CVE-2026-31509
Estado: AnalizadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
nfc: nci: fix circular locking dependency in nci_close_device
nci_close_device() flushes rx_wq and tx_wq while holding req_lock. This causes a circular locking dependency because nci_rx_work() running on rx_wq can end up taking req_lock too:
Move the flush of rx_wq after req_lock has been released. This should safe (I think) because NCI_UP has already been cleared and the transport is closed, so the work will see it and return -ENETDOWN.
NIPA has been hitting this running the nci selftest with a debug kernel on roughly 4% of the runs.
Detalles técnicos trazas, registros y código del informe original
nci_rx_work -> nci_rx_data_packet -> nci_data_exchange_complete
-> __sk_destruct -> rawsock_destruct -> nfc_deactivate_target
-> nci_deactivate_target -> nci_request -> mutex_lock(&ndev->req_lock)CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.13%
- Percentil entre todas las CVEs puntuadas: 2
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- CWE-667
Referencias
- https://git.kernel.org/stable/c/09143c0e8f3b03517e6233aad42f45c794d8df8e
- https://git.kernel.org/stable/c/1edc12d2bbcb7a8d0f1088e6fccb9d8c01bb1289
- https://git.kernel.org/stable/c/4527025d440ce84bf56e75ce1df2e84cb8178616
- https://git.kernel.org/stable/c/5eef9ebec7f5738f12cadede3545c05b34bf5ac3
- https://git.kernel.org/stable/c/7ed00a3edc8597fe2333f524401e2889aa1b5edf
- https://git.kernel.org/stable/c/ca54e904a071aa65ef3ad46ba42d51aaac6b73b4
- https://git.kernel.org/stable/c/d89b74bf08f067b55c03d7f999ba0a0e73177eb3
- https://git.kernel.org/stable/c/eb435d150ca74b4d40f77f1a2266f3636ed64a79
JSON original (NVD)
Mostrar
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