In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Fix missing i_op in ntfs_read_mft There is null pointer dereference because i_op == NULL. The bug happens because we don't initialize i_op for records in $Extend.
https://git.kernel.org/stable/c/c293e8abc09e6e1faa50d967bd8862b1cbd575e5
https://git.kernel.org/stable/c/8089a1bc27b41e6800590a92d17c119e9aa8ff53
https://git.kernel.org/stable/c/37a530bfe56ca9a0d3129598803f2794c7428aae