California Code, Probate Code - PROB § 19402

(a) In any action under this chapter, subject to Section 366.2 of the Code of Civil Procedure, the distributee may assert any defenses, cross-complaints, or setoffs that would have been available to the deceased settlor if the settlor had not died.

(b) Personal liability under this chapter is applicable only to the extent the claim of the creditor cannot be satisfied out of the trust estate of the deceased settlor and is limited to a pro rata portion of the claim of the creditor, based on the proportion that the value of the property distributed to the person out of the trust estate bears to the total value of all property distributed to all persons out of the trust estate. Personal liability under this chapter for all claims of all creditors shall not exceed the value of the property distributed to the person out of the trust estate. As used in this chapter, the value of the property is the fair market value of the property on the date of its distribution, less the amount of any liens and encumbrances on the property at that time.