On Wed, May 09, 2012 at 06:23:30PM +0200, Sasha Levin wrote: > On Wed, May 9, 2012 at 6:12 PM, Al Viro <viro@xxxxxxxxxxxxxxxxxx> wrote: > > On Wed, May 09, 2012 at 05:25:14PM +0200, Sasha Levin wrote: > >> Hi all, > >> > >> I've started seeing the following warning while fuzzing inside a KVM guest with the latest -next: > > ? ? ? ?It's not a realistic attack, fortunately, since you need root > > to get past open_exec() on any of those... ?Wait. ?How _did_ you get > > past open_exec(), anyway? ?MAY_EXEC is not supposed to be granted on > > anything that has no exec bits at all and AFAICS none of those files > > have them. > > You could chmod +x and run them, no? Can't. proc_setattr() will give you -EPERM and refuse to do anything if you call it with ATTR_MODE in ->ia_valid. -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
