CWE-476
AllowedNULL Pointer Dereference
Abstraction: Base · Status: Stable
The product dereferences a pointer that it expects to be valid but is NULL.
6345 vulnerabilities reference this CWE, most recent first.
GHSA-2WR3-W5RH-2QX4
Vulnerability from github – Published: 2022-05-13 01:38 – Updated: 2025-04-20 03:45A security flaw was discovered in the nl80211_set_rekey_data() function in net/wireless/nl80211.c in the Linux kernel through 4.13.3. This function does not check whether the required attributes are present in a Netlink request. This request can be issued by a user with the CAP_NET_ADMIN capability and may result in a NULL pointer dereference and system crash.
{
"affected": [],
"aliases": [
"CVE-2017-12153"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-09-21T15:29:00Z",
"severity": "MODERATE"
},
"details": "A security flaw was discovered in the nl80211_set_rekey_data() function in net/wireless/nl80211.c in the Linux kernel through 4.13.3. This function does not check whether the required attributes are present in a Netlink request. This request can be issued by a user with the CAP_NET_ADMIN capability and may result in a NULL pointer dereference and system crash.",
"id": "GHSA-2wr3-w5rh-2qx4",
"modified": "2025-04-20T03:45:41Z",
"published": "2022-05-13T01:38:14Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-12153"
},
{
"type": "WEB",
"url": "https://bugzilla.novell.com/show_bug.cgi?id=1058410"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1491046"
},
{
"type": "WEB",
"url": "https://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211.git/commit/?id=e785fa0a164aa11001cba931367c7f94ffaff888"
},
{
"type": "WEB",
"url": "https://marc.info/?t=150525503100001\u0026r=1\u0026w=2"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3583-1"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3583-2"
},
{
"type": "WEB",
"url": "http://seclists.org/oss-sec/2017/q3/437"
},
{
"type": "WEB",
"url": "http://www.debian.org/security/2017/dsa-3981"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/100855"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-2WR3-XJQG-6Q48
Vulnerability from github – Published: 2024-08-25 00:30 – Updated: 2025-11-03 21:31An issue was discovered in Fort before 1.6.3. A malicious RPKI repository that descends from a (trusted) Trust Anchor can serve (via rsync or RRDP) a resource certificate containing an Authority Key Identifier extension that lacks the keyIdentifier field. Fort references this pointer without sanitizing it first. Because Fort is an RPKI Relying Party, a crash can lead to Route Origin Validation unavailability, which can lead to compromised routing.
{
"affected": [],
"aliases": [
"CVE-2024-45235"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-08-24T23:15:04Z",
"severity": "HIGH"
},
"details": "An issue was discovered in Fort before 1.6.3. A malicious RPKI repository that descends from a (trusted) Trust Anchor can serve (via rsync or RRDP) a resource certificate containing an Authority Key Identifier extension that lacks the keyIdentifier field. Fort references this pointer without sanitizing it first. Because Fort is an RPKI Relying Party, a crash can lead to Route Origin Validation unavailability, which can lead to compromised routing.",
"id": "GHSA-2wr3-xjqg-6q48",
"modified": "2025-11-03T21:31:11Z",
"published": "2024-08-25T00:30:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-45235"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/02/msg00030.html"
},
{
"type": "WEB",
"url": "https://nicmx.github.io/FORT-validator/CVE.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-2WWV-3G3G-H8W3
Vulnerability from github – Published: 2024-08-17 09:30 – Updated: 2024-09-10 21:31In the Linux kernel, the following vulnerability has been resolved:
ASoC: fsl: fsl_qmc_audio: Check devm_kasprintf() returned value
devm_kasprintf() can return a NULL pointer on failure but this returned value is not checked.
Fix this lack and check the returned value.
{
"affected": [],
"aliases": [
"CVE-2024-42298"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-08-17T09:15:10Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: fsl: fsl_qmc_audio: Check devm_kasprintf() returned value\n\ndevm_kasprintf() can return a NULL pointer on failure but this returned\nvalue is not checked.\n\nFix this lack and check the returned value.",
"id": "GHSA-2wwv-3g3g-h8w3",
"modified": "2024-09-10T21:31:39Z",
"published": "2024-08-17T09:30:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-42298"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/af466037fa2b263e8ea5c47285513d2487e17d90"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b4205dfcfe96182118e54343954827eda51b2135"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e62599902327d27687693f6e5253a5d56583db58"
}
],
"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-2WXR-PW8W-8WX5
Vulnerability from github – Published: 2022-05-24 16:56 – Updated: 2024-04-04 02:00In Apache Subversion versions up to and including 1.9.10, 1.10.4, 1.12.0, Subversion's svnserve server process may exit when a client sends certain sequences of protocol commands. This can lead to disruption for users of the server.
