CWE-476
AllowedNULL Pointer Dereference
Abstraction: Base · Status: Stable
The product dereferences a pointer that it expects to be valid but is NULL.
6786 vulnerabilities reference this CWE, most recent first.
GHSA-Q6M5-RPFJ-C92F
Vulnerability from github – Published: 2024-05-19 09:34 – Updated: 2024-11-12 18:30In the Linux kernel, the following vulnerability has been resolved:
of: module: prevent NULL pointer dereference in vsnprintf()
In of_modalias(), we can get passed the str and len parameters which would cause a kernel oops in vsnprintf() since it only allows passing a NULL ptr when the length is also 0. Also, we need to filter out the negative values of the len parameter as these will result in a really huge buffer since snprintf() takes size_t parameter while ours is ssize_t...
Found by Linux Verification Center (linuxtesting.org) with the Svace static analysis tool.
{
"affected": [],
"aliases": [
"CVE-2024-35878"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-19T09:15:09Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nof: module: prevent NULL pointer dereference in vsnprintf()\n\nIn of_modalias(), we can get passed the str and len parameters which would\ncause a kernel oops in vsnprintf() since it only allows passing a NULL ptr\nwhen the length is also 0. Also, we need to filter out the negative values\nof the len parameter as these will result in a really huge buffer since\nsnprintf() takes size_t parameter while ours is ssize_t...\n\nFound by Linux Verification Center (linuxtesting.org) with the Svace static\nanalysis tool.",
"id": "GHSA-q6m5-rpfj-c92f",
"modified": "2024-11-12T18:30:50Z",
"published": "2024-05-19T09:34:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-35878"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/544561dc56f7e69a053c25e11e6170f48bb97898"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a1aa5390cc912934fee76ce80af5f940452fa987"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e4a449368a2ce6d57a775d0ead27fc07f5a86e5b"
}
],
"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:L",
"type": "CVSS_V3"
}
]
}
GHSA-Q6PX-8PWJ-PPVH
Vulnerability from github – Published: 2024-03-26 18:32 – Updated: 2025-01-27 15:30In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu: Fix the null pointer when load rlc firmware
If the RLC firmware is invalid because of wrong header size, the pointer to the rlc firmware is released in function amdgpu_ucode_request. There will be a null pointer error in subsequent use. So skip validation to fix it.
{
"affected": [],
"aliases": [
"CVE-2024-26649"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-03-26T18:15:10Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: Fix the null pointer when load rlc firmware\n\nIf the RLC firmware is invalid because of wrong header size,\nthe pointer to the rlc firmware is released in function\namdgpu_ucode_request. There will be a null pointer error\nin subsequent use. So skip validation to fix it.",
"id": "GHSA-q6px-8pwj-ppvh",
"modified": "2025-01-27T15:30:55Z",
"published": "2024-03-26T18:32:07Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26649"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8b5bacce2d13dbe648f0bfd3f738ecce8db4978c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/bc03c02cc1991a066b23e69bbcc0f66e8f1f7453"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d3887448486caeef9687fb5dfebd4ff91e0f25aa"
}
],
"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-Q6RW-M9P2-PJQ2
Vulnerability from github – Published: 2026-10-09 06:31 – Updated: 2026-10-09 06:31OpenPrinting CUPS before 2.4.20 contains a NULL pointer dereference caused by repeated IPP group tags in job-creation requests. IPP parsing creates unnamed separator attributes with IPP_TAG_ZERO, but add_job() converts these separators to IPP_TAG_JOB. During job startup, get_options()/ipp_length() subsequently calls strlen() on a NULL attribute name, terminating cupsd and disrupting all queues. A single crafted Print-Job request can trigger the crash when the client can reach the scheduler and submit jobs to an accepting, enabled queue supporting the submitted document format. Anonymous submission is possible when permitted by listener and access-control configuration.
