An issue was discovered in the Linux kernel through 4.17.10. There is a buffer overflow in truncate_inline_inode() in fs/f2fs/inline.c when umounting an f2fs image, because a length value may be negative.
- https://bugzilla.kernel.org/show_bug.cgi?id=200421
- https://usn.ubuntu.com/4118-1/
No PoCs found on GitHub currently.