ext4 corruption bug in Linux kernel 6.1.64-1 that was in last night's debian point release
Avoid booting into 6.1.64-1, if you have already done so the suggestion is to boot to a previous kernel, 6.1.55-1 or earlier
debian 12.3 release has been delayed. Thanks to those who are working to update the kernel for the release!
Bug report - https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1057843
"IMPORTANT: do NOT upgrade to new stable point release" on debian-user mailing list