The wanxl_ioctl function in drivers/net/wan/wanxl.c in the Linux kernel before 3.11.7 does not properly initialize a certain data structure, which allows local users to obtain sensitive information from kernel memory via an ioctl call.
Exploitability
AV:LAC:LAu:NImpact
C:PI:NA:N2.1/AV:L/AC:L/Au:N/C:P/I:N/A:N