On Mon, 2014-06-02 at 19:32 -0400, Theodore Ts'o wrote:
> Linux's time(2) can return (time_t) -1 and set errno to EFAULT, per
> the Posix specification:
>
> SYSCALL_DEFINE1(time, time_t __user *, tloc)
> {
> time_t i = get_seconds();
>
> if (tloc) {
> if (put_user(i,tloc))
> return -EFAULT;
> }
> force_successful_syscall_return();
> return i;
> }
get_seconds() returns an unsigned long so there's potential for overflow
here.
--
Roger
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