1 files changed, 37 insertions, 0 deletions
diff --git a/oss-fuzz/cbor_load_fuzzer.cc b/oss-fuzz/cbor_load_fuzzer.cc
new file mode 100644
index 000000000000..b32a082bb8a9
--- /dev/null
+++ b/oss-fuzz/cbor_load_fuzzer.cc
@@ -0,0 +1,37 @@
+#include <cstdint>
+#include <cstdio>
+
+#include "cbor.h"
+
+void *limited_malloc(size_t size) {
+    if (size > 1 << 24) {
+        return nullptr;
+    }
+    return malloc(size);
+}
+
+struct State {
+    FILE* fout;
+
+    State() : fout(fopen("/dev/null", "r")) {
+        cbor_set_allocs(limited_malloc, realloc, free);
+    }
+};
+
+static State kState;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+    cbor_load_result result;
+    cbor_item_t *item = cbor_load(Data, Size, &result);
+    if (result.error.code == CBOR_ERR_NONE) {
+        cbor_describe(item, kState.fout);
+        unsigned char *buffer;
+        size_t buffer_size;
+        cbor_serialize_alloc(item, &buffer, &buffer_size);
+        free(buffer);
+        cbor_item_t *copied = cbor_copy(item);
+        cbor_decref(&copied);
+        cbor_decref(&item);
+    }
+    return 0;
+}