CWE-476
AllowedNULL Pointer Dereference
Abstraction: Base · Status: Stable
The product dereferences a pointer that it expects to be valid but is NULL.
6314 vulnerabilities reference this CWE, most recent first.
GHSA-3MP3-2M7F-5WFF
Vulnerability from github – Published: 2022-05-24 19:14 – Updated: 2022-05-24 19:14Null Pointer Dereference may occur due to improper validation while processing crafted SDP body in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile
{
"affected": [],
"aliases": [
"CVE-2021-1946"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-09-09T08:15:00Z",
"severity": "CRITICAL"
},
"details": "Null Pointer Dereference may occur due to improper validation while processing crafted SDP body in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile",
"id": "GHSA-3mp3-2m7f-5wff",
"modified": "2022-05-24T19:14:05Z",
"published": "2022-05-24T19:14:05Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-1946"
},
{
"type": "WEB",
"url": "https://www.qualcomm.com/company/product-security/bulletins/september-2021-bulletin"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-3MPJ-G9CW-F3HJ
Vulnerability from github – Published: 2022-09-15 00:00 – Updated: 2022-09-18 00:00A null pointer dereference issue was discovered in fs/io_uring.c in the Linux kernel before 5.15.62. A local user could use this flaw to crash the system or potentially cause a denial of service.
{
"affected": [],
"aliases": [
"CVE-2022-40476"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-09-14T21:15:00Z",
"severity": "MODERATE"
},
"details": "A null pointer dereference issue was discovered in fs/io_uring.c in the Linux kernel before 5.15.62. A local user could use this flaw to crash the system or potentially cause a denial of service.",
"id": "GHSA-3mpj-g9cw-f3hj",
"modified": "2022-09-18T00:00:32Z",
"published": "2022-09-15T00:00:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-40476"
},
{
"type": "WEB",
"url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/fs/io_uring.c?h=v5.15.61\u0026id=3746d62ecf1c872a520c4866118edccb121c44fd"
},
{
"type": "WEB",
"url": "https://lore.kernel.org/lkml/CAO4S-mdVW5GkODk0+vbQexNAAJZopwzFJ9ACvRCJ989fQ4A6Ow@mail.gmail.com"
},
{
"type": "WEB",
"url": "https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.62"
}
],
"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-3MPJ-H64Q-X7GF
Vulnerability from github – Published: 2022-05-24 19:10 – Updated: 2022-05-24 19:10In CODESYS EtherNetIP before 4.1.0.0, specific EtherNet/IP requests may cause a null pointer dereference in the downloaded vulnerable EtherNet/IP stack that is executed by the CODESYS Control runtime system.
{
"affected": [],
"aliases": [
"CVE-2021-36765"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-08-04T14:15:00Z",
"severity": "HIGH"
},
"details": "In CODESYS EtherNetIP before 4.1.0.0, specific EtherNet/IP requests may cause a null pointer dereference in the downloaded vulnerable EtherNet/IP stack that is executed by the CODESYS Control runtime system.",
"id": "GHSA-3mpj-h64q-x7gf",
"modified": "2022-05-24T19:10:00Z",
"published": "2022-05-24T19:10:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-36765"
},
{
"type": "WEB",
"url": "https://customers.codesys.com/index.php?eID=dumpFile\u0026t=f\u0026f=16806\u0026token=3b0c51de5a6e35bccbb413ddaaa56551ca5490f6\u0026download="
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-3MQ4-X52H-FCWC
Vulnerability from github – Published: 2022-05-13 01:25 – Updated: 2022-05-13 01:25ntpd in NTP before 4.2.8p8 allows remote attackers to cause a denial of service (daemon crash) via a crypto-NAK packet. NOTE: this vulnerability exists because of an incorrect fix for CVE-2016-1547.
