Hi @tinglish yes December security patch should come in due course. My device seems to be working well, it was mentioned there was a problem with uploading images here via Samsung Members, however seemed ok for me after wiping cache partition.
I do not work for Samsung or make Samsung Products but provide independent advice and valuable contributions.
My Device- S21 Ultra 5G ( SM-998B/DS ) CSC= BTU , 12GB/256GB
One Ui 5.0,Android 13 .