1 files changed, 43 insertions, 0 deletions
diff --git a/src/libsystemd-network/fuzz-lldp-rx.c b/src/libsystemd-network/fuzz-lldp-rx.c
new file mode 100644
index 0000000000..6c4d3e2e56
--- /dev/null
+++ b/src/libsystemd-network/fuzz-lldp-rx.c
@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <errno.h>
+#include <unistd.h>
+
+#include "sd-event.h"
+#include "sd-lldp-rx.h"
+
+#include "fd-util.h"
+#include "fuzz.h"
+#include "lldp-network.h"
+
+static int test_fd[2] = { -1, -1 };
+
+int lldp_network_bind_raw_socket(int ifindex) {
+        if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK, 0, test_fd) < 0)
+                return -errno;
+
+        return test_fd[0];
+}
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+        _cleanup_(sd_event_unrefp) sd_event *e = NULL;
+        _cleanup_(sd_lldp_unrefp) sd_lldp *lldp = NULL;
+
+        if (size > 2048)
+                return 0;
+
+        assert_se(sd_event_new(&e) == 0);
+        assert_se(sd_lldp_new(&lldp) >= 0);
+        assert_se(sd_lldp_set_ifindex(lldp, 42) >= 0);
+        assert_se(sd_lldp_attach_event(lldp, e, 0) >= 0);
+        assert_se(sd_lldp_start(lldp) >= 0);
+
+        assert_se(write(test_fd[1], data, size) == (ssize_t) size);
+        assert_se(sd_event_run(e, 0) >= 0);
+
+        assert_se(sd_lldp_stop(lldp) >= 0);
+        assert_se(sd_lldp_detach_event(lldp) >= 0);
+        test_fd[1] = safe_close(test_fd[1]);
+
+        return 0;
+}