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Showing content from https://github.com/SixLabors/ImageSharp/issues/824 below:

Image.Load throws IndexOutOfRangeException · Issue #824 · SixLabors/ImageSharp · GitHub

Prerequisites

I have written a descriptive issue title
I have verified that I am running the latest version of ImageSharp
I have verified if the problem exist in both DEBUG and RELEASE mode
I have searched open and closed issues to ensure it has not already been reported

Description

Image.Load throws IndexOutOfRangeException when loading malformed JPG file.

Steps to Reproduce

Run the following code snippet with the path variable containing the path to one of the files from the attached archive:

There are eight different stack traces in total for this exception type, which is why I bundled them together in a single issue (also, I'm not sure which one of these might be the part of the same issue, because some stack traces look quite similar). Here are all the stack traces:

Image 1

System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at SixLabors.ImageSharp.Formats.Jpeg.JpegDecoderCore.ProcessDefineQuantizationTablesMarker(Int32 remaining)
   at SixLabors.ImageSharp.Formats.Jpeg.JpegDecoderCore.ParseStream(Stream stream, Boolean metadataOnly)
   at SixLabors.ImageSharp.Formats.Jpeg.JpegDecoderCore.Decode[TPixel](Stream stream)
   at SixLabors.ImageSharp.Formats.Jpeg.JpegDecoder.Decode[TPixel](Configuration configuration, Stream stream)
   at SixLabors.ImageSharp.Image.Decode[TPixel](Stream stream, Configuration config)
   at SixLabors.ImageSharp.Image.WithSeekableStream[T](Configuration config, Stream stream, Func`2 action)
   at SixLabors.ImageSharp.Image.Load[TPixel](Configuration config, Stream stream, IImageFormat& format)
   at SixLabors.ImageSharp.Image.Load[TPixel](Configuration config, Byte[] data)

Image 2

System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at SixLabors.ImageSharp.Formats.Jpeg.JpegDecoderCore.ProcessDefineHuffmanTablesMarker(Int32 remaining)
   at SixLabors.ImageSharp.Formats.Jpeg.JpegDecoderCore.ParseStream(Stream stream, Boolean metadataOnly)
   at SixLabors.ImageSharp.Formats.Jpeg.JpegDecoderCore.Decode[TPixel](Stream stream)
   at SixLabors.ImageSharp.Formats.Jpeg.JpegDecoder.Decode[TPixel](Configuration configuration, Stream stream)
   at SixLabors.ImageSharp.Image.Decode[TPixel](Stream stream, Configuration config)
   at SixLabors.ImageSharp.Image.WithSeekableStream[T](Configuration config, Stream stream, Func`2 action)
   at SixLabors.ImageSharp.Image.Load[TPixel](Configuration config, Stream stream, IImageFormat& format)
   at SixLabors.ImageSharp.Image.Load[TPixel](Configuration config, Byte[] data)

Image 3

System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder.ScanDecoder.ParseBaselineDataInterleaved()
   at SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder.ScanDecoder.ParseEntropyCodedData()
   at SixLabors.ImageSharp.Formats.Jpeg.JpegDecoderCore.ParseStream(Stream stream, Boolean metadataOnly)
   at SixLabors.ImageSharp.Formats.Jpeg.JpegDecoderCore.Decode[TPixel](Stream stream)
   at SixLabors.ImageSharp.Formats.Jpeg.JpegDecoder.Decode[TPixel](Configuration configuration, Stream stream)
   at SixLabors.ImageSharp.Image.Decode[TPixel](Stream stream, Configuration config)
   at SixLabors.ImageSharp.Image.WithSeekableStream[T](Configuration config, Stream stream, Func`2 action)
   at SixLabors.ImageSharp.Image.Load[TPixel](Configuration config, Stream stream, IImageFormat& format)
   at SixLabors.ImageSharp.Image.Load[TPixel](Configuration config, Byte[] data)

Image 4

System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder.JpegBlockPostProcessor..ctor(IRawJpegData decoder, IJpegComponent component)
   at SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder.JpegComponentPostProcessor.CopyBlocksToColorBuffer()
   at SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder.JpegImagePostProcessor.DoPostProcessorStep[TPixel](ImageFrame`1 destination)
   at SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder.JpegImagePostProcessor.PostProcess[TPixel](ImageFrame`1 destination)
   at SixLabors.ImageSharp.Formats.Jpeg.JpegDecoderCore.PostProcessIntoImage[TPixel]()
   at SixLabors.ImageSharp.Formats.Jpeg.JpegDecoder.Decode[TPixel](Configuration configuration, Stream stream)
   at SixLabors.ImageSharp.Image.Decode[TPixel](Stream stream, Configuration config)
   at SixLabors.ImageSharp.Image.WithSeekableStream[T](Configuration config, Stream stream, Func`2 action)
   at SixLabors.ImageSharp.Image.Load[TPixel](Configuration config, Stream stream, IImageFormat& format)
   at SixLabors.ImageSharp.Image.Load[TPixel](Configuration config, Byte[] data)

