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.
| Score | Percentile |
|---|---|
| 0.01% | 2.42% |
| Base score | Version | Severity | Vector |
|---|---|---|---|
| 7.8 | 3.1 | — |
|
| Type | Value |
|---|---|
| GHSA | GHSA-v5pm-g3x4-2pmj ↗ |
| CVE | CVE-2026-23372 ↗ |