CWE-476
AllowedNULL Pointer Dereference
Abstraction: Base · Status: Stable
The product dereferences a pointer that it expects to be valid but is NULL.
6889 vulnerabilities reference this CWE, most recent first.
GHSA-QW42-C97G-78X6
Vulnerability from github – Published: 2024-02-29 06:30 – Updated: 2024-12-09 21:31In the Linux kernel, the following vulnerability has been resolved:
usb: hub: Guard against accesses to uninitialized BOS descriptors
Many functions in drivers/usb/core/hub.c and drivers/usb/core/hub.h access fields inside udev->bos without checking if it was allocated and initialized. If usb_get_bos_descriptor() fails for whatever reason, udev->bos will be NULL and those accesses will result in a crash:
BUG: kernel NULL pointer dereference, address: 0000000000000018 PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 5 PID: 17818 Comm: kworker/5:1 Tainted: G W 5.15.108-18910-gab0e1cb584e1 #1 Hardware name: Google Kindred/Kindred, BIOS Google_Kindred.12672.413.0 02/03/2021 Workqueue: usb_hub_wq hub_event RIP: 0010:hub_port_reset+0x193/0x788 Code: 89 f7 e8 20 f7 15 00 48 8b 43 08 80 b8 96 03 00 00 03 75 36 0f b7 88 92 03 00 00 81 f9 10 03 00 00 72 27 48 8b 80 a8 03 00 00 <48> 83 78 18 00 74 19 48 89 df 48 8b 75 b0 ba 02 00 00 00 4c 89 e9 RSP: 0018:ffffab740c53fcf8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffffa1bc5f678000 RCX: 0000000000000310 RDX: fffffffffffffdff RSI: 0000000000000286 RDI: ffffa1be9655b840 RBP: ffffab740c53fd70 R08: 00001b7d5edaa20c R09: ffffffffb005e060 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: ffffab740c53fd3e R14: 0000000000000032 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffffa1be96540000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000018 CR3: 000000022e80c005 CR4: 00000000003706e0 Call Trace: hub_event+0x73f/0x156e ? hub_activate+0x5b7/0x68f process_one_work+0x1a2/0x487 worker_thread+0x11a/0x288 kthread+0x13a/0x152 ? process_one_work+0x487/0x487 ? kthread_associate_blkcg+0x70/0x70 ret_from_fork+0x1f/0x30
Fall back to a default behavior if the BOS descriptor isn't accessible and skip all the functionalities that depend on it: LPM support checks, Super Speed capabilitiy checks, U1/U2 states setup.
{
"affected": [],
"aliases": [
"CVE-2023-52477"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-29T06:15:45Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: hub: Guard against accesses to uninitialized BOS descriptors\n\nMany functions in drivers/usb/core/hub.c and drivers/usb/core/hub.h\naccess fields inside udev-\u003ebos without checking if it was allocated and\ninitialized. If usb_get_bos_descriptor() fails for whatever\nreason, udev-\u003ebos will be NULL and those accesses will result in a\ncrash:\n\nBUG: kernel NULL pointer dereference, address: 0000000000000018\nPGD 0 P4D 0\nOops: 0000 [#1] PREEMPT SMP NOPTI\nCPU: 5 PID: 17818 Comm: kworker/5:1 Tainted: G W 5.15.108-18910-gab0e1cb584e1 #1 \u003cHASH:1f9e 1\u003e\nHardware name: Google Kindred/Kindred, BIOS Google_Kindred.12672.413.0 02/03/2021\nWorkqueue: usb_hub_wq hub_event\nRIP: 0010:hub_port_reset+0x193/0x788\nCode: 89 f7 e8 20 f7 15 00 48 8b 43 08 80 b8 96 03 00 00 03 75 36 0f b7 88 92 03 00 00 81 f9 10 03 00 00 72 27 48 8b 80 a8 03 00 00 \u003c48\u003e 83 78 18 00 74 19 48 89 df 48 8b 75 b0 ba 02 00 00 00 4c 89 e9\nRSP: 0018:ffffab740c53fcf8 EFLAGS: 00010246\nRAX: 