Been awhile since I was a Muslim but are there any ahadith that support stoning and lashing for infidelity?
Last that I recall there aren't any floggings for it nor is there stoning.
'Ubada b. as-Samit reported that whenever Allah's Apostle (may peace be upon him) received revelation, he felt its rigour and the complexion of his face changed. One day revelation descended upon him, he felt the same rigour. When it was over and he felt relief, he said:
Take from me. Verily Allah has ordained a way for them (the women who commit fornication),: (When) a married man (commits adultery) with a married woman, and an unmarried male with an unmarried woman, then in case of married (persons) there is (a punishment) of one hundred lashes and then stoning (to death). And in case of unmarried persons, (the punishment) is one hundred lashes and exile for one year.
Sahih Muslim Book 29, Hadith 19
Narrated 'Ubadah bin As-Samit:
"The Messenger of Allah (may peace be upon him) said: 'Take from me. For Allah has a way made for them : For the married person who commits adultery with a married person is one hundred lashes, then stoning. And for the virgin who commits adultery with a virgin is one hundred lashes and banishment for a year."
Jami` at-Tirmidhi 1434 Sahih
Ubadah b. al-Samit reported the Messenger of Allah(may peace be upon him) as sayings:
Receive my teachings, receive my teachings. Allah has appointed a way for those women. If the parties have been married, they shall receive a hundred lashes and stoned to death. If the parties are unmarried, they shall receive a hundred lashes and banished for a year.
Sunan Abi Dawud 4415 Sahih
And there are more