[PATCH 3.19.y-ckt 019/160] bluetooth: Validate socket address length in sco_sock_bind().

From: Kamal Mostafa
Date: Tue Jan 19 2016 - 20:14:29 EST


3.19.8-ckt13 -stable review patch. If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: "David S. Miller" <davem@xxxxxxxxxxxxx>

[ Upstream commit 5233252fce714053f0151680933571a2da9cbfb4 ]

Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
---
net/bluetooth/sco.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index 30e5ea3..d050224 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -520,6 +520,9 @@ static int sco_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_le
if (!addr || addr->sa_family != AF_BLUETOOTH)
return -EINVAL;

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

if (sk->sk_state != BT_OPEN) {
--
1.9.1