static u32 alpha(struct illinois *ca, u32 da, u32 dm)
{
	u32 d1 = dm / 100;	/* Low threshold */

	if (da <= d1) {
		/* If never got out of low delay zone, then use max */
		if (!ca->rtt_above)
			return ALPHA_MAX;

		/* Wait for 5 good RTT's before allowing alpha to go alpha max.
		 * This prevents one good RTT from causing sudden window increase.
		 */
		if (++ca->rtt_low < theta)
			return ca->alpha;

		ca->rtt_low = 0;
		ca->rtt_above = 0;
		return ALPHA_MAX;
	}

	ca->rtt_above = 1;

	/*
	 * Based on:
	 *
	 *      (dm - d1) amin amax
	 * k1 = -------------------
	 *         amax - amin
	 *
	 *       (dm - d1) amin
	 * k2 = ----------------  - d1
	 *        amax - amin
	 *
	 *             k1
	 * alpha = ----------
	 *          k2 + da
	 */

	dm -= d1;
	da -= d1;
	return (dm * ALPHA_MAX) /
		(dm + (da  * (ALPHA_MAX - ALPHA_MIN)) / ALPHA_MIN);
}

This weakness involves numeric computation errors, such as integer overflows, underflows, or precision losses, which can lead to miscalculations and exploitable behaviors in software.