CVE-2024-53218

Summary

CVE-2024-53218 is a recently identified vulnerability in the Linux kernel's f2fs filesystem. The issue lies in the concurrent execution of the f2fs_stop_gc_thread function, where a race condition occurs between different f2fs shutdown paths. This race condition allows for a Use After Free (UAF) condition, leading to a general protection fault. An attempt was made to address this issue with commit c7f114d864ac, but it failed to prevent all race conditions. A more effective solution is to use a write lock in f2fs_do_shutdown() to prevent concurrent access and race conditions.

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