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vuln-cve/data/2026/23xxx/CVE-2026-23372.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-23372",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-01-13T15:37:46.003Z",
"datePublished": "2026-03-25T10:27:53.308Z",
"dateUpdated": "2026-10-15T01:14:30.909Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-08-05T12:21:18.928Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: rawsock: cancel tx_work before socket teardown\n\nIn rawsock_release(), cancel any pending tx_work and purge the write\nqueue before orphaning the socket. rawsock_tx_work runs on the system\nworkqueue and calls nfc_data_exchange which dereferences the NCI\ndevice. Without synchronization, tx_work can race with socket and\ndevice teardown when a process is killed (e.g. by SIGKILL), leading\nto use-after-free or leaked references.\n\nSet SEND_SHUTDOWN first so that if tx_work is already running it will\nsee the flag and skip transmitting, then use cancel_work_sync to wait\nfor any in-progress execution to finish, and finally purge any\nremaining queued skbs."
}
],
"metrics": [
{
"cvssV3_1": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 7.8,
"baseSeverity": "HIGH"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The attacker needs local access to create an AF_NFC socket and perform socket operations (connect, sendmsg, close). NFC is the affected subsystem but the exploit entry is through local syscalls.\nAC:L - The attacker controls both sides of the race — they schedule tx_work via sendmsg() then immediately close the socket. The race is reliably triggerable by the attacker.\nPR:L - Creating a SOCK_SEQPACKET NFC socket requires no capabilities (only SOCK_RAW requires CAP_NET_RAW). Any unprivileged local user in the init network namespace can create and use these sockets.\nUI:N - No user interaction needed. The attacker opens, connects, sends, and closes the NFC socket entirely on their own.\nS:U - Standard kernel use-after-free within the same security authority (kernel privilege escalation). No cross-boundary escape such as VM or sandbox escape.\nC:H - UAF on a struct containing function pointers (nfc_dev with dev->ops) allows an attacker to read arbitrary kernel memory via heap spray techniques placing controlled data in the freed allocation.\nI:H - The UAF dereferences dev->ops->im_transceive, a function pointer on freed memory. Via heap spraying, the attacker can hijack this function pointer to achieve arbitrary code execution in kernel context.\nA:H - Use-after-free on kernel objects causes kernel crash/oops when the freed memory is dereferenced, leading to denial of service."
}
]
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"net/nfc/rawsock.c"
],
"versions": [
{
"version": "23b7869c0fd08d73c9f83a2db88a13312d6198bb",
"lessThan": "9b2d23cd09e1cb56bdf0e4d5614703094159f16c",
"status": "affected",
"versionType": "git"
},
{
"version": "23b7869c0fd08d73c9f83a2db88a13312d6198bb",
"lessThan": "cdeed45ce8c92defd057f7d67ee9a69374d8fa16",
"status": "affected",
"versionType": "git"
},
{
"version": "23b7869c0fd08d73c9f83a2db88a13312d6198bb",
"lessThan": "3ae592ed91bb4b6b51df256b51045c13d2656049",
"status": "affected",
"versionType": "git"
},
{
"version": "23b7869c0fd08d73c9f83a2db88a13312d6198bb",
"lessThan": "722a28b635ec281bb08a23885223526d8e7d6526",
"status": "affected",
"versionType": "git"
},
{
"version": "23b7869c0fd08d73c9f83a2db88a13312d6198bb",
"lessThan": "78141b8832e16d80d09cbefb4258612db0777a24",
"status": "affected",
"versionType": "git"
},
{
"version": "23b7869c0fd08d73c9f83a2db88a13312d6198bb",
"lessThan": "edc988613def90c5b558e025b1b423f48007be06",
"status": "affected",
"versionType": "git"
},
{
"version": "23b7869c0fd08d73c9f83a2db88a13312d6198bb",
"lessThan": "da4515fc8263c5933ed605e396af91079806dc45",
"status": "affected",
"versionType": "git"
},
{
"version": "23b7869c0fd08d73c9f83a2db88a13312d6198bb",
"lessThan": "d793458c45df2aed498d7f74145eab7ee22d25aa",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"net/nfc/rawsock.c"
],
"versions": [
{
"version": "3.1",
"status": "affected"
},
{
"version": "0",
"lessThan": "3.1",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.10.253",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.203",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.167",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.130",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.77",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18.17",
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.19.7",
"lessThanOrEqual": "6.19.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.0",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.1",
"versionEndExcluding": "5.10.253"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.1",
"versionEndExcluding": "5.15.203"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.1",
"versionEndExcluding": "6.1.167"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.1",
"versionEndExcluding": "6.6.130"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.1",
"versionEndExcluding": "6.12.77"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.1",
"versionEndExcluding": "6.18.17"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.1",
"versionEndExcluding": "6.19.7"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.1",
"versionEndExcluding": "7.0"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/9b2d23cd09e1cb56bdf0e4d5614703094159f16c"
},
{
"url": "https://git.kernel.org/stable/c/cdeed45ce8c92defd057f7d67ee9a69374d8fa16"
},
{
"url": "https://git.kernel.org/stable/c/3ae592ed91bb4b6b51df256b51045c13d2656049"
},
{
"url": "https://git.kernel.org/stable/c/722a28b635ec281bb08a23885223526d8e7d6526"
},
{
"url": "https://git.kernel.org/stable/c/78141b8832e16d80d09cbefb4258612db0777a24"
},
{
"url": "https://git.kernel.org/stable/c/edc988613def90c5b558e025b1b423f48007be06"
},
{
"url": "https://git.kernel.org/stable/c/da4515fc8263c5933ed605e396af91079806dc45"
},
{
"url": "https://git.kernel.org/stable/c/d793458c45df2aed498d7f74145eab7ee22d25aa"
}
],
"title": "nfc: rawsock: cancel tx_work before socket teardown",
"x_generator": {
"engine": "bippy-1.2.0"
}
},
"adp": [
{
"x_adpType": "supplier",
"providerMetadata": {
"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"shortName": "siemens-SADP",
"dateUpdated": "2026-10-15T01:14:30.909Z"
},
"affected": [
{
"vendor": "Siemens",
"product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "*",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
}
],
"references": [
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
}
]
}
]
}
}
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