{
"affected": [],
"aliases": [
"CVE-2016-4957"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2016-07-05T01:59:00Z",
"severity": "HIGH"
},
"details": "ntpd in NTP before 4.2.8p8 allows remote attackers to cause a denial of service (daemon crash) via a crypto-NAK packet. NOTE: this vulnerability exists because of an incorrect fix for CVE-2016-1547.",
"id": "GHSA-3mq4-x52h-fcwc",
"modified": "2022-05-13T01:25:43Z",
"published": "2022-05-13T01:25:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2016-4957"
},
{
"type": "WEB",
"url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-16:24.ntp.asc"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/201607-15"
},
{
"type": "WEB",
"url": "http://bugs.ntp.org/3046"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00018.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00023.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00024.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00028.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00040.html"
},
{
"type": "WEB",
"url": "http://support.ntp.org/bin/view/Main/NtpBug3046"
},
{
"type": "WEB",
"url": "http://support.ntp.org/bin/view/Main/SecurityNotice"
},
{
"type": "WEB",
"url": "http://www.kb.cert.org/vuls/id/321640"
},
{
"type": "WEB",
"url": "http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1036037"
}
],
"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-3MQQ-9W3M-XPJ8
Vulnerability from github – Published: 2025-10-09 21:31 – Updated: 2025-10-09 21:31SSH dissector crash in Wireshark 4.4.0 to 4.4.8 allows denial of service
{
"affected": [],
"aliases": [
"CVE-2025-9817"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-03T08:15:31Z",
"severity": "HIGH"
},
"details": "SSH dissector crash in Wireshark 4.4.0 to 4.4.8 allows denial of service",
"id": "GHSA-3mqq-9w3m-xpj8",
"modified": "2025-10-09T21:31:09Z",
"published": "2025-10-09T21:31:09Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-9817"
},
{
"type": "WEB",
"url": "https://gitlab.com/wireshark/wireshark/-/issues/20642"
},
{
"type": "WEB",
"url": "https://www.wireshark.org/security/wnpa-sec-2025-03.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-3MR7-V482-7RJ9
Vulnerability from github – Published: 2025-03-17 18:31 – Updated: 2025-03-17 18:31In the Linux kernel, the following vulnerability has been resolved:
drm/v3d: Fix null pointer dereference of pointer perfmon
In the unlikely event that pointer perfmon is null the WARN_ON return path occurs after the pointer has already been deferenced. Fix this by only dereferencing perfmon after it has been null checked.
{
"affected": [],
"aliases": [
"CVE-2022-49485"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-26T07:01:24Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/v3d: Fix null pointer dereference of pointer perfmon\n\nIn the unlikely event that pointer perfmon is null the WARN_ON return path\noccurs after the pointer has already been deferenced. Fix this by only\ndereferencing perfmon after it has been null checked.",
"id": "GHSA-3mr7-v482-7rj9",
"modified": "2025-03-17T18:31:50Z",
"published": "2025-03-17T18:31:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49485"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1df8f8901babcc8c8eea2c067179e455b5c828fd"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3b72deb784a7d4ae8519a5c584cd87c4b57aa6c8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4be045434923e549a50846a066a04b7b6c1d6d33"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ce7a1ecf3f9f1fccaf67295307614511d8e11b13"
}
],
"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-3MRV-V95F-R4RX
Vulnerability from github – Published: 2021-12-03 00:00 – Updated: 2023-09-06 03:30AOM v2.0.1 was discovered to contain a NULL pointer dereference via the component rate_hist.c.
{
"affected": [],
"aliases": [
"CVE-2020-36135"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-12-02T22:15:00Z",
"severity": "MODERATE"
},
"details": "AOM v2.0.1 was discovered to contain a NULL pointer dereference via the component rate_hist.c.",
"id": "GHSA-3mrv-v95f-r4rx",
"modified": "2023-09-06T03:30:19Z",
"published": "2021-12-03T00:00:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-36135"
},
{
"type": "WEB",
"url": "https://bugs.chromium.org/p/aomedia/issues/detail?id=2910\u0026q=\u0026can=1"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2023/09/msg00003.html"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202401-32"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2023/dsa-5490"
}
],
"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-3MW4-6RJ6-74G5
Vulnerability from github – Published: 2022-02-09 23:46 – Updated: 2024-11-13 22:33Impact
The implementation of QuantizedMaxPool has an undefined behavior where user controlled inputs can trigger a reference binding to null pointer.
import tensorflow as tf
tf.raw_ops.QuantizedMaxPool(
input = tf.constant([[[[4]]]], dtype=tf.quint8),
min_input = [],
max_input = [1],
ksize = [1, 1, 1, 1],
strides = [1, 1, 1, 1],
padding = "SAME", name=None
)
Patches
We have patched the issue in GitHub commit 53b0dd6dc5957652f35964af16b892ec9af4a559.
The fix will be included in TensorFlow 2.8.0. We will also cherrypick this commit on TensorFlow 2.7.1, TensorFlow 2.6.3, and TensorFlow 2.5.3, as these are also affected and still in supported range.
