Initialize the sockaddr_can structure to prevent a data leak to user space.
Suggested-by: Cong Wang <xiyou.wangcong@xxxxxxxxx>
Reported-by: syzbot+057884e2f453e8afebc8@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: e057dd3fc20f ("can: add ISO 15765-2:2016 transport protocol")
Signed-off-by: Oliver Hartkopp <socketcan@xxxxxxxxxxxx>
---
net/can/isotp.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/can/isotp.c b/net/can/isotp.c
index 7839c3b9e5be..3ef7f78e553b 100644
--- a/net/can/isotp.c
+++ b/net/can/isotp.c
@@ -1153,10 +1153,11 @@ static int isotp_getname(struct socket *sock, struct sockaddr *uaddr, int peer)
struct isotp_sock *so = isotp_sk(sk);
if (peer)
return -EOPNOTSUPP;
+ memset(addr, 0, sizeof(*addr));
addr->can_family = AF_CAN;
addr->can_ifindex = so->ifindex;
addr->can_addr.tp.rx_id = so->rxid;
addr->can_addr.tp.tx_id = so->txid;
--
2.29.2