{
"affected": [],
"aliases": [
"CVE-2026-107890"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-09T05:16:44Z",
"severity": "LOW"
},
"details": "OpenPrinting CUPS before 2.4.20 contains a NULL pointer dereference caused by repeated IPP group tags in job-creation requests. IPP parsing creates unnamed separator attributes with IPP_TAG_ZERO, but add_job() converts these separators to IPP_TAG_JOB. During job startup, get_options()/ipp_length() subsequently calls strlen() on a NULL attribute name, terminating cupsd and disrupting all queues. A single crafted Print-Job request can trigger the crash when the client can reach the scheduler and submit jobs to an accepting, enabled queue supporting the submitted document format. Anonymous submission is possible when permitted by listener and access-control configuration.",
"id": "GHSA-q6rw-m9p2-pjq2",
"modified": "2026-10-09T06:31:15Z",
"published": "2026-10-09T06:31:15Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/OpenPrinting/cups/security/advisories/GHSA-wjc4-qhjr-5m5x"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-107890"
}
],
"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:L",
"type": "CVSS_V3"
}
]
}
GHSA-Q6X9-7RWW-JJGG
Vulnerability from github – Published: 2025-09-09 15:31 – Updated: 2025-10-20 21:30A denial-of-service security issue exists in the affected product and version. The security issue stems from the controller repeatedly attempting to forward messages. The issue could result in a major nonrecoverable fault on the controller.
{
"affected": [],
"aliases": [
"CVE-2025-9166"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-09T13:15:33Z",
"severity": "HIGH"
},
"details": "A denial-of-service security issue exists in the affected product and version. The security issue stems from the controller repeatedly attempting to forward messages. The issue could result in a major nonrecoverable fault on the controller.",
"id": "GHSA-q6x9-7rww-jjgg",
"modified": "2025-10-20T21:30:27Z",
"published": "2025-09-09T15:31:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-9166"
},
{
"type": "WEB",
"url": "https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1747.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"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-Q725-VFRQ-PW65
Vulnerability from github – Published: 2022-05-14 01:00 – Updated: 2022-05-14 01:00LibRaw::copy_bayer in libraw_cxx.cpp in LibRaw 0.19.1 has a NULL pointer dereference.
{
"affected": [],
"aliases": [
"CVE-2018-20364"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-12-22T17:29:00Z",
"severity": "MODERATE"
},
"details": "LibRaw::copy_bayer in libraw_cxx.cpp in LibRaw 0.19.1 has a NULL pointer dereference.",
"id": "GHSA-q725-vfrq-pw65",
"modified": "2022-05-14T01:00:53Z",
"published": "2022-05-14T01:00:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-20364"
},
{
"type": "WEB",
"url": "https://github.com/LibRaw/LibRaw/issues/194"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3989-1"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/106299"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-Q72C-6P77-WJ85
Vulnerability from github – Published: 2022-05-13 01:25 – Updated: 2022-05-13 01:25An issue was discovered in LibSass <3.5.3. A NULL pointer dereference was found in the function Sass::Expand::operator which could be leveraged by an attacker to cause a denial of service (application crash) or possibly have unspecified other impact.
{
"affected": [],
"aliases": [
"CVE-2018-11695"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-06-04T06:29:00Z",
"severity": "HIGH"
},
"details": "An issue was discovered in LibSass \u003c3.5.3. A NULL pointer dereference was found in the function Sass::Expand::operator which could be leveraged by an attacker to cause a denial of service (application crash) or possibly have unspecified other impact.",
"id": "GHSA-q72c-6p77-wj85",
"modified": "2022-05-13T01:25:03Z",
"published": "2022-05-13T01:25:03Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-11695"
},
{
"type": "WEB",
"url": "https://github.com/sass/libsass/issues/2664"
},
{
"type": "WEB",
"url": "https://github.com/sass/libsass/pull/2631"
},
{
"type": "WEB",
"url": "https://github.com/sass/libsass/releases"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-Q72R-F435-84X2
Vulnerability from github – Published: 2022-05-24 17:46 – Updated: 2022-05-24 17:46An issue was discovered in Realtek rtl8723de BLE Stack <= 4.1 that allows remote attackers to cause a Denial of Service via the interval field to the CONNECT_REQ message.
{
"affected": [],
"aliases": [
"CVE-2020-23539"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-04-08T17:15:00Z",
"severity": "HIGH"
},
"details": "An issue was discovered in Realtek rtl8723de BLE Stack \u003c= 4.1 that allows remote attackers to cause a Denial of Service via the interval field to the CONNECT_REQ message.",
"id": "GHSA-q72r-f435-84x2",
"modified": "2022-05-24T17:46:49Z",
"published": "2022-05-24T17:46:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-23539"
},
{
"type": "WEB",
"url": "https://github.com/pokerfacett/MY_REQUEST/blob/df73fe140655ea44542b03ac186e6c2b47e97540/Realtek%208723ds%20BLE%20SDK%20denial%20of%20service%20attack.md"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-Q73R-HX82-C268
Vulnerability from github – Published: 2022-11-28 12:30 – Updated: 2022-12-01 21:30A null pointer dereference vulnerability exists in the handle_ioctl_83150 functionality of Callback technologies CBFS Filter 20.0.8317. A specially-crafted I/O request packet (IRP) can lead to denial of service. An attacker can issue an ioctl to trigger this vulnerability.