For more information
Please consult our security guide for more information regarding the security model and how to contact us with issues and questions.
Attribution
This vulnerability has been reported by Faysal Hossain Shezan from University of Virginia.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.5.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow"
},
"ranges": [
{
"events": [
{
"introduced": "2.6.0"
},
{
"fixed": "2.6.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow"
},
"ranges": [
{
"events": [
{
"introduced": "2.7.0"
},
{
"fixed": "2.7.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.7.0"
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow-cpu"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.5.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow-cpu"
},
"ranges": [
{
"events": [
{
"introduced": "2.6.0"
},
{
"fixed": "2.6.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow-cpu"
},
"ranges": [
{
"events": [
{
"introduced": "2.7.0"
},
{
"fixed": "2.7.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.7.0"
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow-gpu"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.5.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow-gpu"
},
"ranges": [
{
"events": [
{
"introduced": "2.6.0"
},
{
"fixed": "2.6.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow-gpu"
},
"ranges": [
{
"events": [
{
"introduced": "2.7.0"
},
{
"fixed": "2.7.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.7.0"
]
}
],
"aliases": [
"CVE-2022-21739"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": true,
"github_reviewed_at": "2022-02-03T20:07:52Z",
"nvd_published_at": "2022-02-03T14:15:00Z",
"severity": "HIGH"
},
"details": "### Impact \nThe [implementation of `QuantizedMaxPool`](https://github.com/tensorflow/tensorflow/blob/5100e359aef5c8021f2e71c7b986420b85ce7b3d/tensorflow/core/kernels/quantized_pooling_ops.cc#L114-L130) has an undefined behavior where user controlled inputs can trigger a reference binding to null pointer.\n\n```python\nimport tensorflow as tf\n\ntf.raw_ops.QuantizedMaxPool(\n input = tf.constant([[[[4]]]], dtype=tf.quint8),\n min_input = [],\n max_input = [1],\n ksize = [1, 1, 1, 1],\n strides = [1, 1, 1, 1],\n padding = \"SAME\", name=None\n)\n```\n\n### Patches\nWe have patched the issue in GitHub commit [53b0dd6dc5957652f35964af16b892ec9af4a559](https://github.com/tensorflow/tensorflow/commit/53b0dd6dc5957652f35964af16b892ec9af4a559).\n\nThe fix will be included in TensorFlow 2.8.0. We will also cherrypick this commit on TensorFlow 2.7.1, TensorFlow 2.6.3, and TensorFlow 2.5.3, as these are also affected and still in supported range.\n\n### For more information\nPlease consult [our security guide](https://github.com/tensorflow/tensorflow/blob/master/SECURITY.md) for more information regarding the security model and how to contact us with issues and questions.\n\n### Attribution\nThis vulnerability has been reported by Faysal Hossain Shezan from University of Virginia.",
"id": "GHSA-3mw4-6rj6-74g5",
"modified": "2024-11-13T22:33:24Z",
"published": "2022-02-09T23:46:46Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/tensorflow/tensorflow/security/advisories/GHSA-3mw4-6rj6-74g5"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-21739"
},
{
"type": "WEB",
"url": "https://github.com/tensorflow/tensorflow/commit/53b0dd6dc5957652f35964af16b892ec9af4a559"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2022-63.yaml"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-gpu/PYSEC-2022-118.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/tensorflow/tensorflow"
},
{
"type": "WEB",
"url": "https://github.com/tensorflow/tensorflow/blob/5100e359aef5c8021f2e71c7b986420b85ce7b3d/tensorflow/core/kernels/quantized_pooling_ops.cc#L114-L130"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Null pointer dereference in TensorFlow"
}
GHSA-3MWH-QCCG-VXM7
Vulnerability from github – Published: 2024-09-18 09:30 – Updated: 2025-11-04 00:31In the Linux kernel, the following vulnerability has been resolved:
apparmor: fix possible NULL pointer dereference
profile->parent->dents[AAFS_PROF_DIR] could be NULL only if its parent is made from __create_missing_ancestors(..) and 'ent->old' is NULL in aa_replace_profiles(..). In that case, it must return an error code and the code, -ENOENT represents its state that the path of its parent is not existed yet.
