diff options
| -rw-r--r-- | include/linux/tipc.h | 2 | ||||
| -rw-r--r-- | net/tipc/socket.c | 13 |
2 files changed, 14 insertions, 1 deletions
diff --git a/include/linux/tipc.h b/include/linux/tipc.h index a5b994a..f2d9009 100644 --- a/include/linux/tipc.h +++ b/include/linux/tipc.h @@ -101,7 +101,7 @@ static inline unsigned int tipc_node(__u32 addr) * Limiting values for messages */ -#define TIPC_MAX_USER_MSG_SIZE 66000 +#define TIPC_MAX_USER_MSG_SIZE 66000U /* * Message importance levels diff --git a/net/tipc/socket.c b/net/tipc/socket.c index 29d94d5..e1c7917 100644 --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -535,6 +535,9 @@ static int send_msg(struct kiocb *iocb, struct socket *sock, if (unlikely((m->msg_namelen < sizeof(*dest)) || (dest->family != AF_TIPC))) return -EINVAL; + if ((total_len > TIPC_MAX_USER_MSG_SIZE) || + (m->msg_iovlen > (unsigned)INT_MAX)) + return -EMSGSIZE; if (iocb) lock_sock(sk); @@ -640,6 +643,10 @@ static int send_packet(struct kiocb *iocb, struct socket *sock, if (unlikely(dest)) return send_msg(iocb, sock, m, total_len); + if ((total_len > TIPC_MAX_USER_MSG_SIZE) || + (m->msg_iovlen > (unsigned)INT_MAX)) + return -EMSGSIZE; + if (iocb) lock_sock(sk); @@ -723,6 +730,12 @@ static int send_stream(struct kiocb *iocb, struct socket *sock, goto exit; } + if ((total_len > (unsigned)INT_MAX) || + (m->msg_iovlen > (unsigned)INT_MAX)) { + res = -EMSGSIZE; + goto exit; + } + /* * Send each iovec entry using one or more messages * |