CVE-2022-49742

Summary

CVE-2022-49742 is a vulnerability affecting the Linux kernel's f2fs file system. The issue lies in the f2fs_fill_super() function, where the initialization of error-handling locks occurs before they are initialized. This sequence leads to lockdep warnings reported by syzbot at f2fs_handle_error(). To mitigate this issue, it is recommended to move the initialization of these locks and associated structures to immediately after memory allocation in the f2fs_fill_super() function. This change ensures secure locking during error handling and avoids potential deadlock scenarios.

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