How to fix "failed: ciphertext verification failed" running 'restic 'prune'

We’ve had a report recently about a memory corruption issue on Linux 5.3.1:

The list of safe (fixed) kernel versions is roughly: 5.3.15+, 5.4.2+, or 5.5+

  • Which kernel do you run?
  • Can you run restic check --read-data?