ImageSharp: HistogramEqualization uses an unvalidated luminance as an unchecked histogram index

Summary SixLabors.ImageSharp can terminate a process when an application decodes an attacker-supplied 32-bit floating-point TIFF as Image and applies HistogramEqualization. An IEEE positive-infinity TIFF sample reaches a non-finite or otherwise out-of-range HalfVector4 component, depending on the...