Image 5

System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder.ScanDecoder.DecodeBlockBaseline(JpegComponent component, Block8x8& block, HuffmanTable& dcTable, HuffmanTable& acTable, Int16& fastACRef)
   at SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder.ScanDecoder.ParseBaselineDataInterleaved()
   at SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder.ScanDecoder.ParseEntropyCodedData()
   at SixLabors.ImageSharp.Formats.Jpeg.JpegDecoderCore.ParseStream(Stream stream, Boolean metadataOnly)
   at SixLabors.ImageSharp.Formats.Jpeg.JpegDecoderCore.Decode[TPixel](Stream stream)
   at SixLabors.ImageSharp.Formats.Jpeg.JpegDecoder.Decode[TPixel](Configuration configuration, Stream stream)
   at SixLabors.ImageSharp.Image.Decode[TPixel](Stream stream, Configuration config)
   at SixLabors.ImageSharp.Image.WithSeekableStream[T](Configuration config, Stream stream, Func`2 action)
   at SixLabors.ImageSharp.Image.Load[TPixel](Configuration config, Stream stream, IImageFormat& format)
   at SixLabors.ImageSharp.Image.Load[TPixel](Configuration config, Byte[] data)

Image 6

System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at SixLabors.ImageSharp.Formats.Jpeg.Components.Block8x8F.CopyArbitraryScale(BufferArea`1 area, Int32 horizontalScale, Int32 verticalScale)
   at SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder.JpegBlockPostProcessor.ProcessBlockColorsInto(Block8x8& sourceBlock, BufferArea`1& destArea, Single maximumValue)
   at SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder.JpegComponentPostProcessor.CopyBlocksToColorBuffer()
   at SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder.JpegImagePostProcessor.DoPostProcessorStep[TPixel](ImageFrame`1 destination)
   at SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder.JpegImagePostProcessor.PostProcess[TPixel](ImageFrame`1 destination)
   at SixLabors.ImageSharp.Formats.Jpeg.JpegDecoderCore.PostProcessIntoImage[TPixel]()
   at SixLabors.ImageSharp.Formats.Jpeg.JpegDecoder.Decode[TPixel](Configuration configuration, Stream stream)
   at SixLabors.ImageSharp.Image.Decode[TPixel](Stream stream, Configuration config)
   at SixLabors.ImageSharp.Image.WithSeekableStream[T](Configuration config, Stream stream, Func`2 action)
   at SixLabors.ImageSharp.Image.Load[TPixel](Configuration config, Stream stream, IImageFormat& format)
   at SixLabors.ImageSharp.Image.Load[TPixel](Configuration config, Byte[] data)

Image 7

System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder.ScanDecoder.DecodeBlockProgressiveDC(JpegComponent component, Block8x8& block, HuffmanTable& dcTable)
   at SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder.ScanDecoder.ParseProgressiveDataInterleaved()
   at SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder.ScanDecoder.ParseEntropyCodedData()
   at SixLabors.ImageSharp.Formats.Jpeg.JpegDecoderCore.ParseStream(Stream stream, Boolean metadataOnly)
   at SixLabors.ImageSharp.Formats.Jpeg.JpegDecoderCore.Decode[TPixel](Stream stream)
   at SixLabors.ImageSharp.Formats.Jpeg.JpegDecoder.Decode[TPixel](Configuration configuration, Stream stream)
   at SixLabors.ImageSharp.Image.Decode[TPixel](Stream stream, Configuration config)
   at SixLabors.ImageSharp.Image.WithSeekableStream[T](Configuration config, Stream stream, Func`2 action)
   at SixLabors.ImageSharp.Image.Load[TPixel](Configuration config, Stream stream, IImageFormat& format)
   at SixLabors.ImageSharp.Image.Load[TPixel](Configuration config, Byte[] data)

Image 8

System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder.ScanDecoder.ParseProgressiveDataInterleaved()
   at SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder.ScanDecoder.ParseEntropyCodedData()
   at SixLabors.ImageSharp.Formats.Jpeg.JpegDecoderCore.ParseStream(Stream stream, Boolean metadataOnly)
   at SixLabors.ImageSharp.Formats.Jpeg.JpegDecoderCore.Decode[TPixel](Stream stream)
   at SixLabors.ImageSharp.Formats.Jpeg.JpegDecoder.Decode[TPixel](Configuration configuration, Stream stream)
   at SixLabors.ImageSharp.Image.Decode[TPixel](Stream stream, Configuration config)
   at SixLabors.ImageSharp.Image.WithSeekableStream[T](Configuration config, Stream stream, Func`2 action)
   at SixLabors.ImageSharp.Image.Load[TPixel](Configuration config, Stream stream, IImageFormat& format)
   at SixLabors.ImageSharp.Image.Load[TPixel](Configuration config, Byte[] data)

System Configuration

ImageSharp version: Beta 6
Environment (Operating system, version and so on): Windows 10 Pro 1803
.NET Framework version: .NET Core 2.2.102

Found via SharpFuzz.

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