CVE-2026-23372

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.