commit b821646826e22f0491708768fccce58eef3f5704
author Emrah Demir <ed@abdsec.com> Fri Apr 08 22:16:11 2016 +0300
committer David S. Miller <davem@davemloft.net> Wed Apr 13 23:00:50 2016 -0400
tree f4f50c4fb686ae91dbd96284281c7e1b815b08b5
parent 70af921db6f8835f4b11c65731116560adb00c14

mISDN: Fixing missing validation in base_sock_bind()

Add validation code into mISDN/socket.c

Signed-off-by: Emrah Demir <ed@abdsec.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/isdn/mISDN/socket.c

diff --git a/drivers/isdn/mISDN/socket.c b/drivers/isdn/mISDN/socket.c
index 0d29b5a..99e5f97 100644
--- a/drivers/isdn/mISDN/socket.c
+++ b/drivers/isdn/mISDN/socket.c
@@ -715,6 +715,9 @@
 	if (!maddr || maddr->family != AF_ISDN)
 		return -EINVAL;
 
+	if (addr_len < sizeof(struct sockaddr_mISDN))
+		return -EINVAL;
+
 	lock_sock(sk);
 
 	if (_pms(sk)->dev) {