BUG: kernel NULL pointer dereference, address: 0000000000000030 PGD 0 P4D 0 PREEMPT SMP PTI CPU: 4 PID: 3362 Comm: apparmor_parser Not tainted 6.8.0-24-generic #24 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014 RIP: 0010:aafs_create.constprop.0+0x7f/0x130 Code: 4c 63 e0 48 83 c4 18 4c 89 e0 5b 41 5c 41 5d 41 5e 41 5f 5d 31 d2 31 c9 31 f6 31 ff 45 31 c0 45 31 c9 45 31 d2 c3 cc cc cc cc <4d> 8b 55 30 4d 8d ba a0 00 00 00 4c 89 55 c0 4c 89 ff e8 7a 6a ae RSP: 0018:ffffc9000b2c7c98 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00000000000041ed RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000b2c7cd8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff82baac10 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007be9f22cf740(0000) GS:ffff88817bc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000030 CR3: 0000000134b08000 CR4: 00000000000006f0 Call Trace: ? show_regs+0x6d/0x80 ? __die+0x24/0x80 ? page_fault_oops+0x99/0x1b0 ? kernelmode_fixup_or_oops+0xb2/0x140 ? __bad_area_nosemaphore+0x1a5/0x2c0 ? find_vma+0x34/0x60 ? bad_area_nosemaphore+0x16/0x30 ? do_user_addr_fault+0x2a2/0x6b0 ? exc_page_fault+0x83/0x1b0 ? asm_exc_page_fault+0x27/0x30 ? aafs_create.constprop.0+0x7f/0x130 ? aafs_create.constprop.0+0x51/0x130 __aafs_profile_mkdir+0x3d6/0x480 aa_replace_profiles+0x83f/0x1270 policy_update+0xe3/0x180 profile_load+0xbc/0x150 ? rw_verify_area+0x47/0x140 vfs_write+0x100/0x480 ? __x64_sys_openat+0x55/0xa0 ? syscall_exit_to_user_mode+0x86/0x260 ksys_write+0x73/0x100 __x64_sys_write+0x19/0x30 x64_sys_call+0x7e/0x25c0 do_syscall_64+0x7f/0x180 entry_SYSCALL_64_after_hwframe+0x78/0x80 RIP: 0033:0x7be9f211c574 Code: c7 00 16 00 00 00 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 80 3d d5 ea 0e 00 00 74 13 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 54 c3 0f 1f 00 55 48 89 e5 48 83 ec 20 48 89 RSP: 002b:00007ffd26f2b8c8 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00005d504415e200 RCX: 00007be9f211c574 RDX: 0000000000001fc1 RSI: 00005d504418bc80 RDI: 0000000000000004 RBP: 0000000000001fc1 R08: 0000000000001fc1 R09: 0000000080000000 R10: 0000000000000000 R11: 0000000000000202 R12: 00005d504418bc80 R13: 0000000000000004 R14: 00007ffd26f2b9b0 R15: 00007ffd26f2ba30 Modules linked in: snd_seq_dummy snd_hrtimer qrtr snd_hda_codec_generic snd_hda_intel snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device i2c_i801 snd_timer i2c_smbus qxl snd soundcore drm_ttm_helper lpc_ich ttm joydev input_leds serio_raw mac_hid binfmt_misc msr parport_pc ppdev lp parport efi_pstore nfnetlink dmi_sysfs qemu_fw_cfg ip_tables x_tables autofs4 hid_generic usbhid hid ahci libahci psmouse virtio_rng xhci_pci xhci_pci_renesas CR2: 0000000000000030 ---[ end trace 0000000000000000 ]--- RIP: 0010:aafs_create.constprop.0+0x7f/0x130 Code: 4c 63 e0 48 83 c4 18 4c 89 e0 5b 41 5c 41 5d 41 5e 41 5f 5d 31 d2 31 c9 31 f6 31 ff 45 31 c0 45 31 c9 45 31 d2 c3 cc cc cc cc <4d> 8b 55 30 4d 8d ba a0 00 00 00 4c 89 55 c0 4c 89 ff e8 7a 6a ae RSP: 0018:ffffc9000b2c7c98 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00000000000041ed RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000b2c7cd8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000 ---truncated---
{
"affected": [],
"aliases": [
