CVE-2025-38534

Name of the Vulnerable Software and Affected Versions: Linux kernel (affected versions not specified)

Description: The netfs copy-to-cache mechanism, used by Ceph with local caching, incorrectly handles asynchronous Direct I/O (DIO) write completion notifications. Specifically, when a request is initiated to write data read to the cache, the request may hang because the application is not waiting for the notification and NETFS RREQ OFFLOAD COLLECTION is not set. This issue occurs during collection with Ceph and fscache.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.