CVE-2025-21847 ASoC: SOF: stream-ipc: Check for cstream nullity in sof_ipc_msg_data()

In the Linux kernel, the following vulnerability has been resolved: ASoC: SOF: stream-ipc: Check for cstream nullity in sofipcmsgdata The nullity of sps-cstream should be checked similarly as it is done in sofsetstreamdataoffset function. Assuming that it is not NULL if sps-stream is NULL is...