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CVE-2018-14610

Description

An issue was discovered in the Linux kernel through 4.17.10. There is out-of-bounds access in write_extent_buffer() when mounting and operating a crafted btrfs image, because of a lack of verification that each block group has a corresponding chunk at mount time, within btrfs_read_block_groups in fs/btrfs/extent-tree.c.

POC

Reference

- https://bugzilla.kernel.org/show_bug.cgi?id=199837

- https://usn.ubuntu.com/3932-1/

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

Github

No PoCs found on GitHub currently.