[PATCH 3.10 239/319] mISDN: Fixing missing validation in base_sock_bind()

Willy Tarreau
2017-02-05T20:05:35Z

From: Emrah Demir <ed@abdsec.com>

commit b821646826e22f0491708768fccce58eef3f5704 upstream.

Add validation code into mISDN/socket.c

Signed-off-by: Emrah Demir <ed@abdsec.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Willy Tarreau <w@1wt.eu>
---
drivers/isdn/mISDN/socket.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/isdn/mISDN/socket.c b/drivers/isdn/mISDN/socket.c
index 5cefb47..00bd80a 100644
--- a/drivers/isdn/mISDN/socket.c
+++ b/drivers/isdn/mISDN/socket.c
@@ -717,6 +717,9 @@ base_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
if (!maddr || maddr->family != AF_ISDN)
return -EINVAL;

+ if (addr_len < sizeof(struct sockaddr_mISDN))
+ return -EINVAL;
+
lock_sock(sk);

if (_pms(sk)->dev) {
--
2.8.0.rc2.1.gbe9624a