Linux Kernel Vulnerability in DLM Component

CVE-2024-56749

What is CVE-2024-56749?

A vulnerability in the Linux kernel's Distributed Lock Manager (DLM) component has been identified, which can occur during the member recovery process. Specifically, if the dlm_recover_members() function encounters an error, it fails to release references held by the root_list structure that is critical for maintaining resource state blocks (rsbs) during recovery. This can lead to resource retention issues, particularly in scenarios where ping_members() may be interrupted, causing an erroneous state that could affect overall kernel stability and performance. Ensuring timely updates and patches for affected kernel versions is essential to mitigate these concerns.

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References