irda: Fix missing msg_namelen update in irda_recvmsg_dgram()
The current code does not fill the msg_name member in case it is set. It also does not set the msg_namelen member to 0 and therefore makes net/socket.c leak the local, uninitialized sockaddr_storage variable to userland -- 128 bytes of kernel stack memory. Fix that by simply setting msg_namelen to 0 as obviously nobody cared about irda_recvmsg_dgram() not filling the msg_name in case it was set. Cc: Samuel Ortiz <samuel@sortiz.org> Signed-off-by: Mathias Krause <minipli@googlemail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Родитель
2d6fbfe733
Коммит
5ae94c0d2f
|
@ -1386,6 +1386,8 @@ static int irda_recvmsg_dgram(struct kiocb *iocb, struct socket *sock,
|
|||
|
||||
IRDA_DEBUG(4, "%s()\n", __func__);
|
||||
|
||||
msg->msg_namelen = 0;
|
||||
|
||||
skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT,
|
||||
flags & MSG_DONTWAIT, &err);
|
||||
if (!skb)
|
||||
|
|
Загрузка…
Ссылка в новой задаче