Bluetooth Vulnerability in Linux Kernel Affecting Device Connection Handling

CVE-2025-39983

What is CVE-2025-39983?

A use-after-free vulnerability has been identified in the Bluetooth subsystem of the Linux kernel, specifically within the processing of HCI events related to connection handling. This flaw could lead to potential memory access violations, allowing unauthorized users to exploit the weakness. The issue arises from improper locking mechanisms, which can leave memory handles dangling if connections are manipulated without appropriate safeguards. This vulnerability underscores the importance of diligent memory management practices, particularly in scenarios involving device connectivity and interaction.

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