Memory Leak Vulnerability in Linux Kernel's FastRPC Component

CVE-2025-68252

What is CVE-2025-68252?

The Linux Kernel's FastRPC component has a vulnerability where a reference to the dma_buf is obtained in the fastrpc_map_lookup function but is not released upon function exit. This oversight can result in a memory leak, affecting system performance over time. To mitigate this issue, the fix involves adding a dma_buf_put call before returning from the function, ensuring that temporary references are released correctly, even if a matching map is not found.

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