The ext4 implementation in the Linux kernel before 2.6.34 does not properly track the initialization of certain data structures, which allows physically proximate attackers to cause a denial of service (NULL pointer dereference and panic) via a crafted USB device, related to the ext4_fill_super function.
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- https://github.com/Live-Hack-CVE/CVE-2015-8324