CVE-2025-40342
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 versions
Linux kernel versions
4.10
and later are affected. Fixed in
5.10.247,
5.15.197,
6.1.159,
6.6.117,
6.12.58,
6.17.8,
6.18
and their respective stable series.
References
The following references provide additional information about CVE-2025-40342 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
-
PatchKernel patch commithttps://git.kernel.org/stable/c/25f4bf1f7979a7871974fd36c79d69ff1cf4b446
-
PatchKernel patch commithttps://git.kernel.org/stable/c/4253e0a4546138a2bf9cb6acf66b32fee677fc7c
-
PatchKernel patch commithttps://git.kernel.org/stable/c/891cdbb162ccdb079cd5228ae43bdeebce8597ad
Frequently asked questions
-
What is CVE-2025-40342?
CVE-2025-40342 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.10 onward and has been patched in 5.10.247, 5.15.197, 6.1.159 and others. CVE-2025-40342 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
-
Is there a patch available for CVE-2025-40342?
Yes — CVE-2025-40342 has been patched. Fixed versions include 5.10.247, 5.15.197, 6.1.159 and others. If you are running Linux kernel 4.10 or later up to the fix versions, apply the relevant patch for your kernel branch.
-
Is CVE-2025-40342 actively exploited?
No — CVE-2025-40342 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.