{
"affected": [],
"aliases": [
"CVE-2019-0203"
],
"database_specific": {
"cwe_ids": [
"CWE-20",
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-09-26T16:15:00Z",
"severity": "HIGH"
},
"details": "In Apache Subversion versions up to and including 1.9.10, 1.10.4, 1.12.0, Subversion\u0027s svnserve server process may exit when a client sends certain sequences of protocol commands. This can lead to disruption for users of the server.",
"id": "GHSA-2wxr-pw8w-8wx5",
"modified": "2024-04-04T02:00:35Z",
"published": "2022-05-24T16:56:55Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-0203"
},
{
"type": "WEB",
"url": "http://subversion.apache.org/security/CVE-2019-0203-advisory.txt"
}
],
"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-2X7C-W8P7-47F7
Vulnerability from github – Published: 2024-12-25 18:30 – Updated: 2025-04-25 18:31OpenFHE through 1.2.3 has a NULL pointer dereference in BinFHEContext::EvalFloor in lib/binfhe-base-scheme.cpp.
{
"affected": [],
"aliases": [
"CVE-2024-56430"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-12-25T18:15:22Z",
"severity": "MODERATE"
},
"details": "OpenFHE through 1.2.3 has a NULL pointer dereference in BinFHEContext::EvalFloor in lib/binfhe-base-scheme.cpp.",
"id": "GHSA-2x7c-w8p7-47f7",
"modified": "2025-04-25T18:31:10Z",
"published": "2024-12-25T18:30:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-56430"
},
{
"type": "WEB",
"url": "https://github.com/UnionTech-Software/openfhe-PoC"
},
{
"type": "WEB",
"url": "https://github.com/openfheorg/openfhe-development/blob/7b8346f4eac27121543e36c17237b919e03ec058/src/binfhe/lib/binfhe-base-scheme.cpp#L307-L308"
},
{
"type": "WEB",
"url": "https://github.com/openfheorg/openfhe-development/releases/tag/v1.2.3"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2025/04/25/3"
}
],
"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"
}
]
}
GHSA-2X8X-5R7X-JCGH
Vulnerability from github – Published: 2025-05-09 09:33 – Updated: 2025-11-12 21:31In the Linux kernel, the following vulnerability has been resolved:
pds_core: make wait_context part of q_info
Make the wait_context a full part of the q_info struct rather than a stack variable that goes away after pdsc_adminq_post() is done so that the context is still available after the wait loop has given up.
There was a case where a slow development firmware caused the adminq request to time out, but then later the FW finally finished the request and sent the interrupt. The handler tried to complete_all() the completion context that had been created on the stack in pdsc_adminq_post() but no longer existed. This caused bad pointer usage, kernel crashes, and much wailing and gnashing of teeth.
{
"affected": [],
"aliases": [
"CVE-2025-37886"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-09T07:16:09Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\npds_core: make wait_context part of q_info\n\nMake the wait_context a full part of the q_info struct rather\nthan a stack variable that goes away after pdsc_adminq_post()\nis done so that the context is still available after the wait\nloop has given up.\n\nThere was a case where a slow development firmware caused\nthe adminq request to time out, but then later the FW finally\nfinished the request and sent the interrupt. The handler tried\nto complete_all() the completion context that had been created\non the stack in pdsc_adminq_post() but no longer existed.\nThis caused bad pointer usage, kernel crashes, and much wailing\nand gnashing of teeth.",
"id": "GHSA-2x8x-5r7x-jcgh",
"modified": "2025-11-12T21:31:03Z",
"published": "2025-05-09T09:33:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-37886"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1d7c4b2b0bbfb09b55b2dc0e2355d7936bf89381"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3f77c3dfffc7063428b100c4945ca2a7a8680380"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/520f012fe75fb8efc9f16a57ef929a7a2115d892"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/66d7702b42ffdf0dce4808626088268a4e905ca6"
}
],
"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-2XCF-7W6Q-9VXC
Vulnerability from github – Published: 2026-05-28 12:30 – Updated: 2026-06-24 18:32In the Linux kernel, the following vulnerability has been resolved:
platform/chrome: cros_ec_typec: Init mutex in Thunderbolt registration
cros_typec_register_thunderbolt() missed initializing the adata->lock
mutex. This leads to a NULL dereference when the mutex is later
acquired (e.g. in cros_typec_altmode_work()).
Initialize the mutex in cros_typec_register_thunderbolt() to fix the issue.