0000000000000000 RBX: ffffa1bc5f678000 RCX: 0000000000000310\nRDX: fffffffffffffdff RSI: 0000000000000286 RDI: ffffa1be9655b840\nRBP: ffffab740c53fd70 R08: 00001b7d5edaa20c R09: ffffffffb005e060\nR10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000\nR13: ffffab740c53fd3e R14: 0000000000000032 R15: 0000000000000000\nFS: 0000000000000000(0000) GS:ffffa1be96540000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000000000000018 CR3: 000000022e80c005 CR4: 00000000003706e0\nCall Trace:\nhub_event+0x73f/0x156e\n? hub_activate+0x5b7/0x68f\nprocess_one_work+0x1a2/0x487\nworker_thread+0x11a/0x288\nkthread+0x13a/0x152\n? process_one_work+0x487/0x487\n? kthread_associate_blkcg+0x70/0x70\nret_from_fork+0x1f/0x30\n\nFall back to a default behavior if the BOS descriptor isn\u0027t accessible\nand skip all the functionalities that depend on it: LPM support checks,\nSuper Speed capabilitiy checks, U1/U2 states setup.",
"id": "GHSA-qw42-c97g-78x6",
"modified": "2024-12-09T21:31:00Z",
"published": "2024-02-29T06:30:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52477"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/136f69a04e71ba3458d137aec3bb2ce1232c0289"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/241f230324337ed5eae3846a554fb6d15169872c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/528f0ba9f7a4bc1b61c9b6eb591ff97ca37cac6b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6ad3e9fd3632106696692232bf7ff88b9f7e1bc3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8e7346bfea56453e31b7421c1c17ca2fb9ed613d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c64e4dca9aefd232b17ac4c779b608b286654e81"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f74a7afc224acd5e922c7a2e52244d891bbe44ee"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/fb9895ab9533534335fa83d70344b397ac862c81"
}
],
"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-QW5V-WMJR-8FPC
Vulnerability from github – Published: 2024-08-21 09:31 – Updated: 2024-09-12 15:32In the Linux kernel, the following vulnerability has been resolved:
nfsd: fix handling of cached open files in nfsd4_open codepath
Commit fb70bf124b05 ("NFSD: Instantiate a struct file when creating a regular NFSv4 file") added the ability to cache an open fd over a compound. There are a couple of problems with the way this currently works:
It's racy, as a newly-created nfsd_file can end up with its PENDING bit cleared while the nf is hashed, and the nf_file pointer is still zeroed out. Other tasks can find it in this state and they expect to see a valid nf_file, and can oops if nf_file is NULL.
Also, there is no guarantee that we'll end up creating a new nfsd_file if one is already in the hash. If an extant entry is in the hash with a valid nf_file, nfs4_get_vfs_file will clobber its nf_file pointer with the value of op_file and the old nf_file will leak.
Fix both issues by making a new nfsd_file_acquirei_opened variant that takes an optional file pointer. If one is present when this is called, we'll take a new reference to it instead of trying to open the file. If the nfsd_file already has a valid nf_file, we'll just ignore the optional file and pass the nfsd_file back as-is.
Also rework the tracepoints a bit to allow for an "opened" variant and don't try to avoid counting acquisitions in the case where we already have a cached open file.