"CVE-2024-46721"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-09-18T07:15:03Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\napparmor: fix possible NULL pointer dereference\n\nprofile-\u003eparent-\u003edents[AAFS_PROF_DIR] could be NULL only if its parent is made\nfrom __create_missing_ancestors(..) and \u0027ent-\u003eold\u0027 is NULL in\naa_replace_profiles(..).\nIn that case, it must return an error code and the code, -ENOENT represents\nits state that the path of its parent is not existed yet.\n\nBUG: kernel NULL pointer dereference, address: 0000000000000030\nPGD 0 P4D 0\nPREEMPT SMP PTI\nCPU: 4 PID: 3362 Comm: apparmor_parser Not tainted 6.8.0-24-generic #24\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014\nRIP: 0010:aafs_create.constprop.0+0x7f/0x130\nCode: 4c 63 e0 48 83 c4 18 4c 89 e0 5b 41 5c 41 5d 41 5e 41 5f 5d 31 d2 31 c9 31 f6 31 ff 45 31 c0 45 31 c9 45 31 d2 c3 cc cc cc cc \u003c4d\u003e 8b 55 30 4d 8d ba a0 00 00 00 4c 89 55 c0 4c 89 ff e8 7a 6a ae\nRSP: 0018:ffffc9000b2c7c98 EFLAGS: 00010246\nRAX: 0000000000000000 RBX: 00000000000041ed RCX: 0000000000000000\nRDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000\nRBP: ffffc9000b2c7cd8 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000000 R12: ffffffff82baac10\nR13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000\nFS: 00007be9f22cf740(0000) GS:ffff88817bc00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000000000000030 CR3: 0000000134b08000 CR4: 00000000000006f0\nCall Trace:\n \u003cTASK\u003e\n ? show_regs+0x6d/0x80\n ? __die+0x24/0x80\n ? page_fault_oops+0x99/0x1b0\n ? kernelmode_fixup_or_oops+0xb2/0x140\n ? __bad_area_nosemaphore+0x1a5/0x2c0\n ? find_vma+0x34/0x60\n ? bad_area_nosemaphore+0x16/0x30\n ? do_user_addr_fault+0x2a2/0x6b0\n ? exc_page_fault+0x83/0x1b0\n ? asm_exc_page_fault+0x27/0x30\n ? aafs_create.constprop.0+0x7f/0x130\n ? aafs_create.constprop.0+0x51/0x130\n __aafs_profile_mkdir+0x3d6/0x480\n aa_replace_profiles+0x83f/0x1270\n policy_update+0xe3/0x180\n profile_load+0xbc/0x150\n ? rw_verify_area+0x47/0x140\n vfs_write+0x100/0x480\n ? __x64_sys_openat+0x55/0xa0\n ? syscall_exit_to_user_mode+0x86/0x260\n ksys_write+0x73/0x100\n __x64_sys_write+0x19/0x30\n x64_sys_call+0x7e/0x25c0\n do_syscall_64+0x7f/0x180\n entry_SYSCALL_64_after_hwframe+0x78/0x80\nRIP: 0033:0x7be9f211c574\nCode: c7 00 16 00 00 00 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 80 3d d5 ea 0e 00 00 74 13 b8 01 00 00 00 0f 05 \u003c48\u003e 3d 00 f0 ff ff 77 54 c3 0f 1f 00 55 48 89 e5 48 83 ec 20 48 89\nRSP: 002b:00007ffd26f2b8c8 EFLAGS: 00000202 ORIG_RAX: 0000000000000001\nRAX: ffffffffffffffda RBX: 00005d504415e200 RCX: 00007be9f211c574\nRDX: 0000000000001fc1 RSI: 00005d504418bc80 RDI: 0000000000000004\nRBP: 0000000000001fc1 R08: 0000000000001fc1 R09: 0000000080000000\nR10: 0000000000000000 R11: 0000000000000202 R12: 00005d504418bc80\nR13: 0000000000000004 R14: 00007ffd26f2b9b0 R15: 00007ffd26f2ba30\n \u003c/TASK\u003e\nModules linked in: snd_seq_dummy snd_hrtimer qrtr snd_hda_codec_generic snd_hda_intel snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device i2c_i801 snd_timer i2c_smbus qxl snd soundcore drm_ttm_helper lpc_ich ttm joydev input_leds serio_raw mac_hid binfmt_misc msr parport_pc ppdev lp parport efi_pstore nfnetlink dmi_sysfs qemu_fw_cfg ip_tables x_tables autofs4 hid_generic usbhid hid ahci libahci psmouse virtio_rng xhci_pci xhci_pci_renesas\nCR2: 0000000000000030\n---[ end trace 0000000000000000 ]---\nRIP: 0010:aafs_create.constprop.0+0x7f/0x130\nCode: 4c 63 e0 48 83 c4 18 4c 89 e0 5b 41 5c 41 5d 41 5e 41 5f 5d 31 d2 31 c9 31 f6 31 ff 45 31 c0 45 31 c9 45 31 d2 c3 cc cc cc cc \u003c4d\u003e 8b 55 30 4d 8d ba a0 00 00 00 4c 89 55 c0 4c 89 ff e8 7a 6a ae\nRSP: 0018:ffffc9000b2c7c98 EFLAGS: 00010246\nRAX: 0000000000000000 RBX: 00000000000041ed RCX: 0000000000000000\nRDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000\nRBP: ffffc9000b2c7cd8 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000\n---truncated---",
