Hi On Fri, Apr 11, 2014 at 1:05 AM, Andy Lutomirski <luto@xxxxxxxxxxxxxx> wrote: > /proc/pid/fd is a really weird corner case in which the mode of an > inode that doesn't have a name matters. I suspect that almost no one > will ever want to open one of these things out of /proc/self/fd, and > those who do should be made to think about it. I'm arguing in the context of memfd, and there's no security leak if people get access to the underlying inode (at least I'm not aware of any). As I said, context information is attached to the inode, not file context, so I'm fine if people want to open multiple file contexts via /proc. If someone wants to forbid open(), I want to hear _why_. I assume the memfd object has uid==uid-of-creator and mode==(777 & ~umask) (which usually results in X00, so no access for non-owners). I cannot see how /proc is a security issue here. Thanks David -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>