Lagom/Fuzzers: Add a fuzzer for our TIFF decoder

Meta/Lagom/Fuzzers/FuzzTIFFLoader.cpp

@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2023, the SerenityOS developers.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibGfx/ImageFormats/TIFFLoader.h>
+#include <stdio.h>
+
+extern "C" int LLVMFuzzerTestOneInput(uint8_t const* data, size_t size)
+{
+    auto decoder_or_error = Gfx::TIFFImageDecoderPlugin::create({ data, size });
+    if (decoder_or_error.is_error())
+        return 0;
+    auto decoder = decoder_or_error.release_value();
+    (void)decoder->frame(0);
+    return 0;
+}

Meta/Lagom/Fuzzers/fuzzers.cmake

@@ -53,6 +53,7 @@ set(FUZZER_TARGETS
     SQLParser
     Tar
     TGALoader
+    TIFFLoader
     TTF
     TinyVGLoader
     URL
@@ -126,6 +127,7 @@ set(FUZZER_DEPENDENCIES_ShellPosix LibShell)
 set(FUZZER_DEPENDENCIES_SQLParser LibSQL)
 set(FUZZER_DEPENDENCIES_Tar LibArchive)
 set(FUZZER_DEPENDENCIES_TGALoader LibGfx)
+set(FUZZER_DEPENDENCIES_TIFFLoader LibGfx)
 set(FUZZER_DEPENDENCIES_TTF LibGfx)
 set(FUZZER_DEPENDENCIES_TinyVGLoader LibGfx)
 set(FUZZER_DEPENDENCIES_UTF16BEDecoder LibTextCodec)

Userland/Utilities/test-fuzz.cpp

@@ -67,6 +67,7 @@
     T(SQLParser)             \
     T(Tar)                   \
     T(TGALoader)             \
+    T(TIFFLoader)            \
     T(TTF)                   \
     T(TinyVGLoader)          \
     T(URL)                   \