{
"affected": [],
"aliases": [
"CVE-2022-43588"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-11-28T11:15:00Z",
"severity": "MODERATE"
},
"details": "A null pointer dereference vulnerability exists in the handle_ioctl_83150 functionality of Callback technologies CBFS Filter 20.0.8317. A specially-crafted I/O request packet (IRP) can lead to denial of service. An attacker can issue an ioctl to trigger this vulnerability.",
"id": "GHSA-q73r-hx82-c268",
"modified": "2022-12-01T21:30:20Z",
"published": "2022-11-28T12:30:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-43588"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2022-1647"
}
],
"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-Q73V-PP5W-Q5MQ
Vulnerability from github – Published: 2024-12-16 18:31 – Updated: 2024-12-16 18:31A 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 dereference. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
{
"affected": [],
"aliases": [
"CVE-2024-12658"
],
"database_specific": {
"cwe_ids": [
"CWE-404",
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-12-16T18:15:10Z",
"severity": "MODERATE"
},
"details": "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 dereference. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.",
"id": "GHSA-q73v-pp5w-q5mq",
"modified": "2024-12-16T18:31:09Z",
"published": "2024-12-16T18:31:09Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-12658"
},
{
"type": "WEB",
"url": "https://shareforall.notion.site/IOBit-Advanced-SystemCare-Utimate-AscRegistryFilter-0x8001E01C-NPD-DOS-15160437bb1e800eb1cadd53b224d088"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.288527"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.288527"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.456036"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-Q79F-R3XP-PP5M
Vulnerability from github – Published: 2026-07-01 15:35 – Updated: 2026-07-24 00:32In the Linux kernel, the following vulnerability has been resolved:
mm/damon/reclaim: handle ctx allocation failure
Patch series "mm/damon/{reclaim,lru_sort}: handle ctx allocation failures".
DAMON_RECLAIM and DAMON_LRU_SORT could dereference NULL pointers if their damon_ctx object allocations fail. The bugs are expected to happen infrequently because the allocations are arguably too small to fail on common setups. But theoretically they are possible and the consequences are bad. Fix those.
The issues were discovered [1] by Sashiko.
This patch (of 2):
DAMON_RECLAIM allocates the damon_ctx object for its kdamond in its init function. damon_reclaim_enabled_store() wrongly assumes the allocation will always succeed once tried. If the damon_ctx allocation was failed, therefore, code execution reaches to damon_commit_ctx() while 'ctx' is NULL. As a result, it dereferences the NULL 'ctx' pointer. Avoid the NULL dereference by returning -ENOMEM if 'ctx' is NULL.
{
"affected": [],
"aliases": [
"CVE-2026-53334"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-01T14:16:41Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/reclaim: handle ctx allocation failure\n\nPatch series \"mm/damon/{reclaim,lru_sort}: handle ctx allocation failures\".\n\nDAMON_RECLAIM and DAMON_LRU_SORT could dereference NULL pointers if their\ndamon_ctx object allocations fail. The bugs are expected to happen\ninfrequently because the allocations are arguably too small to fail on\ncommon setups. But theoretically they are possible and the consequences\nare bad. Fix those.\n\nThe issues were discovered [1] by Sashiko.\n\n\nThis patch (of 2):\n\nDAMON_RECLAIM allocates the damon_ctx object for its kdamond in its init\nfunction. damon_reclaim_enabled_store() wrongly assumes the allocation\nwill always succeed once tried. If the damon_ctx allocation was failed,\ntherefore, code execution reaches to damon_commit_ctx() while \u0027ctx\u0027 is\nNULL. As a result, it dereferences the NULL \u0027ctx\u0027 pointer. Avoid the\nNULL dereference by returning -ENOMEM if \u0027ctx\u0027 is NULL.",
"id": "GHSA-q79f-r3xp-pp5m",
"modified": "2026-07-24T00:32:32Z",
"published": "2026-07-01T15:35:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53334"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/635b45ce61de53a9357e28ac97461428cdb650f0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/66bc00ea37fa8ec14be5a3909d067a5967ef234b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7e2ed8a29427af534bf2cb9b8bc51762b8b6e654"
}
],
"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"
}
]
}
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.