CVE-2026-90167

A flaw was found in ksmbd, the in-kernel SMB server for Linux. A race condition exists during the handling of oplock (opportunistic locking) close operations. This can allow a new oplock break owner to incorrectly overwrite internal state, leading to unexpected behavior or a denial of service. This issue arises when a close operation interferes with an in-flight oplock break, causing an inconsistent state within the server.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.