cannot mount due to "size overflow"

[fluca1978]

cryfs version 0.10.2 running on Ubuntu 23.04 thru KDE Valut.

Today my encrypted folder was unable to be unlocked by the vault application. I've tried to manually mount it on the command line, and cryfs complains about size overflow:

% cryfs ~/.local/share/plasma-vault/git.enc ~/tmp/mount                               
CryFS Version 0.10.2

Password: 
Deriving encryption key (this can take some time)...done
[2023-10-06 10:23:55.861] [Log] [error] Crashed: Deserialization failed - size overflow

% cryfs --version
CryFS Version 0.10.2

% du -hs ~/.local/share/plasma-vault/git.enc
4,5G    /home/luca/.local/share/plasma-vault/git.enc

I'm not aware of any update at the operating system level, however I've tried to update and still does not work.
I have backups, therefore I can experiment on this encrypted folder.

I've tried:

% cryfs --allow-filesystem-upgrade --allow-integrity-violations  ~/.local/share/plasma-vault/git.enc ~/tmp/mount   
CryFS Version 0.10.2

Password: 
Deriving encryption key (this can take some time)...done
[2023-10-06 10:25:49.696] [Log] [error] Crashed: Deserialization failed - size overflow

It worked fine as of yesterday.
In the case it is helpful, the following is the KDE vaul configuration file:

% cat ~/.config/plasmavaultrc                          
[/home/luca/.local/share/plasma-vault/git.enc]
activities=
backend=cryfs
lastError=
lastStatus=
mountPoint=/home/luca/git
name=git
offlineOnly=false


[EncryptedDevices]
/home/luca/.local/share/plasma-vault/git.enc=true

[UI-notice]
SkipNotice-cryfs-message=false

[jnm]

In case it helps, I worked around Crashed: Deserialization failed - size overflow by removing (well, renaming) the directory ~/.local/share/cryfs/ as mentioned on #292.

I did not need to touch anything in ~/.local/share/plasma-vault/.

[X-m7]

Just got hit by this issue as well, with CryFS 0.11.4 on Arch Linux, also through KDE Plasma Vaults, and renaming ~/.local/share/cryfs also got around the issue for me.

[knot126]

Also just got the same issue, running Manjaro, CryFS 0.11.4. Solved by removing ~/.local/share/cryfs.