1 files changed, 45 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 0000000..844957c
--- /dev/null
+++ b/src/libsystemd-network/fuzz-lldp-rx.c
@@ -0,0 +1,45 @@
+/* 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] = EBADF_PAIR;
+
+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_rx_unrefp) sd_lldp_rx *lldp_rx = NULL;
+
+        if (outside_size_range(size, 0, 2048))
+                return 0;
+
+        fuzz_setup_logging();
+
+        assert_se(sd_event_new(&e) == 0);
+        assert_se(sd_lldp_rx_new(&lldp_rx) >= 0);
+        assert_se(sd_lldp_rx_set_ifindex(lldp_rx, 42) >= 0);
+        assert_se(sd_lldp_rx_attach_event(lldp_rx, e, 0) >= 0);
+        assert_se(sd_lldp_rx_start(lldp_rx) >= 0);
+
+        assert_se(write(test_fd[1], data, size) == (ssize_t) size);
+        assert_se(sd_event_run(e, 0) >= 0);
+
+        assert_se(sd_lldp_rx_stop(lldp_rx) >= 0);
+        assert_se(sd_lldp_rx_detach_event(lldp_rx) >= 0);
+        test_fd[1] = safe_close(test_fd[1]);
+
+        return 0;
+}