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CVE-2013-1819

Description

The _xfs_buf_find function in fs/xfs/xfs_buf.c in the Linux kernel before 3.7.6 does not validate block numbers, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by leveraging the ability to mount an XFS filesystem containing a metadata inode with an invalid extent map.

POC

Reference

- http://www.ubuntu.com/usn/USN-1973-1

- http://www.ubuntu.com/usn/USN-1975-1

Github

No PoCs found on GitHub currently.