Guard meshoptimizer against oversized untrusted meshes - #184
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Фикс вошёл в консолидированную ветку Generated by Claude Code |
Motivation
MeshOptimizer.Optimizeвызывался без ограничений размеров и допускал выделение буферов через unchecked int-умножение, что могло привести к переполнению, выходу за пределы массива и краху редактора при обработке злонамеренно больших мешей.Description
MAX_OPTIMIZE_VERTICES,MAX_OPTIMIZE_INDICESиMAX_PACKED_BYTESи ранняя проверка бюджета перед выделением буферов.TryGetPackedByteCountкоторая вычисляет требуемый байтовый размер в 64-битной арифметике и отвергает случаи, превышающие лимиты илиInt32.MaxValue.localVertCount * layout.totalStride.outVertCount) перед небезопасной распаковкой и изменено APIPackVerticesдля получения заранее вычисленного размера буфера.Testing
git diff --checkпрошёл без проблем (проверка формата изменений).24_970_741 × 172 = 4_294_967_452).package.jsonпрошла успешно..metaдля файлов/каталогов вEditor/,Plugins/,Shaders/прошла успешно.Codex Task