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 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
