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LibGfx/PNGLoader: Don't allow multiple consecutive IHDR chunks
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@ -1237,8 +1237,12 @@ static ErrorOr<void> process_chunk(Streamer& streamer, PNGLoadingContext& contex
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}
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dbgln_if(PNG_DEBUG, "Chunk type: '{}', size: {}, crc: {:x}", chunk_type, chunk_size, chunk_crc);
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if (chunk_type == "IHDR"sv)
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if (chunk_type == "IHDR"sv) {
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if (context.state >= PNGLoadingContext::IHDRDecoded)
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return Error::from_string_literal("Multiple IHDR chunks");
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return process_IHDR(chunk_data, context);
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}
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if (context.state < PNGLoadingContext::IHDRDecoded)
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return Error::from_string_literal("IHDR is not the first chunk of the file");
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