On Sun, 2009-10-25 at 10:36 +0100, Pavel Machek wrote: > Well, it is unexpected and mild security hole. > > Part of the problem is that even if you have read-only > filedescriptor, you can upgrade it to read-write, even if path is > inaccessible to you. > > So if someone passes you read-only filedescriptor, you can still write > to it. > Pavel If someone passes you a file descriptor, can't you in any case play games with, openat(fd,"",O_RDWR), in order to achieve the same thing? I must admit I haven't tried it yet, but at a first glance I can't see anything that prevents me from doing this... Cheers Trond -- 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
