GHSA-V5PM-G3X4-2PMJ
Vulnerability from github – Published: 2026-03-25 12:30 – Updated: 2026-04-18 09:30In the Linux kernel, the following vulnerability has been resolved:
nfc: rawsock: cancel tx_work before socket teardown
In rawsock_release(), cancel any pending tx_work and purge the write queue before orphaning the socket. rawsock_tx_work runs on the system workqueue and calls nfc_data_exchange which dereferences the NCI device. Without synchronization, tx_work can race with socket and device teardown when a process is killed (e.g. by SIGKILL), leading to use-after-free or leaked references.
Set SEND_SHUTDOWN first so that if tx_work is already running it will see the flag and skip transmitting, then use cancel_work_sync to wait for any in-progress execution to finish, and finally purge any remaining queued skbs.
{
"affected": [],
"aliases": [
"CVE-2026-23372"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-25T11:16:36Z",
"severity": "HIGH"
},
"details": "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.",
"id": "GHSA-v5pm-g3x4-2pmj",
"modified": "2026-04-18T09:30:18Z",
"published": "2026-03-25T12:30:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23372"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3ae592ed91bb4b6b51df256b51045c13d2656049"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/722a28b635ec281bb08a23885223526d8e7d6526"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/78141b8832e16d80d09cbefb4258612db0777a24"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9b2d23cd09e1cb56bdf0e4d5614703094159f16c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/cdeed45ce8c92defd057f7d67ee9a69374d8fa16"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d793458c45df2aed498d7f74145eab7ee22d25aa"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/da4515fc8263c5933ed605e396af91079806dc45"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/edc988613def90c5b558e025b1b423f48007be06"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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|---|
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