diff options
| author | Steffen Hurrle <steffen@hurrle.net> | 2014-01-18 01:53:15 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-01-19 11:04:16 +0400 |
| commit | 342dfc306fb32155314dad277f3c3686b83fb9f1 (patch) | |
| tree | a0d220f9310725c72bac70945261c9282e7cf305 /net/ieee802154/dgram.c | |
| parent | ea02f9411d9faa3553ed09ce0ec9f00ceae9885e (diff) | |
| download | linux-342dfc306fb32155314dad277f3c3686b83fb9f1.tar.xz | |
net: add build-time checks for msg->msg_name size
This is a follow-up patch to f3d3342602f8bc ("net: rework recvmsg
handler msg_name and msg_namelen logic").
DECLARE_SOCKADDR validates that the structure we use for writing the
name information to is not larger than the buffer which is reserved
for msg->msg_name (which is 128 bytes). Also use DECLARE_SOCKADDR
consistently in sendmsg code paths.
Signed-off-by: Steffen Hurrle <steffen@hurrle.net>
Suggested-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ieee802154/dgram.c')
| -rw-r--r-- | net/ieee802154/dgram.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/net/ieee802154/dgram.c b/net/ieee802154/dgram.c index 1865fdf5a5a5..1846c1fe0d06 100644 --- a/net/ieee802154/dgram.c +++ b/net/ieee802154/dgram.c @@ -291,9 +291,7 @@ static int dgram_recvmsg(struct kiocb *iocb, struct sock *sk, size_t copied = 0; int err = -EOPNOTSUPP; struct sk_buff *skb; - struct sockaddr_ieee802154 *saddr; - - saddr = (struct sockaddr_ieee802154 *)msg->msg_name; + DECLARE_SOCKADDR(struct sockaddr_ieee802154 *, saddr, msg->msg_name); skb = skb_recv_datagram(sk, flags, noblock, &err); if (!skb) |