Linux Kernel Asynchronous Request Handling Vulnerability in SMB Server

CVE-2026-98439

What is CVE-2026-98439?

A vulnerability exists in the Linux kernel related to the SMB server where asynchronous requests may remain pending when a connection is closed. This condition can impede the proper termination of connections, potentially leading to unexpected behavior or denial of service. To mitigate this issue, proactive cancellation of active asynchronous requests has been implemented prior to closing the connection, ensuring that resources are freed appropriately and the connection closes smoothly.

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