Fix buffer overrun #2779

2 years ago · 2880d721c7
1 changed files with 1 additions and 1 deletions
--- a/src/ImageSharp/Image.WrapMemory.cs
+++ b/src/ImageSharp/Image.WrapMemory.cs
@ -425,7 +425,7 @@ public abstract partial class Image

        UnmanagedMemoryManager<TPixel> memoryManager = new(pointer, width * height);

-        Guard.MustBeGreaterThanOrEqualTo(bufferSizeInBytes, memoryManager.Memory.Span.Length, nameof(bufferSizeInBytes));
+        Guard.MustBeGreaterThanOrEqualTo(bufferSizeInBytes / sizeof(TPixel), memoryManager.Memory.Span.Length, nameof(bufferSizeInBytes));

        MemoryGroup<TPixel> memorySource = MemoryGroup<TPixel>.Wrap(memoryManager.Memory);
        return new Image<TPixel>(configuration, memorySource, width, height, metadata);