int zgfx_decompress(ZGFX_CONTEXT* zgfx, const BYTE* pSrcData, UINT32 SrcSize, BYTE** ppDstData,
                    UINT32* pDstSize, UINT32 flags)
{
	int status = -1;
	BYTE descriptor;
	wStream* stream = Stream_New((BYTE*)pSrcData, SrcSize);

	if (!stream)
		return -1;

	if (Stream_GetRemainingLength(stream) < 1)
		goto fail;

	Stream_Read_UINT8(stream, descriptor); /* descriptor (1 byte) */

	if (descriptor == ZGFX_SEGMENTED_SINGLE)
	{
		if (!zgfx_decompress_segment(zgfx, stream, Stream_GetRemainingLength(stream)))
			goto fail;

		*ppDstData = NULL;

		if (zgfx->OutputCount > 0)
			*ppDstData = (BYTE*) malloc(zgfx->OutputCount);

		if (!*ppDstData)
			goto fail;

		*pDstSize = zgfx->OutputCount;
		CopyMemory(*ppDstData, zgfx->OutputBuffer, zgfx->OutputCount);
	}
	else if (descriptor == ZGFX_SEGMENTED_MULTIPART)
	{
		UINT32 segmentSize;
		UINT16 segmentNumber;
		UINT16 segmentCount;
		UINT32 uncompressedSize;
		BYTE* pConcatenated;
		size_t used = 0;

		if (Stream_GetRemainingLength(stream) < 6)
			goto fail;

		Stream_Read_UINT16(stream, segmentCount); /* segmentCount (2 bytes) */
		Stream_Read_UINT32(stream, uncompressedSize); /* uncompressedSize (4 bytes) */

		if (Stream_GetRemainingLength(stream) < segmentCount * sizeof(UINT32))
			goto fail;

		pConcatenated = (BYTE*) malloc(uncompressedSize);

		if (!pConcatenated)
			goto fail;

		*ppDstData = pConcatenated;
		*pDstSize = uncompressedSize;

		for (segmentNumber = 0; segmentNumber < segmentCount; segmentNumber++)
		{
			if (Stream_GetRemainingLength(stream) < sizeof(UINT32))
				goto fail;

			Stream_Read_UINT32(stream, segmentSize); /* segmentSize (4 bytes) */

			if (!zgfx_decompress_segment(zgfx, stream, segmentSize))
				goto fail;

			if (zgfx->OutputCount > UINT32_MAX - used)
				goto fail;

			if (used + zgfx->OutputCount > uncompressedSize)
				goto fail;

			CopyMemory(pConcatenated, zgfx->OutputBuffer, zgfx->OutputCount);
			pConcatenated += zgfx->OutputCount;
			used += zgfx->OutputCount;
		}
	}
	else
	{
		goto fail;
	}

	status = 1;
fail:
	Stream_Free(stream, FALSE);
	return status;
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.