"id": "GHSA-3mwh-qccg-vxm7",
"modified": "2025-11-04T00:31:27Z",
"published": "2024-09-18T09:30:35Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-46721"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/09b2d107fe63e55b6ae643f9f26bf8eb14a261d9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3dd384108d53834002be5630132ad5c3f32166ad"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/52338a3aa772762b8392ce7cac106c1099aeab85"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/59f742e55a469ef36c5c1533b6095a103b61eda8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/730ee2686af0d55372e97a2695005ff142702363"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8d9da10a392a32368392f7a16775e1f36e2a5346"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c49bbe69ee152bd9c1c1f314c0f582e76c578f64"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e3c7d23f7a5c0b11ba0093cea32261ab8098b94e"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html"
},
{
"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-3P2H-8X46-GVG6
Vulnerability from github – Published: 2024-05-14 15:32 – Updated: 2026-01-22 21:33In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: l2cap: fix null-ptr-deref in l2cap_chan_timeout
There is a race condition between l2cap_chan_timeout() and l2cap_chan_del(). When we use l2cap_chan_del() to delete the channel, the chan->conn will be set to null. But the conn could be dereferenced again in the mutex_lock() of l2cap_chan_timeout(). As a result the null pointer dereference bug will happen. The KASAN report triggered by POC is shown below:
[ 472.074580] ================================================================== [ 472.075284] BUG: KASAN: null-ptr-deref in mutex_lock+0x68/0xc0 [ 472.075308] Write of size 8 at addr 0000000000000158 by task kworker/0:0/7 [ 472.075308] [ 472.075308] CPU: 0 PID: 7 Comm: kworker/0:0 Not tainted 6.9.0-rc5-00356-g78c0094a146b #36 [ 472.075308] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu4 [ 472.075308] Workqueue: events l2cap_chan_timeout [ 472.075308] Call Trace: [ 472.075308] [ 472.075308] dump_stack_lvl+0x137/0x1a0 [ 472.075308] print_report+0x101/0x250 [ 472.075308] ? __virt_addr_valid+0x77/0x160 [ 472.075308] ? mutex_lock+0x68/0xc0 [ 472.075308] kasan_report+0x139/0x170 [ 472.075308] ? mutex_lock+0x68/0xc0 [ 472.075308] kasan_check_range+0x2c3/0x2e0 [ 472.075308] mutex_lock+0x68/0xc0 [ 472.075308] l2cap_chan_timeout+0x181/0x300 [ 472.075308] process_one_work+0x5d2/0xe00 [ 472.075308] worker_thread+0xe1d/0x1660 [ 472.075308] ? pr_cont_work+0x5e0/0x5e0 [ 472.075308] kthread+0x2b7/0x350 [ 472.075308] ? pr_cont_work+0x5e0/0x5e0 [ 472.075308] ? kthread_blkcg+0xd0/0xd0 [ 472.075308] ret_from_fork+0x4d/0x80 [ 472.075308] ? kthread_blkcg+0xd0/0xd0 [ 472.075308] ret_from_fork_asm+0x11/0x20 [ 472.075308] [ 472.075308] ================================================================== [ 472.094860] Disabling lock debugging due to kernel taint [ 472.096136] BUG: kernel NULL pointer dereference, address: 0000000000000158 [ 472.096136] #PF: supervisor write access in kernel mode [ 472.096136] #PF: error_code(0x0002) - not-present page [ 472.096136] PGD 