CVE-2025-40342: Linux

High severity, CVSS 8.8. EPSS: 0.4% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: nvme-fc: use lock accessing port_state and rport state nvme_fc_unregister_remote removes the remote port on a lport object at any point in time when there is no active association. This races with with the reconnect logic, because nvme_fc_create_association is not taking a lock to check the port_state and atomically increase the active count on the rport.

Affected products

• Linux Linux: from 4.10, before 5.10.247 (fixed in 5.10.247); from 5.11, before 5.15.197 (fixed in 5.15.197); from 5.16, before 6.1.159 (fixed in 6.1.159); from 6.2, before 6.6.117 (fixed in 6.6.117); from 6.7, before 6.12.58 (fixed in 6.12.58); from 6.13, before 6.17.8 (fixed in 6.17.8)

Published 2025-12-09. Last modified 2026-07-30.