Buffer overflow in the exitcode_proc_write function in arch/um/kernel/exitcode.c in the Linux kernel before 3.12 allows local users to cause a denial of service or possibly have unspecified other impact by leveraging root privileges for a write operation.
Exploitability
AV:LAC:MAu:NImpact
C:NI:NA:C4.7/AV:L/AC:M/Au:N/C:N/I:N/A:C