0 P4D 0 [ 472.096136] Oops: 0002 [#1] PREEMPT SMP KASAN NOPTI [ 472.096136] CPU: 0 PID: 7 Comm: kworker/0:0 Tainted: G B 6.9.0-rc5-00356-g78c0094a146b #36 [ 472.096136] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu4 [ 472.096136] Workqueue: events l2cap_chan_timeout [ 472.096136] RIP: 0010:mutex_lock+0x88/0xc0 [ 472.096136] Code: be 08 00 00 00 e8 f8 23 1f fd 4c 89 f7 be 08 00 00 00 e8 eb 23 1f fd 42 80 3c 23 00 74 08 48 88 [ 472.096136] RSP: 0018:ffff88800744fc78 EFLAGS: 00000246 [ 472.096136] RAX: 0000000000000000 RBX: 1ffff11000e89f8f RCX: ffffffff8457c865 [ 472.096136] RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff88800744fc78 [ 472.096136] RBP: 0000000000000158 R08: ffff88800744fc7f R09: 1ffff11000e89f8f [ 472.096136] R10: dffffc0000000000 R11: ffffed1000e89f90 R12: dffffc0000000000 [ 472.096136] R13: 0000000000000158 R14: ffff88800744fc78 R15: ffff888007405a00 [ 472.096136] FS: 0000000000000000(0000) GS:ffff88806d200000(0000) knlGS:0000000000000000 [ 472.096136] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 472.096136] CR2: 0000000000000158 CR3: 000000000da32000 CR4: 00000000000006f0 [ 472.096136] Call Trace: [ 472.096136] [ 472.096136] ? __die_body+0x8d/0xe0 [ 472.096136] ? page_fault_oops+0x6b8/0x9a0 [ 472.096136] ? kernelmode_fixup_or_oops+0x20c/0x2a0 [ 472.096136] ? do_user_addr_fault+0x1027/0x1340 [ 472.096136] ? _printk+0x7a/0xa0 [ 472.096136] ? mutex_lock+0x68/0xc0 [ 472.096136] ? add_taint+0x42/0xd0 [ 472.096136] ? exc_page_fault+0x6a/0x1b0 [ 472.096136] ? asm_exc_page_fault+0x26/0x30 [ 472.096136] ? mutex_lock+0x75/0xc0 [ 472.096136] ? mutex_lock+0x88/0xc0 [ 472.096136] ? mutex_lock+0x75/0xc0 [ 472.096136] l2cap_chan_timeo ---truncated---
{
"affected": [],
"aliases": [
"CVE-2024-27399"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-14T15:12:28Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: l2cap: fix null-ptr-deref in l2cap_chan_timeout\n\nThere is a race condition between l2cap_chan_timeout() and\nl2cap_chan_del(). When we use l2cap_chan_del() to delete the\nchannel, the chan-\u003econn will be set to null. But the conn could\nbe dereferenced again in the mutex_lock() of l2cap_chan_timeout().\nAs a result the null pointer dereference bug will happen. The\nKASAN report triggered by POC is shown below:\n\n[ 472.074580] ==================================================================\n[ 472.075284] BUG: KASAN: null-ptr-deref in mutex_lock+0x68/0xc0\n[ 472.075308] Write of size 8 at addr 0000000000000158 by task kworker/0:0/7\n[ 472.075308]\n[ 472.075308] CPU: 0 PID: 7 Comm: kworker/0:0 Not tainted 6.9.0-rc5-00356-g78c0094a146b #36\n[ 472.075308] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu4\n[ 472.075308] Workqueue: events l2cap_chan_timeout\n[ 472.075308] Call Trace:\n[ 472.075308] \u003cTASK\u003e\n[ 472.075308] dump_stack_lvl+0x137/0x1a0\n[ 472.075308] print_report+0x101/0x250\n[ 472.075308] ? __virt_addr_valid+0x77/0x160\n[ 472.075308] ? mutex_lock+0x68/0xc0\n[ 472.075308] kasan_report+0x139/0x170\n[ 472.075308] ? mutex_lock+0x68/0xc0\n[ 472.075308] kasan_check_range+0x2c3/0x2e0\n[ 472.075308] mutex_lock+0x68/0xc0\n[ 472.075308] l2cap_chan_timeout+0x181/0x300\n[ 472.075308] process_one_work+0x5d2/0xe00\n[ 472.075308] worker_thread+0xe1d/0x1660\n[ 472.075308] ? pr_cont_work+0x5e0/0x5e0\n[ 472.075308] kthread+0x2b7/0x350\n[ 472.075308] ? pr_cont_work+0x5e0/0x5e0\n[ 472.075308] ? kthread_blkcg+0xd0/0xd0\n[ 472.075308] ret_from_fork+0x4d/0x80\n[ 