From c71d8ebe7a4496fb7231151cb70a6baa0cb56f9a Mon Sep 17 00:00:00 2001 From: Tetsuo Handa Date: Thu, 4 Aug 2011 14:07:40 +0000 Subject: [PATCH] net: Fix security_socket_sendmsg() bypass problem. The sendmmsg() introduced by commit 228e548e "net: Add sendmmsg socket system call" is capable of sending to multiple different destination addresses. SMACK is using destination's address for checking sendmsg() permission. However, security_socket_sendmsg() is called for only once even if multiple different destination addresses are passed to sendmmsg(). Therefore, we need to call security_socket_sendmsg() for each destination address rather than only the first destination address. Since calling security_socket_sendmsg() every time when only single destination address was passed to sendmmsg() is a waste of time, omit calling security_socket_sendmsg() unless destination address of previous datagram and that of current datagram differs. Signed-off-by: Tetsuo Handa Acked-by: Anton Blanchard Cc: stable [3.0+] Signed-off-by: David S. Miller --- Reading git-format-patch failed