Linux Kernel Vulnerability in RDMA/cma - Multicast Join Restrictions

CVE-2023-53525

What is CVE-2023-53525?

A vulnerability in the Linux kernel's RDMA/cma component allows the user Datagram (UD) queue pair type to join multicast groups without properly initializing key parameters. An uninitialized value access can lead to undefined behavior, potentially compromising the security and stability of the system. This vulnerability highlights the necessity for stricter controls on multicast join requests to prevent exploitation and ensure the integrity of data communication within the kernel's networking stack.

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