Socket Binding Vulnerability in Linux Kernel

CVE-2025-21756

Summary

A vulnerability in the Linux kernel allows for improper socket binding, leading to potential use-after-free scenarios. Specifically, the issue arises in the vsock module where socket bindings may not be preserved correctly during transport reassignment. This flaw can cause unintended memory access, potentially leading to crashes or arbitrary code execution. Proper handling and checking of socket states before removal from bound lists are essential to mitigate the risk associated with this vulnerability.

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