{
"affected": [],
"aliases": [
"CVE-2023-52909"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-08-21T07:15:06Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: fix handling of cached open files in nfsd4_open codepath\n\nCommit fb70bf124b05 (\"NFSD: Instantiate a struct file when creating a\nregular NFSv4 file\") added the ability to cache an open fd over a\ncompound. There are a couple of problems with the way this currently\nworks:\n\nIt\u0027s racy, as a newly-created nfsd_file can end up with its PENDING bit\ncleared while the nf is hashed, and the nf_file pointer is still zeroed\nout. Other tasks can find it in this state and they expect to see a\nvalid nf_file, and can oops if nf_file is NULL.\n\nAlso, there is no guarantee that we\u0027ll end up creating a new nfsd_file\nif one is already in the hash. If an extant entry is in the hash with a\nvalid nf_file, nfs4_get_vfs_file will clobber its nf_file pointer with\nthe value of op_file and the old nf_file will leak.\n\nFix both issues by making a new nfsd_file_acquirei_opened variant that\ntakes an optional file pointer. If one is present when this is called,\nwe\u0027ll take a new reference to it instead of trying to open the file. If\nthe nfsd_file already has a valid nf_file, we\u0027ll just ignore the\noptional file and pass the nfsd_file back as-is.\n\nAlso rework the tracepoints a bit to allow for an \"opened\" variant and\ndon\u0027t try to avoid counting acquisitions in the case where we already\nhave a cached open file.",
"id": "GHSA-qw5v-wmjr-8fpc",
"modified": "2024-09-12T15:32:59Z",
"published": "2024-08-21T09:31:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52909"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0b3a551fa58b4da941efeb209b3770868e2eddd7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0b778361998d6c6356b8d2fc7ddf025fb3224654"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/45c08a752982116f3287afcd1bd9c50f4fab0c28"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/973acfdfe90c8a4e58ade97ff0653a498531ff2e"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-QW74-C3MF-V699
Vulnerability from github – Published: 2024-07-09 12:30 – Updated: 2024-10-08 09:30A vulnerability has been identified in JT Open (All versions < V11.5), PLM XML SDK (All versions < V7.1.0.014). The affected applications contain a null pointer dereference vulnerability while parsing specially crafted XML files. An attacker could leverage this vulnerability to crash the application causing denial of service condition.
{
"affected": [],
"aliases": [
"CVE-2024-37996"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-07-09T12:15:15Z",
"severity": "MODERATE"
},
"details": "A vulnerability has been identified in JT Open (All versions \u003c V11.5), PLM XML SDK (All versions \u003c V7.1.0.014). The affected applications contain a null pointer dereference vulnerability while parsing specially crafted XML files. An attacker could leverage this vulnerability to crash the application causing denial of service condition.",
"id": "GHSA-qw74-c3mf-v699",
"modified": "2024-10-08T09:30:51Z",
"published": "2024-07-09T12:30:57Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-37996"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-824889.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-959281.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:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/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-QW8G-4J5W-5J26
Vulnerability from github – Published: 2025-01-21 12:30 – Updated: 2025-01-31 15:30In the Linux kernel, the following vulnerability has been resolved:
gve: guard XSK operations on the existence of queues
This patch predicates the enabling and disabling of XSK pools on the existence of queues. As it stands, if the interface is down, disabling or enabling XSK pools would result in a crash, as the RX queue pointer would be NULL. XSK pool registration will occur as part of the next interface up.
Similarly, xsk_wakeup needs be guarded against queues disappearing while the function is executing, so a check against the GVE_PRIV_FLAGS_NAPI_ENABLED flag is added to synchronize with the disabling of the bit and the synchronize_net() in gve_turndown.
{
"affected": [],
"aliases": [
"CVE-2024-57933"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-01-21T12:15:26Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ngve: guard XSK operations on the existence of queues\n\nThis patch predicates the enabling and disabling of XSK pools on the\nexistence of queues. As it stands, if the interface is down, disabling\nor enabling XSK pools would result in a crash, as the RX queue pointer\nwould be NULL. XSK pool registration will occur as part of the next\ninterface up.\n\nSimilarly, xsk_wakeup needs be guarded against queues disappearing\nwhile the function is executing, so a check against the\nGVE_PRIV_FLAGS_NAPI_ENABLED flag is added to synchronize with the\ndisabling of the bit and the synchronize_net() in gve_turndown.",
"id": "GHSA-qw8g-4j5w-5j26",
"modified": "2025-01-31T15:30:44Z",
"published": "2025-01-21T12:30:48Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-57933"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/40338d7987d810fcaa95c500b1068a52b08eec9b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/771d66f2bd8c4dba1286a9163ab982cecd825718"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8e8d7037c89437af12725f454e2eaf40e8166c0f"
}
],
"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-QW8R-2Q96-Q84J
Vulnerability from github – Published: 2022-05-24 19:08 – Updated: 2022-05-24 19:08An issue was discovered in box_code_apple.c:119 in Gpac MP4Box 0.8.0, allows attackers to cause a Denial of Service due to an invalid read on function ilst_item_Read.
