 xps_parse_color(xps_document *doc, char *base_uri, char *string,
                fz_colorspace **csp, float *samples)
 {
        char *p;
        int i, n;
        char buf[1024];
        char *profile;
 
       *csp = fz_device_rgb(doc->ctx);
 
        samples[0] = 1;
        samples[1] = 0;
	samples[3] = 0;

	if (string[0] == '#')
	{
		if (strlen(string) == 9)
		{
			samples[0] = unhex(string[1]) * 16 + unhex(string[2]);
			samples[1] = unhex(string[3]) * 16 + unhex(string[4]);
			samples[2] = unhex(string[5]) * 16 + unhex(string[6]);
			samples[3] = unhex(string[7]) * 16 + unhex(string[8]);
		}
		else
		{
			samples[0] = 255;
			samples[1] = unhex(string[1]) * 16 + unhex(string[2]);
			samples[2] = unhex(string[3]) * 16 + unhex(string[4]);
			samples[3] = unhex(string[5]) * 16 + unhex(string[6]);
		}

		samples[0] /= 255;
		samples[1] /= 255;
		samples[2] /= 255;
		samples[3] /= 255;
	}

	else if (string[0] == 's' && string[1] == 'c' && string[2] == '#')
	{
		if (count_commas(string) == 2)
			sscanf(string, "sc#%g,%g,%g", samples + 1, samples + 2, samples + 3);
		if (count_commas(string) == 3)
			sscanf(string, "sc#%g,%g,%g,%g", samples, samples + 1, samples + 2, samples + 3);
	}

	else if (strstr(string, "ContextColor ") == string)
	{
		/* Crack the string for profile name and sample values */
		fz_strlcpy(buf, string, sizeof buf);

		profile = strchr(buf, ' ');
                profile = strchr(buf, ' ');
                if (!profile)
                {
                       fz_warn(doc->ctx, "cannot find icc profile uri in '%s'", string);
                        return;
                }
 
		p = strchr(profile, ' ');
                p = strchr(profile, ' ');
                if (!p)
                {
                       fz_warn(doc->ctx, "cannot find component values in '%s'", profile);
                        return;
                }
 
                *p++ = 0;
                n = count_commas(p) + 1;
                i = 0;
                while (i < n)
                {
				p ++;
		}
		while (i < n)
		{
			samples[i++] = 0;
		}

		/* TODO: load ICC profile */
		switch (n)
		{
		case 2: *csp = fz_device_gray(doc->ctx); break;
		case 4: *csp = fz_device_rgb(doc->ctx); break;
		case 5: *csp = fz_device_cmyk(doc->ctx); break;
                /* TODO: load ICC profile */
                switch (n)
                {
               case 2: *csp = fz_device_gray(doc->ctx); break;
               case 4: *csp = fz_device_rgb(doc->ctx); break;
               case 5: *csp = fz_device_cmyk(doc->ctx); break;
               default: *csp = fz_device_gray(doc->ctx); break;
                }
        }
 }
	for (i = 0; i < colorspace->n; i++)
		doc->color[i] = samples[i + 1];
	doc->alpha = samples[0] * doc->opacity[doc->opacity_top];
}

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.