can: test size of struct sockaddr in sendmsg

[deliverable/linux.git] / net / can / raw.c

diff --git a/net/can/raw.c b/net/can/raw.c
index e88f610fdb7bb11e69cc1f5a0bf10846d5c7165c..883e9d74fddf6439b483f822b327371b78bb9670 100644 (file)
--- a/net/can/raw.c
+++ b/net/can/raw.c
@@ -649,6 +649,9 @@ static int raw_sendmsg(struct kiocb *iocb, struct socket *sock,
                struct sockaddr_can *addr =
                        (struct sockaddr_can *)msg->msg_name;
 
+               if (msg->msg_namelen < sizeof(*addr))
+                       return -EINVAL;
+
                if (addr->can_family != AF_CAN)
                        return -EINVAL;