CVE-2022-49288

Summary

CVE-2022-49288 is a vulnerability affecting the Linux kernel. This issue involves races among concurrent PCM buffer preallocation changes through proc files, leaving no protection against such actions. The absence of safeguards against these concurrent writes could potentially result in a Use-After-Free (UAF) scenario or other unexpected behaviors. This vulnerability has been mitigated by implementing the PCM open_mutex for the proc write operation, thereby preventing the occurrence of these races and securing the PCM stream open and subsequent operations.

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