{
"affected": [],
"aliases": [
"CVE-2026-46134"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-28T10:16:28Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/chrome: cros_ec_typec: Init mutex in Thunderbolt registration\n\ncros_typec_register_thunderbolt() missed initializing the `adata-\u003elock`\nmutex. This leads to a NULL dereference when the mutex is later\nacquired (e.g. in cros_typec_altmode_work()).\n\nInitialize the mutex in cros_typec_register_thunderbolt() to fix the\nissue.",
"id": "GHSA-2xcf-7w6q-9vxc",
"modified": "2026-06-24T18:32:33Z",
"published": "2026-05-28T12:30:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46134"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/23ae72e8c2f1c1d1da8cbd479320ddcfcc9c7435"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3b13d5883a097f538fccbab1c61c95546d29621f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/525cb7ba6661074c1c5cc3772bccc6afab6791ef"
}
],
"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-2XCH-4R76-8CGW
Vulnerability from github – Published: 2024-10-21 15:32 – Updated: 2025-11-04 00:31In the Linux kernel, the following vulnerability has been resolved:
KEYS: prevent NULL pointer dereference in find_asymmetric_key()
In find_asymmetric_key(), if all NULLs are passed in the id_{0,1,2} arguments, the kernel will first emit WARN but then have an oops because id_2 gets dereferenced anyway.
Add the missing id_2 check and move WARN_ON() to the final else branch to avoid duplicate NULL checks.
Found by Linux Verification Center (linuxtesting.org) with Svace static analysis tool.
{
"affected": [],
"aliases": [
"CVE-2024-47743"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-10-21T13:15:04Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nKEYS: prevent NULL pointer dereference in find_asymmetric_key()\n\nIn find_asymmetric_key(), if all NULLs are passed in the id_{0,1,2}\narguments, the kernel will first emit WARN but then have an oops\nbecause id_2 gets dereferenced anyway.\n\nAdd the missing id_2 check and move WARN_ON() to the final else branch\nto avoid duplicate NULL checks.\n\nFound by Linux Verification Center (linuxtesting.org) with Svace static\nanalysis tool.",
"id": "GHSA-2xch-4r76-8cgw",
"modified": "2025-11-04T00:31:38Z",
"published": "2024-10-21T15:32:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-47743"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0d3b0706ada15c333e6f9faf19590ff715e45d1e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/13b5b401ead95b5d8266f64904086c55b6024900"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3322fa8f2aa40b0b3651034cd541647a600cc6c0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/70fd1966c93bf3bfe3fe6d753eb3d83a76597eef"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a3765b497a4f5224cb2f7a6a2d3357d3066214ee"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
}
],
"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-2XCP-78PQ-JQQ3
Vulnerability from github – Published: 2024-07-29 18:30 – Updated: 2025-10-07 18:31In the Linux kernel, the following vulnerability has been resolved:
drm/xe: Check pat.ops before dumping PAT settings
We may leave pat.ops unset when running on brand new platform or when running as a VF. While the former is unlikely, the latter is valid (future) use case and will cause NPD when someone will try to dump PAT settings by debugfs.
It's better to check pointer to pat.ops instead of specific .dump hook, as we have this hook always defined for every .ops variant.
{
"affected": [],
"aliases": [
"CVE-2024-42091"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-07-29T18:15:11Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe: Check pat.ops before dumping PAT settings\n\nWe may leave pat.ops unset when running on brand new platform or\nwhen running as a VF. While the former is unlikely, the latter\nis valid (future) use case and will cause NPD when someone will\ntry to dump PAT settings by debugfs.\n\nIt\u0027s better to check pointer to pat.ops instead of specific .dump\nhook, as we have this hook always defined for every .ops variant.",
"id": "GHSA-2xcp-78pq-jqq3",
"modified": "2025-10-07T18:31:01Z",
"published": "2024-07-29T18:30:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-42091"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/583ce246c7ff9edeb0de49130cdc3d45db8545cb"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a918e771e6fbe1fa68932af5b0cdf473e23090cc"
}
],
"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-2XG7-VCHR-Q6Q4
Vulnerability from github – Published: 2021-12-23 00:01 – Updated: 2021-12-29 00:01An Invalid pointer reference vulnerability exists in gpac 1.1.0 via the gf_svg_node_del function, which causes a segmentation fault and application crash.
{
"affected": [],
"aliases": [
"CVE-2021-45259"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-12-22T17:15:00Z",
"severity": "MODERATE"
},
"details": "An Invalid pointer reference vulnerability exists in gpac 1.1.0 via the gf_svg_node_del function, which causes a segmentation fault and application crash.",
"id": "GHSA-2xg7-vchr-q6q4",
"modified": "2021-12-29T00:01:35Z",
"published": "2021-12-23T00:01:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-45259"
},
{
"type": "WEB",
"url": "https://github.com/gpac/gpac/issues/1986"
}
],
"schema_version": "1.4.0",
"severity": []
}
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.