{
"affected": [],
"aliases": [
"CVE-2020-19488"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-07-21T18:15:00Z",
"severity": "MODERATE"
},
"details": "An issue was discovered in box_code_apple.c:119 in Gpac MP4Box 0.8.0, allows attackers to cause a Denial of Service due to an invalid read on function ilst_item_Read.",
"id": "GHSA-qw8r-2q96-q84j",
"modified": "2022-05-24T19:08:32Z",
"published": "2022-05-24T19:08:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-19488"
},
{
"type": "WEB",
"url": "https://github.com/gpac/gpac/issues/1263"
},
{
"type": "WEB",
"url": "https://github.com/gpac/gpac/commit/6170024568f4dda310e98ef7508477b425c58d09"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-QWHM-4RH7-6QR6
Vulnerability from github – Published: 2023-03-16 15:30 – Updated: 2025-02-26 18:30An issue found in TCPprep v.4.4.3 allows a remote attacker to cause a denial of service via the macinstring function.
{
"affected": [],
"aliases": [
"CVE-2023-27786"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-03-16T15:15:00Z",
"severity": "HIGH"
},
"details": "An issue found in TCPprep v.4.4.3 allows a remote attacker to cause a denial of service via the macinstring function.",
"id": "GHSA-qwhm-4rh7-6qr6",
"modified": "2025-02-26T18:30:36Z",
"published": "2023-03-16T15:30:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-27786"
},
{
"type": "WEB",
"url": "https://github.com/appneta/tcpreplay/issues/782"
},
{
"type": "WEB",
"url": "https://github.com/appneta/tcpreplay/pull/783"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R3ER3YTFR3XIDMYEB7LMFWFTPVQALBHC"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UE3J4LKYFNKPKNSLDQK4JG36THQMQH3V"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UK2BRH3W3ECF5FDXP6QM3ZEDTHIOE4M5"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R3ER3YTFR3XIDMYEB7LMFWFTPVQALBHC"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UE3J4LKYFNKPKNSLDQK4JG36THQMQH3V"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UK2BRH3W3ECF5FDXP6QM3ZEDTHIOE4M5"
}
],
"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-QWP3-C8JM-P6V6
Vulnerability from github – Published: 2022-05-14 00:54 – Updated: 2022-05-14 00:54An issue was discovered in the Linux kernel through 4.17.10. There is a NULL pointer dereference and panic in hfsplus_lookup() in fs/hfsplus/dir.c when opening a file (that is purportedly a hard link) in an hfs+ filesystem that has malformed catalog data, and is mounted read-only without a metadata directory.
{
"affected": [],
"aliases": [
"CVE-2018-14617"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-07-27T04:29:00Z",
"severity": "HIGH"
},
"details": "An issue was discovered in the Linux kernel through 4.17.10. There is a NULL pointer dereference and panic in hfsplus_lookup() in fs/hfsplus/dir.c when opening a file (that is purportedly a hard link) in an hfs+ filesystem that has malformed catalog data, and is mounted read-only without a metadata directory.",
"id": "GHSA-qwp3-c8jm-p6v6",
"modified": "2022-05-14T00:54:11Z",
"published": "2022-05-14T00:54:11Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-14617"
},
{
"type": "WEB",
"url": "https://bugzilla.kernel.org/show_bug.cgi?id=200297"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3821-1"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3821-2"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4094-1"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4118-1"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2018/dsa-4308"
},
{
"type": "WEB",
"url": "https://www.spinics.net/lists/linux-fsdevel/msg130021.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/104917"
}
],
"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-QWWX-92M3-HF86
Vulnerability from github – Published: 2026-07-19 18:31 – Updated: 2026-08-13 15:34In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: ISO: drop ISO_END frames received without prior ISO_START
ISO data PDUs carry a packet-boundary flag indicating START, CONT, END or SINGLE. The ISO_CONT branch of iso_recv() guards against a missing ISO_START by checking conn->rx_len before touching conn->rx_skb, but ISO_END does not.
If a peer sends an ISO_END as the first packet on a fresh ISO connection, conn->rx_skb is still NULL and conn->rx_len is zero, so skb_put(conn->rx_skb, ...) dereferences NULL and oopses. For BIS, where receivers sync to a broadcaster without pairing, any broadcaster on the air can trigger this.
