CVE-2026-23372 (GCVE-0-2026-23372)

Vulnerability from cvelistv5 – Published: 2026-03-25 10:27 – Updated: 2026-03-25 10:27
VLAI?
Title
nfc: rawsock: cancel tx_work before socket teardown
Summary
In 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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 23b7869c0fd08d73c9f83a2db88a13312d6198bb , < 3ae592ed91bb4b6b51df256b51045c13d2656049 (git)
Affected: 23b7869c0fd08d73c9f83a2db88a13312d6198bb , < 722a28b635ec281bb08a23885223526d8e7d6526 (git)
Affected: 23b7869c0fd08d73c9f83a2db88a13312d6198bb , < 78141b8832e16d80d09cbefb4258612db0777a24 (git)
Affected: 23b7869c0fd08d73c9f83a2db88a13312d6198bb , < edc988613def90c5b558e025b1b423f48007be06 (git)
Affected: 23b7869c0fd08d73c9f83a2db88a13312d6198bb , < da4515fc8263c5933ed605e396af91079806dc45 (git)
Affected: 23b7869c0fd08d73c9f83a2db88a13312d6198bb , < d793458c45df2aed498d7f74145eab7ee22d25aa (git)
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    Linux Linux Affected: 3.1
Unaffected: 0 , < 3.1 (semver)
Unaffected: 6.1.167 , ≤ 6.1.* (semver)
Unaffected: 6.6.130 , ≤ 6.6.* (semver)
Unaffected: 6.12.77 , ≤ 6.12.* (semver)
Unaffected: 6.18.17 , ≤ 6.18.* (semver)
Unaffected: 6.19.7 , ≤ 6.19.* (semver)
Unaffected: 7.0-rc3 , ≤ * (original_commit_for_fix)
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          "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."
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        "dateUpdated": "2026-03-25T10:27:53.308Z",
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    "dateReserved": "2026-01-13T15:37:46.003Z",
    "dateUpdated": "2026-03-25T10:27:53.308Z",
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  }
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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