Fuzzers: Add JBIG2 fuzzer

Author: https://github.com/nico
Commit: https://github.com/SerenityOS/serenity/commit/dd593d16c4
Pull-request: https://github.com/SerenityOS/serenity/pull/23503
Reviewed-by: https://github.com/LucasChollet ✅

Meta/Lagom/Fuzzers/FuzzJBIG2Loader.cpp

@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2024, the SerenityOS developers.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibGfx/ImageFormats/JBIG2Loader.h>
+#include <stddef.h>
+#include <stdint.h>
+
+extern "C" int LLVMFuzzerTestOneInput(uint8_t const* data, size_t size)
+{
+    AK::set_debug_enabled(false);
+    auto decoder_or_error = Gfx::JBIG2ImageDecoderPlugin::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

@@ -19,6 +19,7 @@ set(FUZZER_TARGETS
     ICOLoader
     ILBMLoader
     IMAPParser
+    JBIG2Loader
     JPEGLoader
     Js
     JsonParser
@@ -92,6 +93,7 @@ set(FUZZER_DEPENDENCIES_ICCProfile LibGfx)
 set(FUZZER_DEPENDENCIES_ICOLoader LibGfx)
 set(FUZZER_DEPENDENCIES_ILBMLoader LibGfx)
 set(FUZZER_DEPENDENCIES_IMAPParser LibIMAP)
+set(FUZZER_DEPENDENCIES_JBIG2Loader LibGfx)
 set(FUZZER_DEPENDENCIES_JPEGLoader LibGfx)
 set(FUZZER_DEPENDENCIES_Js LibJS)
 set(FUZZER_DEPENDENCIES_LzmaDecompression LibArchive LibCompress)

Userland/Utilities/test-fuzz.cpp

@@ -33,6 +33,7 @@
     T(ICOLoader)             \
     T(ILBMLoader)            \
     T(IMAPParser)            \
+    T(JBIG2Loader)           \
     T(JPEGLoader)            \
     T(Js)                    \
     T(JsonParser)            \