fixed bug #49726: setsockopt() set TCP_NODELAY TCP_KEEPALIVE ... with a listen state TCP will crash
diff --git a/src/api/sockets.c b/src/api/sockets.c
index 4d2dd65..e493ba6 100644
--- a/src/api/sockets.c
+++ b/src/api/sockets.c
@@ -2074,6 +2074,9 @@
case IPPROTO_TCP:
/* Special case: all IPPROTO_TCP option take an int */
LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB_TYPE(sock, *optlen, int, NETCONN_TCP);
+ if (sock->conn->pcb.tcp->state == LISTEN) {
+ return EINVAL;
+ }
switch (optname) {
case TCP_NODELAY:
*(int*)optval = tcp_nagle_disabled(sock->conn->pcb.tcp);
@@ -2467,6 +2470,9 @@
case IPPROTO_TCP:
/* Special case: all IPPROTO_TCP option take an int */
LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB_TYPE(sock, optlen, int, NETCONN_TCP);
+ if (sock->conn->pcb.tcp->state == LISTEN) {
+ return EINVAL;
+ }
switch (optname) {
case TCP_NODELAY:
if (*(const int*)optval) {
