From: Emrah Demir <ed@xxxxxxxxxx>
3.12-stable review patch. If anyone has any objections, please let me know.
===============
commit b821646826e22f0491708768fccce58eef3f5704 upstream.
Add validation code into mISDN/socket.c
Signed-off-by: Emrah Demir <ed@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: Oliver Neukum <oliver@xxxxxxxxxx>
Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---
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 5cefb479c707..00bd80a63895 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) {
--
2.10.0
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