static TEE_Result parse_uuid(const char *s, TEE_UUID *uuid)
{
	TEE_Result res = TEE_SUCCESS;
	TEE_UUID u = { 0 };
	const char *p = s;
	size_t i;

	if (strlen(p) != 36)
		return TEE_ERROR_BAD_FORMAT;
	if (p[8] != '-' || p[13] != '-' || p[18] != '-' || p[23] != '-')
		return TEE_ERROR_BAD_FORMAT;

	u.timeLow = parse_hex(p, 8, &res);
	if (res)
		goto out;
	p += 9;
	u.timeMid = parse_hex(p, 4, &res);
	if (res)
		goto out;
	p += 5;
	u.timeHiAndVersion = parse_hex(p, 4, &res);
	if (res)
		goto out;
	p += 5;
	for (i = 0; i < 8; i++) {
		u.clockSeqAndNode[i] = parse_hex(p, 2, &res);
		if (res)
			goto out;
		if (i == 1)
			p += 3;
		else
			p += 2;
	}
	*uuid = u;
out:
	return res;
}

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