CVE-2018-9515

This exploit demonstrates a race condition in the sdcardfs filesystem implementation in the Android kernel, leading to a denial-of-service (DoS) condition. The vulnerability arises from improper handling of the task lock when modifying the `current->fs` structure, causing kernel crashes.

This PoC exploits a use-after-free (UAF) vulnerability in the Linux kernel's filesystem handling by manipulating directory operations and symlinks. The code creates a race condition between threads to trigger the UAF, demonstrating the vulnerability in Android systems.