1 files changed, 4 insertions, 0 deletions
diff --git a/slirp/udp.c b/slirp/udp.c
index 93d7224792..227d779022 100644
--- a/slirp/udp.c
+++ b/slirp/udp.c
@@ -335,6 +335,10 @@ udp_listen(Slirp *slirp, uint32_t haddr, u_int hport, uint32_t laddr,
 	    return NULL;
 	}
 	so->s = qemu_socket(AF_INET,SOCK_DGRAM,0);
+        if (so->s < 0) {
+            sofree(so);
+            return NULL;
+        }
 	so->so_expire = curtime + SO_EXPIRE;
 	insque(so, &slirp->udb);