Evaluate return value of stream.Read() to make sure enough data was read

src/ImageSharp/Formats/Exr/Compression/Decompressors/NoneExrCompression.cs

@@ -15,7 +15,13 @@ internal class NoneExrCompression : ExrBaseDecompressor
 
     /// <inheritdoc/>
     public override void Decompress(BufferedReadStream stream, uint compressedBytes, Span<byte> buffer)
-        => stream.Read(buffer, 0, Math.Min(buffer.Length, (int)this.BytesPerBlock));
+    {
+        int bytesRead = stream.Read(buffer, 0, Math.Min(buffer.Length, (int)this.BytesPerBlock));
+        if (bytesRead != (int)this.BytesPerBlock)
+        {
+            ExrThrowHelper.ThrowInvalidImageContentException("Could not read enough pixel data!");
+        }
+    }
 
     /// <inheritdoc/>
     protected override void Dispose(bool disposing)

src/ImageSharp/Formats/Exr/ExrDecoderCore.cs

@@ -454,13 +454,18 @@ internal sealed class ExrDecoderCore : ImageDecoderCore
 
         // Next three bytes contain info's about the image.
         byte flagsByte0 = (byte)stream.ReadByte();
-        stream.ReadByte();
-        stream.ReadByte();
         if ((flagsByte0 & (1 << 1)) != 0)
         {
             ExrThrowHelper.ThrowNotSupported("Decoding tiled exr images is not supported yet!");
         }
 
+        // Discard the next two bytes.
+        int bytesRead = stream.Read(this.buffer, 0, 2);
+        if (bytesRead != 2)
+        {
+            ExrThrowHelper.ThrowInvalidImageContentException("Could not read enough data for exr file!");
+        }
+
         this.HeaderAttributes = this.ParseHeaderAttributes(stream);
 
         this.Width = this.HeaderAttributes.DataWindow.XMax - this.HeaderAttributes.DataWindow.XMin + 1;
@@ -632,7 +637,10 @@ internal sealed class ExrDecoderCore : ImageDecoderCore
         }
 
         // Last byte should be a null byte.
-        stream.ReadByte();
+        if (stream.ReadByte() == -1)
+        {
+            ExrThrowHelper.ThrowInvalidImageContentException("Could not read enough data to read exr channel list!");
+        }
 
         return channels;
     }
@@ -648,9 +656,11 @@ internal sealed class ExrDecoderCore : ImageDecoderCore
         byte pLinear = (byte)stream.ReadByte();
 
         // Next 3 bytes are reserved bytes and not use.
-        stream.ReadByte();
-        stream.ReadByte();
-        stream.ReadByte();
+        if (stream.Read(this.buffer, 0, 3) != 3)
+        {
+            ExrThrowHelper.ThrowInvalidImageContentException("Could not read enough data to read exr channel info!");
+        }
+
         bytesRead += 4;
 
         int xSampling = this.ReadSignedInteger(stream);

src/ImageSharp/IO/BufferedReadStream.cs

@@ -2,7 +2,6 @@
 // Licensed under the Six Labors Split License.
 
 using System.Buffers;
-using System.Buffers.Binary;
 using System.Runtime.CompilerServices;
 
 namespace SixLabors.ImageSharp.IO;