Mirror the ISO_CONT check at the top of ISO_END so a stray end fragment is logged and dropped instead of crashing the host.
{
"affected": [],
"aliases": [
"CVE-2026-64128"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-19T16:17:54Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: drop ISO_END frames received without prior ISO_START\n\nISO data PDUs carry a packet-boundary flag indicating START, CONT, END\nor SINGLE. The ISO_CONT branch of iso_recv() guards against a missing\nISO_START by checking conn-\u003erx_len before touching conn-\u003erx_skb, but\nISO_END does not.\n\nIf a peer sends an ISO_END as the first packet on a fresh ISO\nconnection, conn-\u003erx_skb is still NULL and conn-\u003erx_len is zero, so\nskb_put(conn-\u003erx_skb, ...) dereferences NULL and oopses. For BIS,\nwhere receivers sync to a broadcaster without pairing, any broadcaster\non the air can trigger this.\n\nMirror the ISO_CONT check at the top of ISO_END so a stray end fragment\nis logged and dropped instead of crashing the host.",
"id": "GHSA-qwwx-92m3-hf86",
"modified": "2026-08-13T15:34:13Z",
"published": "2026-07-19T18:31:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64128"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1c3d1e1696b72579b970e17999c503a14535205b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/39f4a82e80c8f5ed2d6952d73fbafc895721a728"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3af41ee7ebecb0d5c8a504861f6cfad31345310f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/61f2410a96dee808029e2ae4d6ef2dd635f3477f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/84c24fb151fc1179355296d7ff29129ac7c42129"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e3a799881c12d27596232636a607e2e3fa448d63"
}
],
"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-QX33-QXJC-P36P
Vulnerability from github – Published: 2023-01-27 18:30 – Updated: 2025-03-28 18:32An illegal memory access flaw was found in the binutils package. Parsing an ELF file containing corrupt symbol version information may result in a denial of service. This issue is the result of an incomplete fix for CVE-2020-16599.
{
"affected": [],
"aliases": [
"CVE-2022-4285"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-01-27T18:15:00Z",
"severity": "MODERATE"
},
"details": "An illegal memory access flaw was found in the binutils package. Parsing an ELF file containing corrupt symbol version information may result in a denial of service. This issue is the result of an incomplete fix for CVE-2020-16599.",
"id": "GHSA-qx33-qxjc-p36p",
"modified": "2025-03-28T18:32:44Z",
"published": "2023-01-27T18:30:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-4285"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2150768"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202309-15"
},
{
"type": "WEB",
"url": "https://sourceware.org/bugzilla/show_bug.cgi?id=29699"
},
{
"type": "WEB",
"url": "https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git%3Bh=5c831a3c7f3ca98d6aba1200353311e1a1f84c70"
},
{
"type": "WEB",
"url": "https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=5c831a3c7f3ca98d6aba1200353311e1a1f84c70"
}
],
"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-QX5F-76WJ-2XM5
Vulnerability from github – Published: 2024-06-20 12:31 – Updated: 2025-01-07 00:31In the Linux kernel, the following vulnerability has been resolved:
bpf: Guard against accessing NULL pt_regs in bpf_get_task_stack()
task_pt_regs() can return NULL on powerpc for kernel threads. This is then used in __bpf_get_stack() to check for user mode, resulting in a kernel oops. Guard against this by checking return value of task_pt_regs() before trying to obtain the call chain.
{
"affected": [],
"aliases": [
"CVE-2022-48770"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-06-20T12:15:14Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Guard against accessing NULL pt_regs in bpf_get_task_stack()\n\ntask_pt_regs() can return NULL on powerpc for kernel threads. This is\nthen used in __bpf_get_stack() to check for user mode, resulting in a\nkernel oops. Guard against this by checking return value of\ntask_pt_regs() before trying to obtain the call chain.",
"id": "GHSA-qx5f-76wj-2xm5",
"modified": "2025-01-07T00:31:39Z",
"published": "2024-06-20T12:31:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48770"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0bcd484587b3b3092e448d27dc369e347e1810c3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b82ef4985a6d05e80f604624332430351df7b79a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b992f01e66150fc5e90be4a96f5eb8e634c8249e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ff6bdc205fd0a83bd365405d4e31fb5905826996"
}
],
"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.