kernel: Integer overflow in futex.c:futux_requeue can lead to denial of service or unspecified impact

The futexrequeue function in kernel/futex.c in the Linux kernel, before 4.14.15, might allow attackers to cause a denial of service integer overflow or possibly have unspecified other impacts by triggering a negative wake or requeue value. Due to the nature of the flaw, privilege escalation canno...