7341d4898889801ebb2ef61ffca610dd6f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/47a85604a761005d255ae38115ee630cc6931756"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/491adc6a0f9903c32b05f284df1148de39e8e644"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4b9944493c6d92d7b29cfd83aaf3deb842b8da79"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5a81095d3e1b521ac7cfe3b14d5f149bace3d6e0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b94182b3d7228aec18d069cba56d5982e9bfe1b1"
}
],
"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-3774-9HFM-H8PQ
Vulnerability from github – Published: 2022-05-24 19:15 – Updated: 2022-05-24 19:15An issue was discovered in pdftools through 20200714. A NULL pointer dereference exists in the function Analyze::AnalyzeXref() located in analyze.cpp. It allows an attacker to cause Denial of Service.
{
"affected": [],
"aliases": [
"CVE-2021-39541"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-09-20T16:15:00Z",
"severity": "MODERATE"
},
"details": "An issue was discovered in pdftools through 20200714. A NULL pointer dereference exists in the function Analyze::AnalyzeXref() located in analyze.cpp. It allows an attacker to cause Denial of Service.",
"id": "GHSA-3774-9hfm-h8pq",
"modified": "2022-05-24T19:15:09Z",
"published": "2022-05-24T19:15:09Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-39541"
},
{
"type": "WEB",
"url": "https://github.com/leonhad/pdftools/issues/3"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-377X-8Q3W-WMVJ
Vulnerability from github – Published: 2022-05-17 02:54 – Updated: 2025-04-20 03:34The ColorChanger::GetColorFromStack function in colorchanger.cpp in PoDoFo 0.9.5 allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted file.
{
"affected": [],
"aliases": [
"CVE-2017-6842"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-03-15T14:59:00Z",
"severity": "MODERATE"
},
"details": "The ColorChanger::GetColorFromStack function in colorchanger.cpp in PoDoFo 0.9.5 allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted file.",
"id": "GHSA-377x-8q3w-wmvj",
"modified": "2025-04-20T03:34:08Z",
"published": "2022-05-17T02:54:59Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-6842"
},
{
"type": "WEB",
"url": "https://blogs.gentoo.org/ago/2017/03/02/podofo-null-pointer-dereference-in-colorchangergetcolorfromstack-colorchanger-cpp"
}
],
"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-377X-M9RV-682V
Vulnerability from github – Published: 2022-05-17 03:15 – Updated: 2022-05-17 03:15All versions of NVIDIA Windows GPU Display Driver contain a vulnerability in the kernel mode layer (nvlddmkm.sys) handler for DxgDdiEscape where multiple pointers are used without checking for NULL, leading to denial of service or potential escalation of privileges.
{
"affected": [],
"aliases": [
"CVE-2016-8813"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2016-12-16T21:59:00Z",
"severity": "HIGH"
},
"details": "All versions of NVIDIA Windows GPU Display Driver contain a vulnerability in the kernel mode layer (nvlddmkm.sys) handler for DxgDdiEscape where multiple pointers are used without checking for NULL, leading to denial of service or potential escalation of privileges.",
"id": "GHSA-377x-m9rv-682v",
"modified": "2022-05-17T03:15:20Z",
"published": "2022-05-17T03:15:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2016-8813"
},
{
"type": "WEB",
"url": "http://nvidia.custhelp.com/app/answers/detail/a_id/4257"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/95057"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-37RF-GF26-33R7
Vulnerability from github – Published: 2024-06-20 12:31 – Updated: 2024-09-18 18:30In the Linux kernel, the following vulnerability has been resolved:
drm: mxsfb: Fix NULL pointer dereference
mxsfb should not ever dereference the NULL pointer which drm_atomic_get_new_bridge_state is allowed to return. Assume a fixed format instead.
{
"affected": [],
"aliases": [
"CVE-2022-48718"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-06-20T11:15:55Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm: mxsfb: Fix NULL pointer dereference\n\nmxsfb should not ever dereference the NULL pointer which\ndrm_atomic_get_new_bridge_state is allowed to return.\nAssume a fixed format instead.",
"id": "GHSA-37rf-gf26-33r7",
"modified": "2024-09-18T18:30:49Z",
"published": "2024-06-20T12:31:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48718"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/622c9a3a7868e1eeca39c55305ca3ebec4742b64"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6f9267e01cca749137349d8ffb0d0ebbadf567f4"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/86a337bb803040e4401b87c974a7fb92efe3d0e1"
}
],
"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-37V2-V56R-2JQJ
Vulnerability from github – Published: 2022-05-17 02:54 – Updated: 2025-04-20 03:34The PoDoFo::PdfXObject::PdfXObject function in PdfXObject.cpp in PoDoFo 0.9.5 allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted file.
{
"affected": [],
"aliases": [
"CVE-2017-6848"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-03-15T14:59:00Z",
"severity": "MODERATE"
},
"details": "The PoDoFo::PdfXObject::PdfXObject function in PdfXObject.cpp in PoDoFo 0.9.5 allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted file.",
"id": "GHSA-37v2-v56r-2jqj",
"modified": "2025-04-20T03:34:08Z",
"published": "2022-05-17T02:54:59Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-6848"
},
{
"type": "WEB",
"url": "https://blogs.gentoo.org/ago/2017/03/02/podofo-null-pointer-dereference-in-podofopdfxobjectpdfxobject-pdfxobject-cpp"
}
],
"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-37V4-7665-MGQ9
Vulnerability from github – Published: 2023-03-13 18:30 – Updated: 2023-03-24 15:30STEPTools v18SP1 ifcmesh library (v18.1) is affected due to a null pointer dereference, which could allow an attacker to deny application usage when reading a specially constructed file, resulting in an application crash.
{
"affected": [],
"aliases": [
"CVE-2023-0973"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-03-13T18:15:00Z",
"severity": "MODERATE"
},
"details": "STEPTools v18SP1 ifcmesh library (v18.1) is affected due to a null pointer dereference, which could allow an attacker to deny application usage when reading a specially constructed file, resulting in an application crash.",
"id": "GHSA-37v4-7665-mgq9",
"modified": "2023-03-24T15:30:20Z",
"published": "2023-03-13T18:30:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-0973"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-23-068-04"
}
],
"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"
}
]
}
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.