diff options
Diffstat (limited to 'net/l2tp/l2tp_ppp.c')
| -rw-r--r-- | net/l2tp/l2tp_ppp.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c index 68d2489fc133..aea85f91f059 100644 --- a/net/l2tp/l2tp_ppp.c +++ b/net/l2tp/l2tp_ppp.c @@ -1065,6 +1065,9 @@ static int pppol2tp_ioctl(struct socket *sock, unsigned int cmd, if (!session) return -ENOTCONN; + if (WARN_ON(session->magic != L2TP_SESSION_MAGIC)) + return -EBADF; + /* Not defined for tunnels */ if (!session->session_id && !session->peer_session_id) return -ENOSYS; @@ -1079,6 +1082,9 @@ static int pppol2tp_ioctl(struct socket *sock, unsigned int cmd, if (!session) return -ENOTCONN; + if (WARN_ON(session->magic != L2TP_SESSION_MAGIC)) + return -EBADF; + /* Not defined for tunnels */ if (!session->session_id && !session->peer_session_id) return -ENOSYS; @@ -1092,6 +1098,9 @@ static int pppol2tp_ioctl(struct socket *sock, unsigned int cmd, if (!session) return -ENOTCONN; + if (WARN_ON(session->magic != L2TP_SESSION_MAGIC)) + return -EBADF; + /* Session 0 represents the parent tunnel */ if (!session->session_id && !session->peer_session_id) { u32 session_id; |