472.075308] ? kthread_blkcg+0xd0/0xd0\n[ 472.075308] ret_from_fork_asm+0x11/0x20\n[ 472.075308] \u003c/TASK\u003e\n[ 472.075308] ==================================================================\n[ 472.094860] Disabling lock debugging due to kernel taint\n[ 472.096136] BUG: kernel NULL pointer dereference, address: 0000000000000158\n[ 472.096136] #PF: supervisor write access in kernel mode\n[ 472.096136] #PF: error_code(0x0002) - not-present page\n[ 472.096136] PGD 0 P4D 0\n[ 472.096136] Oops: 0002 [#1] PREEMPT SMP KASAN NOPTI\n[ 472.096136] CPU: 0 PID: 7 Comm: kworker/0:0 Tainted: G B 6.9.0-rc5-00356-g78c0094a146b #36\n[ 472.096136] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu4\n[ 472.096136] Workqueue: events l2cap_chan_timeout\n[ 472.096136] RIP: 0010:mutex_lock+0x88/0xc0\n[ 472.096136] Code: be 08 00 00 00 e8 f8 23 1f fd 4c 89 f7 be 08 00 00 00 e8 eb 23 1f fd 42 80 3c 23 00 74 08 48 88\n[ 472.096136] RSP: 0018:ffff88800744fc78 EFLAGS: 00000246\n[ 472.096136] RAX: 0000000000000000 RBX: 1ffff11000e89f8f RCX: ffffffff8457c865\n[ 472.096136] RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff88800744fc78\n[ 472.096136] RBP: 0000000000000158 R08: ffff88800744fc7f R09: 1ffff11000e89f8f\n[ 472.096136] R10: dffffc0000000000 R11: ffffed1000e89f90 R12: dffffc0000000000\n[ 472.096136] R13: 0000000000000158 R14: ffff88800744fc78 R15: ffff888007405a00\n[ 472.096136] FS: 0000000000000000(0000) GS:ffff88806d200000(0000) knlGS:0000000000000000\n[ 472.096136] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 472.096136] CR2: 0000000000000158 CR3: 000000000da32000 CR4: 00000000000006f0\n[ 472.096136] Call Trace:\n[ 472.096136] \u003cTASK\u003e\n[ 472.096136] ? __die_body+0x8d/0xe0\n[ 472.096136] ? page_fault_oops+0x6b8/0x9a0\n[ 472.096136] ? kernelmode_fixup_or_oops+0x20c/0x2a0\n[ 472.096136] ? do_user_addr_fault+0x1027/0x1340\n[ 472.096136] ? _printk+0x7a/0xa0\n[ 472.096136] ? mutex_lock+0x68/0xc0\n[ 472.096136] ? add_taint+0x42/0xd0\n[ 472.096136] ? exc_page_fault+0x6a/0x1b0\n[ 472.096136] ? asm_exc_page_fault+0x26/0x30\n[ 472.096136] ? mutex_lock+0x75/0xc0\n[ 472.096136] ? mutex_lock+0x88/0xc0\n[ 472.096136] ? mutex_lock+0x75/0xc0\n[ 472.096136] l2cap_chan_timeo\n---truncated---",
"id": "GHSA-3p2h-8x46-gvg6",
"modified": "2026-01-22T21:33:38Z",
"published": "2024-05-14T15:32:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-27399"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/06acb75e7ed600d0bbf7bff5628aa8f24a97978c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6466ee65e5b27161c846c73ef407f49dfa1bd1d9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8960ff650aec70485b40771cd8e6e8c4cb467d33"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/955b5b6c54d95b5e7444dfc81c95c8e013f27ac0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/adf0398cee86643b8eacde95f17d073d022f782c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e137e2ba96e51902dc2878131823a96bf8e638ae"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e97e16433eb4533083b096a3824b93a5ca3aee79"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/eb86f955488c39526534211f2610e48a5cf8ead4"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00019.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DW2MIOIMOFUSNLHLRYX23AFR36BMKD65"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OTB4HWU2PTVW5NEYHHLOCXDKG3PYA534"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20240926-0001"
}
],
"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.