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Vulnerability record · CVE-2026-23372 · published 25 March 2026

CVE-2026-23372: Linux kernel vulnerability

Linux · Linux Kernel

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.

7.8 CVSS 3.1 High EPSS 0.13% · top 97.7%
7.8CVSS 3.1 base score
0.13%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/3ae592ed91bb4b6b51df256b51045c13d2656049 Patch
https://git.kernel.org/stable/c/722a28b635ec281bb08a23885223526d8e7d6526 Patch
https://git.kernel.org/stable/c/78141b8832e16d80d09cbefb4258612db0777a24 Patch
https://git.kernel.org/stable/c/9b2d23cd09e1cb56bdf0e4d5614703094159f16c Patch
https://git.kernel.org/stable/c/cdeed45ce8c92defd057f7d67ee9a69374d8fa16 Patch
https://git.kernel.org/stable/c/d793458c45df2aed498d7f74145eab7ee22d25aa Patch
https://git.kernel.org/stable/c/da4515fc8263c5933ed605e396af91079806dc45 Patch
https://git.kernel.org/stable/c/edc988613def90c5b558e025b1b423f48007be06 Patch

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Source: NIST National Vulnerability Database (record CVE-2026-23372), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.