The udf_read_inode function in fs/udf/inode.c in the Linux kernel before 3.19.1 does not validate certain length values, which allows local users to cause a denial of service (incorrect data representation or integer overflow, and OOPS) via a crafted UDF filesystem. http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-4167
