[package] uhttpd: do not dispatch pipe error events, fixes use after free for cgi and lua scripts

git-svn-id: svn://svn.openwrt.org/openwrt/trunk/package/uhttpd/src@32644 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 6 insertions, 2 deletions

diff --git a/uhttpd.c b/uhttpd.c
index 73f6e03..3237fba 100644
--- a/uhttpd.c
+++ b/uhttpd.c
@@ -573,9 +573,13 @@ static void uh_pipe_cb(struct uloop_fd *u, unsigned int events)
 {
 	struct client *cl = container_of(u, struct client, pipe);
 
-	D("SRV: Client(%d) pipe(%d) readable\n", cl->fd.fd, cl->pipe.fd);
+	if (!u->error)
+	{
+		D("SRV: Client(%d) pipe(%d) readable\n",
+		  cl->fd.fd, cl->pipe.fd);
 
-	uh_client_cb(&cl->fd, ULOOP_WRITE);
+		uh_client_cb(&cl->fd, ULOOP_WRITE);
+	}
 }
 
 static void uh_child_cb(struct uloop_process *p, int rv)