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CVE-2018-14609

Description

An issue was discovered in the Linux kernel through 4.17.10. There is an invalid pointer dereference in __del_reloc_root() in fs/btrfs/relocation.c when mounting a crafted btrfs image, related to removing reloc rb_trees when reloc control has not been initialized.

POC

Reference

- https://usn.ubuntu.com/3821-1/

- https://usn.ubuntu.com/3821-2/

- https://usn.ubuntu.com/4118-1/

Github

- https://github.com/ARPSyndicate/cvemon