The (1) pipe_read and (2) pipe_write implementations in fs/pipe.c in the Linux kernel before 3.16 do not properly consider the side effects of failed __copy_to_user_inatomic and __copy_from_user_inatomic calls, which allows local users to cause a denial of service (system crash) or possibly gain privileges via a crafted application, aka an "I/O vector array overrun."
Exploitability
AV:LAC:LAu:NImpact
C:CI:CA:C7.2/AV:L/AC:L/Au:N/C:C/I:C/A:C